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DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO Ph.D

DR ANTHONY MELVIN CRASTO, Born in Mumbai in 1964 and graduated from Mumbai University, Completed his Ph.D from ICT, 1991,Matunga, Mumbai, India, in Organic Chemistry, The thesis topic was Synthesis of Novel Pyrethroid Analogues, Currently he is working with AFRICURE PHARMA, ROW2TECH, NIPER-G, Department of Pharmaceuticals, Ministry of Chemicals and Fertilizers, Govt. of India as ADVISOR, earlier assignment was with GLENMARK LIFE SCIENCES LTD, as CONSUlTANT, Retired from GLENMARK in Jan2022 Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 32 plus yrs, Prior to joining Glenmark, he has worked with major multinationals like Hoechst Marion Roussel, now Sanofi, Searle India Ltd, now RPG lifesciences, etc. He has worked with notable scientists like Dr K Nagarajan, Dr Ralph Stapel, Prof S Seshadri, etc, He did custom synthesis for major multinationals in his career like BASF, Novartis, Sanofi, etc., He has worked in Discovery, Natural products, Bulk drugs, Generics, Intermediates, Fine chemicals, Neutraceuticals, GMP, Scaleups, etc, he is now helping millions, has 9 million plus hits on Google on all Organic chemistry websites. His friends call him Open superstar worlddrugtracker. His New Drug Approvals, Green Chemistry International, All about drugs, Eurekamoments, Organic spectroscopy international, etc in organic chemistry are some most read blogs He has hands on experience in initiation and developing novel routes for drug molecules and implementation them on commercial scale over a 32 PLUS year tenure till date Feb 2023, Around 35 plus products in his career. He has good knowledge of IPM, GMP, Regulatory aspects, he has several International patents published worldwide . He has good proficiency in Technology transfer, Spectroscopy, Stereochemistry, Synthesis, Polymorphism etc., He suffered a paralytic stroke/ Acute Transverse mylitis in Dec 2007 and is 90 %Paralysed, He is bound to a wheelchair, this seems to have injected feul in him to help chemists all around the world, he is more active than before and is pushing boundaries, He has 100 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 100 Lakh plus views on dozen plus blogs, 227 countries, 7 continents, He makes himself available to all, contact him on +91 9323115463, email amcrasto@gmail.com, Twitter, @amcrasto , He lives and will die for his family, 90% paralysis cannot kill his soul., Notably he has 38 lakh plus views on New Drug Approvals Blog in 227 countries......https://newdrugapprovals.wordpress.com/ , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc He has total of 32 International and Indian awards

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Muvadenant

November 8, 2025 2:50 am / Leave a comment


Muvadenant

CAS 2459881-03-7

MF C21H26N4O4S , 430.5 g/mol

(5S)-N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy[1,3]thiazolo[4,5-c]pyridin-2-yl]-7-oxa-2-azaspiro[4.5] decane-2-carboxamide

(5S)-N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1,3]thiazolo[4,5-c]pyridin-2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide
adenosine receptor antagonist, antineoplastic, 6LSF69F6A8, M1069 , M 1069 


Muvadenant is a small molecule drug. The usage of the INN stem ‘-adenant’ in the name indicates that Muvadenant is a adenosin receptor antagonist. Muvadenant has a monoisotopic molecular weight of 430.17 Da.

Adenosine is an ubiguitous modulator of numerous physiological activities, particularly within the cardiovascular, nervous and immune systems. Adenosine is related both structurally and metabolically to the bioactive nucleotides adenosine triphosphate (ATP), adenosine diphosphate (ADP), adenosine monophosphate (AMP) and cyclic adenosine monophosphate (cAMP), to the biochemical methylating agent S-adenosyl-L-methione (SAM) and structurally to the coenzymes NAD, FAD and coenzym A and to RNA.

Via cell surface receptors, adenosine modulates diverse physiological functions including induction of sedation, vasodilatation, suppression of cardiac rate and contractility, inhibition of platelet aggregability, stimulation of gluconeogenesis and inhibition of lipolysis. Studies show that adenosine is able to activate adenylate cyclases, open potassium channels, reduce flux through calcium channels, and inhibit or stimulate phosphoinositide turnover through receptor-mediated

mechanisms (Muller C. E. and Stein B., Current Pharmaceutical Design, 2: 501 , 1996; Muller C. E., Exp. Opin. Ther. Patents, 7(5): 419, 1997).

Adenosine receptors belong to the superfamily of G-protein-coupled receptors (GPCRs). Four major subtypes of adenosine receptors have been

pharmacologically, structurally and functionally characterized (Fredholm et al., Pharm. Rev., 46: 143-156, 1994) and referred to as A1, A2A, A2B and A3. Though the same adenosine receptor can couple to different G-proteins, adenosine A1 and A3 receptors usually couple to inhibitory G-proteins referred to as G, and Go which inhibit adenylate cyclase and down-regulate cellular cAMP levels. In contrast, the adenosine A2A and A2B receptors couple to stimulatory G-proteins referred to as Gs that activate adenylate cyclase and increase intracellular levels of cAMP (Linden J., Annu. Rev. Pharmacol. Toxicol., 41 : 775-87 2001).

PAT

PAT

 WO-2020152132

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2020152132&_cid=P10-MHPOEV-06540-1

1. (5R)-N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-thiazolo[4,5-c]pyridin- 2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide 24

and (5S)-N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-thiazolo[4,5- c]pyridin-2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide 25

a. 4-chloro-5-iodo-3-nitropyridin-2-ol

Into a 250-mL round-bottom flask was placed 4-chloro-3-nitropyridin-2-ol (10.0 g, 54.4 mmol, 95%), N-lod-succinimid (NIS, 14.2 g, 59.9 mmol, 95%) in acetonitrile (115 mL). The solution was stirred for 1 h overnight at 80°C in an oil bath. The mixture was concentrated and the precipitate formed collected by filtration. The residue was washed with twice with petrol ether (500 mL) dried under vacuum at 60°C overnight. This resulted in 4-chloro-5-iodo-3-nitropyridin-2-ol (16.5 g, 97.9%, 97% purity) as a yellow solid. MS: m/z = 300.9 [M+H]+.

b. 4-chloro-5-iodo-2-methoxy-3-nitropyridine

Into a 500-mL round-bottom flask was placed 4-chloro-5-iodo-3-nitropyridin-2-ol (16.5 g, 53.3 mmol, 97%), Ag2CO3 (15.5 g, 53.3 mmol, 95%) in toluene (310 mL). To this suspension CH3I (15.9 g, 107 mmol, 95%) was added at 50°C and the mixture was stirred at 80°C for 4 h. The precipitate was collected by filtration and discarded. The filtrate was evaporated to dryness under vacuum and the residue purified by silica gel chromatography with ethyl acetate/petroleum ether (15:85).

This resulted in 4-chloro-5-iodo-2-methoxy-3-nitropyridine (9.90 g, 52.6%, 89% purity) as a light yellow solid. MS: m/z = 315.5 [M+H]+.

c. 4-chloro-5-iodo-2-methoxypyridin-3-amine

Into a 250-mL 3-necked round-bottom flask was placed 4-chloro-5-iodo-2-methoxy-3-nitropyridine (9.90 g, 28.0 mmol, 89%), iron (16.5 g, 281 mmol, 95%) and NH 4C (9.40 g, 174 mmol, 99%) in ethanol (152 mL) and water (30 mL). The mixture was stirred for 2 h at 80°C in an oil bath. The reaction mixture was filtered over Celite, washed with ethanol and the mother liquor was concentrated to dryness. The residue was stirred for 30 min. with 100 ml water at 60°dried in vacuo. This resulted in 4-chloro-5-iodo-2-methoxypyridin-3-amine (7.20 g, 75%, 83% purity) as an off-white solid. It was used without further purification in the next step. MS: m/z = 285.9 [M+H]+.

d. N-[7-iodo-4-methoxy-[1,3]thiazolo[4,5-c]pyridin-2-yl]benzamide

Into a 500-mL round-bottom flask was placed 4-chloro-5-iodo-2-methoxypyridin-3-amine (7.20 g, 21.0 mmol, 83%) in acetone (150 mL) and benzoyl isothiocyanate (5.21 g, 31.5 mmol, 99%) was added dropwise at room temperature. The solution was stirred for 1 h at 50 °C in an oil bath. The solids were collected by filtration, washed with acetone and dried in vacuo to give N-[7-iodo-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]benzamide (8.73 g, 91 %, 90% purity) as a white solid. MS: m/z = 412.2 [M+H]+.

e. N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1,3]thiazolo[4,5-c]pyridin- 2-yl]benzamide

To a solution of N-[7-iodo-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]benzamide (6.00 g, 13.1 mmol, 90%) and 2-(3,6-dihydro-2H-pyran-4-yl)-4,4,5,5-tetramethyl-1 ,3,2-dioxaborolane (6.13 g, 27.7 mmol, 95%) in dioxane (200 mL) and water (40.00 mL) were added NaOH (2.90 g, 68.9 mmol, 95%) and Pd(dppf)Cl2* dichloromethane (1.20 g, 1.40 mmol, 95%). After stirring for 1 h at 100°C under a nitrogen atmosphere, the mixture was concentrated to dryness under vacuo. The residue was purified by silica gel chromatography with ethyl acetate/hexane (95:5). This resulted in 3.32 g (62%, 90% purity) of N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]benzamide as colorless solid. MS: m/z = 368.1 [M+H]+.

f. 7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1,3]thiazolo[4,5-c]pyridin-2- amine

To a stirred mixture of N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]benzamide (3.27 g, 8.00 mmol, 90%) in water/methanol (1 :1 , 300 mL) was added NaOH (3.36 g, 80.0 mmol, 95%) at room temperature under nitrogen atmosphere. The mixture was stirred for overnight at 90°C under nitrogen atmosphere and evaporated to dryness. The residue was taken up in water and extracted 3 times with dichloromethane (100 mL). The combined organic layers were dried over anhydrous Na2SO4, filtered and evaporated to dryness. The residue was purified by silica gel column chromatography, eluted with petrol ether/ethyl acetate (1 :1) to afford 7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-amine (1.50 g, 68%, 96% purity) as a light brownish solid. MS: m/z = 264.1 [M+H]+.

g. phenyl N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy- [1,3]thiazolo[4,5c]pyridin-2-yl]-N-(phenoxycarbonyl)carbamate

To a stirred solution of 7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-amine (600 mg, 2.19 mmol, 96%) and phenyl chloroformate (1.81 g,

11.0 mmol, 95%) in THF (50 mL) was added K2CO3 (1.59 g, 11.0 mmol, 95%) and pyridine (913 mg, 11.0 mmol, 95%) at room temperature under nitrogen

atmosphere. The mixture was stirred for 6 h at 50° and then after re-cooling to room temperature quenched by the addition of water (300 mL). The mixture was extracted 3 times with dichloromethane (200 mL), the combined organic layers were washed once with brine (200 mL), dried over anhydrous Na2SO4, filtered, and evaporated to dryness under reduced pressure. This resulted in phenyl N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]-N-(phenoxycarbonyl)carbamate (1.00 g, 69%, 76% purity) as a light yellow solid. The crude product was used in the next step directly without further purification. MS: m/z = 504.1 [M+H]+.

h. N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1,3]thiazolo[4,5-c]pyridin- 2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide

To a mixture of phenyl N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]-N-(phenoxycarbonyl)carbamate (1.00 g, 1.52 mmol, 76.) and bis(7-oxa-2-azaspiro[4.5]decane), oxalic acid (1.19 g, 3.03 mmol, 95%) in THF (50 mL) was added diisopropylethyl amine (1.24 g, 9.09 mmol, 95%) at room temperature under nitrogen atmosphere. The mixture was stirred for 1 h at 60°. After re-cooling to room temperature, the mixture was extracted twice with dichloromethane (100 mL). The combined organic layers were dried over anhydrous Na2SO4, filtered and evaporated to dryness. The residue was purified by silica gel column chromatography, eluted with petrol ether/ethyl acetate (1 :1) to afford N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide (600 mg, 92%) as a white solid. HPLC: 99.9 % purity, RT = 1.17 min. MS: m/z = 431.1 [M+H]+. 1 H NMR (300 MHz, DMSO-d6) d 1 1.37 (s, 1 H), 7.95 (s, 1 H), 6.25 (s, 1 H), 4.30-4.29 (m, 2H), 3.99 (s, 3H), 3.89 (t, J=5.4Hz, 2H), 3.61-3.29 (m, 8H), 2.55-2.51 (m, 2H), 1.82-1.54 (m, 6H).

i. (5R)-N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-thiazolo[4,5-c]pyridin- 2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide 24

and (5S)-N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-thiazolo[4,5- c]pyridin-2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide 25

N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide (450 mg, 1.044 mmol, 1 equiv, 99.9%) was purified by chiral-preparative HPLC (Preparative HPLC-032, column: ChiralPak IA, 2*25cm, 5 mm; mobile phase, dichloromethane:ethanol (20:80); detector, UV). This resulted in (5R)-N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide (178 mg, 39%) as a white solid. HPLC: 99.7 % purity, RT (chiral) = 3.86 min, 100% ee. MS: m/z = 431.2 [M+H]+. 1 H NMR (400 MHz, DMSO-d6) d 1 1.36 (s, 1 H), 7.94 (s, 1 H), 6.24 (s, 1 H), 4.29-4.27 (m, 2H), 3.97 (s,3H), 3.88 (t, J=5.2 Hz, 2H), 3.51-3.19 (m, 8H), 2.55-2.50 (m, 2H), 1.83-1.53 (m, 6H) and (5S)-N-[7-(3,6-dihydro-2H-pyran-4-yl)-4-methoxy-[1 ,3]thiazolo[4,5-c]pyridin-2-yl]-7-oxa-2-azaspiro[4.5]decane-2-carboxamide (171 mg, 38%) as a white solid. HPLC: 99.8 % purity, RT (chiral) = 5.23 min, 99.9% ee. MS: m/z = 431.2 [M+H]+. 1 H NMR (400 MHz, DMSO-d6) d 1 1.35 (s, 1 H), 7.94 (s, 1 H), 6.24 (s, 1 H), 4.29-4.28 (m, 2H), 3.99 (s, 3H), 3.88-3.85 (m, 2H), 3.61-3.29 (m, 8H), 2.55-2.50 (m,2H), 1.83-1.53 (m,6H).

PAT

WO-2024028273-A1

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2024028273&_cid=P10-MHPOFP-06905-1

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//////////muvadenant, adenosine receptor antagonist, antineoplastic, 6LSF69F6A8, M1069 , M 1069 

Matsupexole

November 7, 2025 2:47 am / Leave a comment


Matsupexole

CAS 1399442-97-7

MF C22H34N6O2S, Molecular Weight, 446.61

(4aR,6R,8aR)-2-amino-3-cyano-N-{[2-(dimethylamino)ethyl]carbamoyl}-8-methyl-N-propyl 4,4a,5,6,7,8,8a,9-octahydrothieno[3,2-g]quinoline-6-carboxamide

(4aR,6R,8aR)-2-amino-3-cyano-N-[2-(dimethylamino)ethylcarbamoyl]-8-methyl-N-propyl-4a,5,6,7,8a,9-hexahydro-4H-thieno[3,2-g]quinoline-6-carboxamide
dopamine receptor agonist, Phase 2, Parkinson’s disease, K4UEG65HTX

  • OriginatorKissei Pharmaceutical
  • DeveloperAffaMed Therapeutics; Kissei Pharmaceutical
  • ClassAmides; Amines; Antiparkinsonians; Dimethylamines; Ethylenediamines; Nitriles; Quinolines; Small molecules; Thiophenes; Urea compounds
  • Mechanism of ActionDopamine receptor agonists
  • Phase IIParkinson’s disease
  • 28 Aug 2025Chemical structure information added.
  • 06 Sep 2021Kissei Pharmaceutical completes a phase II trial in Parkinson’s disease (In adults, In elderly) in Japan (PO) (NCT04867551)
  • 04 Aug 2021Phase-II clinical trials in Parkinson’s disease in China (PO) (Kissei Pharmaceutical pipeline, August 2021)

PAT

SYN

WO-2022009815-A1

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2022009815&_cid=P22-MHO952-66657-1

[0018]Example 11-{[(4aR,6R,8aR)-2-amino-3-cyano-8-methyl-4,4a,5,6,7,8,8a,9-octahydrothieno[3,2-g]quinolin-6-yl]carbonyl}-3-[2-(dimethylamino)ethyl]-1-propylurea sesquisuccinate monohydrate (Form I crystals of salt (A-1)) 102.8 g of acetone was　added to 1-{[(4aR,6R,8aR)-2-amino-3-cyano-8-methyl-4,4a,5,6,7,8,8a,9-octahydrothieno[3,2-g]quinolin-6-yl]carbonyl}-3-[2-(dimethylamino)ethyl]-1-propylurea (22.00 g), the mixture was suspended, and the suspension was heated and stirred at an external temperature of 52°C to dissolve the suspension. Activated carbon (2.2 g) was added to this solution and stirred for 10 minutes. This suspension was hot filtered and washed with 35.2 g of acetone. 220.0 g of acetone was then added, and the reaction solution was heated to an external temperature of 52°C and stirred. Next, 44.0 g of water was added to the reaction solution. Separately, 8.73 g of succinic acid was dissolved in a mixed solution of 156.1 g of acetone and 19.8 g of water. This succinic acid solution was added dropwise to the reaction solution over approximately 10 minutes. The dropping funnel was washed with a mixed solution of 17.4 g of acetone and 2.2 g of water and then added dropwise to the reaction solution. The reaction solution was stirred at an internal temperature of 50°C for 1 hour and cooled to 15°C over 30 minutes. The reaction solution was stirred at an external temperature of 10°C for 2 hours, and the crystals were collected by filtration. The crystals were washed twice with 52.8 g of acetone. The obtained wet crystals were dried under reduced pressure at 50°C for 37 hours and then returned to room temperature under reduced pressure over 3 hours. The crystals were stored under air for 24 hours to obtain crystals (27.75 g) of the title compound.

1 H-NMR (DMSO-d6) (δ (ppm)): 0.85 (3H, t, J = 7.4Hz), 1.32 (1H, ddd, J=12.2Hz, 12.2Hz, 12.2Hz), 1.42-1.57 (2H, m), 1.57-1.70 (1H, m ), 1.89-2.00 (2H, m), 2.20-2.13 (1H, m), 2.13-2.28 (2H, m), 2.21 (3H, s), 2.24 (6H, s ), 2.35-2.48 (1H, m), 2.40 (6H, s), 2.46 (2H, t, J = 6.4Hz), 2.81-2.96 (2H, m), 3.00-3 .12 (1H, m), 3.21-3.33 (2H, m), 3.47-3.66 (2H, m), 6.99 (2H, s), 8.50-8.90 (1H, br).

SYN

WO-2012124649-A1

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2012124649&_cid=P22-MHO8UB-55660-1

[0422]Example 1-11-{[(4aR,6R,8aR)-2-amino-3-cyano-8-methyl-4H,4aH,5H,6H,7H,8H,8aH,9H-thieno[3,2-g]quinolin-6-yl]carbonyl}-3-[2-(dimethylamino)ethyl]-1-propylurea (Compound 1-1) To a mixture of　1-{[(3R,4aR,8aR)-1-methyl-6-oxodecahydroquinolin-3-yl]carbonyl}-3-[2-(dimethylamino)ethyl]-1-propylurea (Reference Example 10-1) (1.602 g) and ethanol (44 mL) were added malononitrile (435 mg), morpholine (0.572 mL), and then elemental sulfur (282 mg) with stirring at room temperature, and the mixture was heated to 55°C and stirred for 1.5 hours. After cooling to room temperature, the reaction mixture was concentrated under reduced pressure, and the residue was purified by column chromatography on aminopropyl silica gel (eluent: 0%-5% methanol/ethyl acetate, gradient elution) to give the title compound (1.479 g) as a solid.

1 H-NMR (CDCl 

3 ) δ ppm: 0.94(3H, t, J=7.4Hz), 1.45-1.85(4H, m), 1.95-2.15(2H, m), 2.15-2.30(7H, m), 2.30-2.55(7H, m), 2.60-2.75(1H, m), 2.90-3.00(2H, m), 3.00-3.10(1H, m), 3.35-3.45(2H, m), 3.60-3.85(2H, m), 4.65(2H, s), 9.27(1H, br)[α] 

D 29 =-105.54°(c=0.30, MeOH)

[0311]Reference Example 10-11-{[(3R,4aR,8aR)-1-methyl-6-oxodecahydroquinolin-3-yl]carbonyl}-3-[2-(dimethylamino)ethyl]-1-propylurea　1-{[(3’R,4’aR,8’aR)-1′-methyloctahydro-1’H-spiro[1,3-dioxolane-2,6′-quinoline]-3′-yl]carbonyl}-3-[2-(dimethylamino)ethyl]-1-propylurea (Reference Example 8-1) (2.366 g) was added to 2 mol/L hydrochloric acid (30 mL), and the mixture was stirred at room temperature for 2 hours. The reaction mixture was washed with diethyl ether, and then potassium carbonate was added to the aqueous layer to make it alkaline. The mixture was extracted with a methylene chloride/methanol mixed solvent (methylene chloride:methanol = 9:1). The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure to give the title compound (1.605 g).

1 H-NMR (CDCl 

3 ) δ ppm: 0.94 (3H, t, J=7.4 Hz), 1.45-1.90 (6H, m), 1.95-2.05 (1H, m), 2.10-2.55 (17H, m), 2.90-3.10 (2H, m), 3.30-3.45 (2H, m), 3.60-3.80 (2H, m), 9.22 (1H, brs).[α] 

D 28 =-37.56° (c=0.38, MeOH).

[0198]Reference Example 8-1To a mixture of phenyl 1-{[(3’R,4’aR,8’aR)-1′-methyloctahydro-1’H-spiro[1,3-dioxolane-2,6′-quinoline]-3′-yl]carbonyl}-3-[2-(dimethylamino)ethyl]-1-propylurea　N-{[(3’R,4’aR,8’aR)-1′-methyloctahydro-1’H-spiro[1,3-dioxolane-2,6′-quinoline]-3′-yl]carbonyl}-N-propylcarbamate (Reference Example 6-1) (2.401 g) and 2-propanol (30 mL), N,N-dimethylethylenediamine (1.26 mL) was added with stirring at room temperature, and the mixture was heated to 53°C and stirred for 13 hours. After cooling to room temperature, the reaction mixture was concentrated under reduced pressure. The residue was purified by aminopropyl silica gel column chromatography (eluent: 0%-100% ethyl acetate/hexane, gradient elution) to give the title compound (2.383 g).

1 H-NMR (CDCl 

3 ) δ ppm: 0.92(3H, t, J=7.4Hz), 1.35-1.50(3H, m), 1.50-1.90(8H, m), 2.00-2.15(1H, m), 2.26(6H, s), 2.31(3H, s), 2.37(1H, t, J=11.2Hz), 2.46(2H, t, J=6.4Hz), 2.85-3.10(2H, m), 3.35-3.45(2H, m), 3.60-3.70(1H, m), 3.70-3.80(1H, m), 3.90-4.00(4H, m), 9.33(1H, br)[α] 

D 28 =-6.62°(c=0.31, MeOH)

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Mangaciclanol

November 6, 2025 2:48 am / Leave a comment


Mangaciclanol

Cas 2169771-05-3

MF C34H56MnN6O16 MW859.8 g/mol

  • ANU6AE7NAP
  • [[1,1′-[(6-Methyl-3,6,9,15-tetraazabicyclo[9.3.1]pentadeca-1(15),11,13-triene-3,9-diyl-kappaN3,kappaN6,kappaN9,kappaN15)bis[[4-(carboxy-kappaO)-1-oxo-4,1-butanediyl]imino]]bis[1-deoxy-D-glucitolato]](2-)]manganese

2-[9-[1-carboxylato-4-oxo-4-[[(2S,3R,4R,5R)-2,3,4,5,6-pentahydroxyhexyl]amino]butyl]-6-methyl-3,6,9,15-tetrazabicyclo[9.3.1]pentadeca-1(15),11,13-trien-3-yl]-5-oxo-5-[[(2S,3R,4R,5R)-2,3,4,5,6-pentahydroxyhexyl]amino]pentanoate;manganese(2+)

diagnostic imaging agent, ANU6AE7NAP

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Elinzanetant

November 5, 2025 9:46 am / Leave a comment


Elinzanetant

CAS 929046-33-3

MW 668.6 g/mol MF C33H35F7N4O3

N-[6-[(7S,9aS)-7-(hydroxymethyl)-3,4,6,7,9,9a-hexahydro-1H-pyrazino[2,1-c][1,4]oxazin-8-yl]-4-(4-fluoro-2-methylphenyl)-3-pyridinyl]-2-[3,5-bis(trifluoromethyl)phenyl]-N,2-dimethylpropanamide

FDA 10/24/2025, Lynkuet, To treat moderate-to-severe vasomotor symptoms due to menopause

BAY-3427080; GSK-1144814; NT-814, UNII-NZW2BOW35N

Elinzanetant, sold under the brand name Lynkuet, is a medication used for the treatment of moderate to severe vasomotor symptoms due to menopause.[4] It is an neurokinin 1 and neurokinin 3 receptor antagonist.[4] It was developed by Bayer Healthcare.[4] It is taken by mouth.[4]

Elinzanetant is a non-hormonal, selective, neurokinin 1 (NK-1) and neurokinin 3 (NK-3) receptor antagonist.[5] By blocking NK-1 and NK-3 receptors signaling, elinzanetant is postulated to normalize neuronal activity involved in thermo- and sleep regulation in the hypothalamus.[5]

Elinzanetant is an orally bioavailable neurokinin/tachykinin 1 receptor (NK1-receptor; NK1R; NK-1R) and NK3 receptor (NK-3R; NK3R) antagonist, that may be used to treat vasomotor symptoms in menopausal woman. Upon oral administration, elinzanetant targets, competitively binds to and blocks the activity of the NK1R and NK3R in the central nervous system (CNS), thereby inhibiting the binding of the endogenous ligands and neuropeptides substance P (SP; neurokinin-1; NK1) and neurokinin B (NKB). This inhibits NK1R/NK3R-mediated signal transduction and may prevent certain menopausal symptoms such as hot flashes. Neurokinin-mediated signaling may increase during hormone deficiency and may cause hot flashes.

SYN

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2021094247&_cid=P20-MHLSZY-53200-1

“Compound A” refers to 2-[3,5-Bis(trifluoromethyl)phenyl]-N-{4-(4-fluoro-2-methylphenyl)-6-[(7S,9aS)-7-(hydroxymethyl)hexahydropyrazino[2,l-c][l,4]oxazin-8(lH)-yl]-3-pyridi-nyl}-N,2-dimethylpropanamide, and has the chemical structure depicted below.

(Compound A).

Example 8

2-[3.5-Bis(trifluoromethyl¾phenyl1-N-{4-(4-fluoro-2-methylphenyl¾-6-[(7S.9aS¾-7-(hvdroxymethyl¾hexa-hvdropyrazino[2,l-c1[l,41oxazin-8(lH)-yl1-3-pyridinyl}-N, 2-dimethyl propanamide as anhydrous crys talline form (Compound A)

Example 7 (2-[3,5-Bis(trifluoromethyl)phenyl]-N-{4-(4-fluoro-2-methylphenyl)-6-[(7S,9aS)-7-(hy-droxymethyl)hexahydropyrazino[2,l-c][l,4]oxazin-8(lH)-yl]-3-pyridinyl}-N,2-dimethylpropanamide dihydrochloride salt mono-isopropanol solvate (Compound XII)) (3.4 kg), methyl-f-butyl ether (from now on, MTBE) (15.0 L/kg of Example 7) and NaOH 2.5N (4.9 L/kg of Example 7) were loaded, heated to 40QC and stirred for 10 to 30 min. The layers were settled for not less than 30 min at 40QC and the bottom aqueous layer discarded.

An aqueous solution of L-cysteine 9 wt% (5.0 L water per kg of Example 7+ 0.5 w/w L-cysteine per Ex ample 7) was added over the organic layer and stirred at 40QC for not less than 60 min. The layers were settled for not less than 30 min at 40QC and the bottom aqueous layer discarded.

Water (5.0 L/kg of Example 7) was added over the organic layer and stirred at 40QC for not less than 15 min. The layers were settled for not less than 60 min at 40QC and the bottom aqueous layer dis carded.

Water (5.0 L/kg of Example 7) was added over the organic layer and stirred at 40QC for not less than 15 min. The layers were settled for not less than 60 min at 40QC and the bottom aqueous layer dis carded.

The organic layer was concentrated at atmospheric pressure to 2.5 L/kg of Example 7. Iso-octane (8.3 L/kg of Example 7) was added at 50/55QC in not less than lh and the solution distilled under light vac uum to 4.0 L/kg of Example 7. A sample was taken for controlling the water and MTBE removal.

Isopropanol (0.8 L/kg of Example 7) was added and stirred at 65/75QC until total dissolution. The solu tion was cooled down to 45/55QC and filtered to remove any foreign matters. Iso-octane (4.5 L/kg of Example 7) was added and the batch heated to 70QC for not less than 30 min. The solution was cooled down to 50QC and seeded with a slurry of 2-[3,5-Bis(trifluoromethyl)phenyl]-N-{4-(4-fluoro-2-methylphenyl)-6-[(7S,9aS)-7-(hydroxymethyl)hexahydropyrazino[2,l-c][l,4]oxazin-8(lH)-yl]-3-pyridi-nyl}-N,2-dimethylpropanamide(0.008% w/w of Example 7) in iso-octane (0.07 L/kg of Example 7) and isopropanol (0.01 L/kg of Example 7). The seeds were aged at 50QC for not less than 3h and additional iso-octane (4.2 L/kg of Example 7) was added in not less than 3h keeping the temperature at 50/55QC. The slurry was held at 50QC for not less than 8h, cooled down to 0QC in not less than 5h and aged for not less than 3h before proceeding with the centrifugation step.

The slurry was centrifuged and the cake washed with iso-octane (2 x 3.3 L/kg of Example 7).

The wet product was dried under vacuum at 50QC to obtain 2.34 kg of the title compound (yield = 82.7%). This product was sieved for delumping to obtain 2.26kg of the title compound with a 99.8% purity as a white powder.

NMR spectrometer: Varian Agilent Mercury Vx 400 (16 scans, sw 6400 Hz, 25 °C).

*H NMR (400 MHz, DMSO-ds): d 8.02 (s, 1 H), 7.85 (s, 1 H), 7.74 (bd, 2 H), 7.22-6.92 (m, 3 H), 6.61 (s, 1 H), 4.70 (m, 1 H), 4.21 (bd, 1 H), 4.09 (bd, 1 H), 3.75 (m, 3 H), 3.55 (td, 11.3 Hz, 2.2 Hz, 1 H), 3.40 (bd, 1 H), 3.15 (t, 10.5 Hz, 1 H), 3.02 (d, 11.3 Hz, 1 H), 2.63 (d, 11.3 Hz, 1 H), ca. 2.5 (bd, 2 H), 2.31-2.00 (m, 7 H), 1.58-1.10 (m, 6 H).

SYN

Example 34
2-[3,5-Bis(trifluoromethyl)phenyl]-yV-{4-(4-fluoro-2-methylphenyl)-6-[(7S,9aS)-7-(hydroxymethyl)hexahydropyrazino[2,1 -c][1 ,4]oxazin-8(1 H)-yl]-3-pyridinyl}-A/,2-dimethylpropanamide (E34)

2-[3,5-bis(trifluoromethyl)phenyl]-Λ/-[6-[(7S,9aS)-7-({[(1 , 1 -dimethylethyl)(dimethyl)silyl]oxy}methyl)hexahydropyrazino[2,1-c][1 ,4]oxazin-8(1H)-yl]-4-(4-fluoro-2-methylphenyl)-3-pyridinyl]-Λ/,2-dimethylpropanamide (D24) (390 mg, 0.498 mmol) was dissolved 17 ml. of methanol. To this solution was added concentrated HCI (0.9 mL) at 00C, and stirring was continued at room temperature for 3h (complete conversion). The reaction mixture was loaded on a SCX cartridge and washed with MeOH. The product was eluted with 0.5 M methanolic ammonia. The product-containing fractions were evaporated, leaving the target compound as a white solid: 310 mg, 0.464 mmol, 93%.
UPLC/MS: m/z= 669 (M+1 ).
1H-NMR (DMSO-d6): δ (ppm) 8.07-7.97 (s, 1 H), 7.88-7.81 (s, 1 H), 7.79-7.69 (br. s, 2H), 7.19-7.11 (d, 1 H), 7.14-7.06 (br. s, 2H) 6.64-6.56 (s, 1 H), 4.75-4.65 (m, 1 H), 4.31-4.13 (br. S, 1 H), 4.15-4.01 (br. s, 1 H), 3.80-3.68 (m, 3H), 3.58-3.49 (t, 1 H); 3.43-3.34 (m, 1 H); 3.18-3.09 (t, 1 H); 3.04-2.98 (d, 1 H); 2.68-2.58 (d, 1 H); 2.51-2.45 (s, 3H); 2.20-2.13 (s, 3H); 2.29-2.00 (m, 4H); 1.54-1.39 (s, 3H); 1.39-1.28 (s, 3H).

SYN

Crystalline forms of a pyridine derivative

Publication Number: WO-2010015626-A1

Priority Date: 2008-08-05

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2010015626&_cid=P20-MHLT79-60873-1

ntermediate 7

2-r3.5-bis(trifluoromethyl)phenvn-Λ/-f4-(4-fluoro-2-methylphenyl)-6-r(7S,9aS)-7-(hvdroxymethyl)hexahvdro-pyrazinoF2,1-c1f1 ,41oxazin-8(1/-/)-vn-3-pyridinyl}-Λ/.2-dimethylpropanamide

16.90 g of bis(trifluoromethyl)phenyl]-Λ/-[6-chloro-4-(4-fluoro-2-methylphenyl)-3-pyridinyl]- Λ/,2-dimethylpropanamide (WO 2005/002577) 4.58 g sodium tert-butoxide and 2.1O g Bis-(tri-terf-butylphposphine-palladium(O) catalyst was loaded into the vessel under nitrogen.

10.00 g intermediate 6 dissolved in 338 mL toluene was charged to afford a dark brown solution. The solution was heated to 800C and stirred for at least 16 h (thin suspension obtained).

The reaction mixture was cooled down to 20-25°C and 16.90 g celite was added to give a brown suspension. The suspension was filtered over 16.90 g celite and washed with 33.8 mL toluene. 338 mL sat. sodium bicarbonate solution was added and the biphasic system was stirred for 5 min. at 20-250C. After phase separation, the aqueous layer was extracted twice with 118 mL toluene. The combined organic layers were treated with 90 mL of a 10% aqueous cysteine solution and stirred for 1 h at 25°C. After phase separation the organic layer was treated again with 90 mL of a 10% cysteine-solution and stirred for a further 1 h at 25°C. After phase separation , the organic layer was washed with 85 mL half saturated sodium bicarbonate solution then solvent exchanged to dioxane. The dioxane solution was cooled down to 10-150C. 63.5 mL of 4M hydrogen chloride in dioxane was added at 10-150C over at least 10 min. The solution was warmed to 20-25°C and stirred for 2 h.

Dioxane was concentrated down to 85 mL at 45°C under reduced pressure. 85 mL water and 254 mL dichloromethane were added to the residue to give a thin suspension. The biphasic system was stirred for 5 min. at 20-250C. The layers were separated and the organic phase was washed with 33.8 mL saturated sodium bicarbonate solution at 20-25°C (pH adjusted to 7-8). The biphasic system was stirred for 5 min. at 20-250C and the organic layer separated and concentrated under reduced pressure at 500C to afford crude title compound as a pale brown solid. 8.00 g of the title compound (78.8% a/a HPLC) was dissolved in 16 mL ethyl acetate. The filter was loaded with 80 to 104 g silica gel and conditioned with ethyl acetate. The product solution was loaded on top of the column and chromatography was started using ethyl acetate as solvent. The product fractions were combined and partially concentrated at 45-50°C under reduced pressure. To the mixture was added 2.64 g to 4.00 g silicycle (Si-Thiol, 1.2 mmol/g) at rt and stirred for 2 h. Filtration over 8.00 g celite and washing with 32 mL ethyl acetate gave the filtrate which was concentrated to dryness at 45°C afford the title compound as a light brown solid. ( Weight yield 72%) 1H-NMR [ppm, CDCI3]: 8.04-7.91 , (m, 1 H); 7.77, (s, 1 H); 7.72-7.60, (m, 2H); 7.59-7.16, (m, 1H); 7.06-6.74, (m, 2H); 6.44, (s, 1 H); 4.64-4.43, (m, 1 H); 4.38-4.18, (m, 1 H); 4.07-3.96, (m, 2H); 3.95-3.76, (m, 3H); 3.76-3.61 , (m, 1 H); 3.37-3.27, (m, 1 H); 3.16-2.98, (m, 2H); 2.84-2.70, (m, 1 H); 2.67-2.51 , (m, 2H); 2.49-2.22, (m, 5H); 2.19-2.06, (m, 2H); 1.64-1.31 , (m, 5H), OH broad and not observed 

LIT

PAT

Pyridine Derivatives and Their Use in the Treatment of Psychotic Disorders

Publication Number: US-2008269208-A1

Priority Date: 2005-06-06

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Medical uses

Elinzanetant is indicated for the treatment of moderate to severe vasomotor symptoms associated with menopause.[4]

Society and culture

In September 2025, the Committee for Medicinal Products for Human Use of the European Medicines Agency adopted a positive opinion, recommending the granting of a marketing authorization for the medicinal product Lynkuet, intended for the treatment of moderate to severe vasomotor symptoms (hot flushes).[5] The applicant for this medicinal product is Bayer AG.[5]

Lynkuet was approved for medical use in the United States in October 2025.[6]

Names

Elinzanetant is the international nonproprietary name.[7]

Elinzanetant is sold under the brand name Lynkuet.[8]

References

  1.  “Details for: Lynkuet”. Drug and Health Products Portal. 23 July 2025. Retrieved 28 September 2025.
  2.  “Lynkuet product information”. Lynkuet. 23 July 2025. Retrieved 28 September 2025.
  3.  “MHRA approves elinzanetant to treat moderate to severe vasomotor symptoms (hot flushes) caused by menopause”. Medicines and Healthcare products Regulatory Agency (Press release). 8 July 2025. Retrieved 28 September 2025.
  4.  https://www.accessdata.fda.gov/drugsatfda_docs/label/2025/219469s000lbl.pdf
  5.  “Lynkuet EPAR”. European Medicines Agency (EMA). 19 September 2025. Retrieved 27 September 2025. Text was copied from this source which is copyright European Medicines Agency. Reproduction is authorized provided the source is acknowledged.
  6.  “Novel Drug Approvals for 2025”. U.S. Food and Drug Administration (FDA). 24 October 2025. Retrieved 29 October 2025.
  7.  World Health Organization (2020). “International nonproprietary names for pharmaceutical substances (INN): recommended INN: list 84”. WHO Drug Information. 34 (3). hdl:10665/340680.
  8.  “Bayer’s Lynkuet (elinzanetant), the First and Only Neurokinin 1 and Neurokinin 3 Receptor Antagonist, Receives FDA Approval for Moderate to Severe Hot Flashes Due to Menopause” (Press release). Bayer. 24 October 2025. Retrieved 29 October 2025 – via Business Wire.
  • Clinical trial number NCT05042362 for “A Study to Learn More About How Well Elinzanetant Works and How Safe it is for the Treatment of Vasomotor Symptoms (Hot Flashes) That Are Caused by Hormonal Changes Over 26 Weeks in Women Who Have Been Through the Menopause (OASIS-1)” at ClinicalTrials.gov
  • Clinical trial number NCT05099159 for “A Study to Learn More About How Well Elinzanetant Works and How Safe it is for the Treatment of Vasomotor Symptoms (Hot Flashes) That Are Caused by Hormonal Changes Over 26 Weeks in Women Who Have Been Through the Menopause (OASIS-2)” at ClinicalTrials.gov
Clinical data
Trade namesLynkuet
Other namesBAY-3427080; GSK-1144814; NT-814
License dataUS DailyMed: Elinzanetant
Routes of
administration		By mouth
ATC codeNone
Legal status
Legal statusCA: ℞-only[1][2]UK: POM (Prescription only)[3]US: ℞-only[4]
Identifiers
IUPAC name
CAS Number929046-33-3
PubChem CID16063568
ChemSpider17223178
UNIINZW2BOW35N
KEGGD12123
CompTox Dashboard (EPA)DTXSID101337049 
Chemical and physical data
FormulaC33H35F7N4O3
Molar mass668.657 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

///////elinzanetant, Lynkuet, FDA 2025, APPROVALS 2025, BAY 3427080, GSK 1144814, NT 814

Lunresertib

November 5, 2025 2:52 am / Leave a comment


Lunresertib

CAS 2719793-90-3

MF C18H20N4O2 MW 324.4 g/mol

(1P)-2-amino-1-(3-hydroxy-2,6-dimethylphenyl)-5,6-dimethyl1H-pyrrolo[2,3-b]pyridine-3-carboxamide
serine/ threonine kinase inhibitor, antineoplastic, N95U3A7N57, RP-6306, RP 6306

2-Amino-1-(3-hydroxy-2,6-dimethylphenyl)-5,6-dimethylpyrrolo[2,3-b]pyridine-3-carboxamide

Lunresertib is an investigational new drug that is being evaluated for the treatment of cancer. It is an oral small molecule inhibitor of PKMYT1, developed by Repare Therapeutics.[1] This drug targets cell cycle regulation in tumors with specific genetic alterations, including CCNE1 amplifications or FBXW7 and PPP2R1A loss of function mutations. It is currently in phase 1/2 clinical trials, both as monotherapy or in combination with camonsertib, an ATR inhibitor.[2]

Lunresertib is an orally bioavailable inhibitor of the human membrane-associated tyrosine– and threonine-specific cdc2-inhibitory kinase (PKMYT1), with potential antineoplastic activity. Upon oral administration, lunresertib targets, binds to and inhibits the activity of PKMYT1. This results in the inhibition of CDK1 phosphorylation, which may promote both premature mitosis and a prolonged mitotic arrest, and lead to the accumulation of unrepaired DNA damage and apoptosis in susceptible tumor cells, such as CCNE1-overexpressing tumor cells. PKMYT1 phosphorylates CDK1 specifically when CDK1 is complexed to cyclins, which blocks progression from G2 into mitosis.NCI Thesaurus (NCIt)

  • Study of RP-6306 With FOLFIRI in Advanced Solid TumorsCTID: NCT05147350Phase: Phase 1Status: TerminatedDate: 2025-08-20
  • Study of RP-6306 Alone or in Combination With RP-3500 or Debio 0123 in Patients With Advanced Solid TumorsCTID: NCT04855656Phase: Phase 1Status: RecruitingDate: 2025-08-06
  • RP-6306 in Patients With Advanced CancerCTID: NCT05605509Phase: Phase 2Status: Active, not recruitingDate: 2025-07-14
  • Study of RP-6306 With Gemcitabine in Advanced Solid TumorsCTID: NCT05147272Phase: Phase 1Status: TerminatedDate: 2025-06-17
  • Liquid-biopsy Informed Platform Trial to Evaluate CDK4/6-inhibitor Resistant ER+/HER2- Metastatic Breast CancerCTID: NCT05601440Phase: Phase 2Status: RecruitingDate: 2025-01-14
  • Phase 1 Study of RP-6306 With Carboplatin and Paclitaxel in TP53 Ovarian and Uterine Cancer
  • CTID: NCT06107868
  • Phase: Phase 1
  • Status: Active, not recruiting
  • Date: 2024-03-22

PAT

SYN

WO-2021195782

SYN

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2021195781&_cid=P20-MHLE6P-37080-1

Step 9. To a suspension of 2-amino-1-(3-methoxy-2,6-dimethyl-phenyl)-5,6-dimethyl-pyrrolo[2,3-b]pyridine-3-carboxamide (2.22 g, 6.56 mmol, 77% purity) in DCM (25 mL) was added tribromoborane in DCM (1 M, 26 mmol, 26 mL) dropwise. The reaction mixture was stirred at RT for 45 min, then concentrated to dryness. The crude product was taken in DCM and placed in an ice bath and MeOH was added carefully (exotherm). The mixture was concentrated to dryness then co-evaporated twice with MeOH. The residue was triturated with saturated aqueous NaHCO3. The solids were collected by filtration on a Buchner funnel, washed with H2O and air-dried. The still wet solid was dissolved in DCM/MeOH, concentrated to dryness and triturated in 20% MeOH/DCM (50 mL). The solid was collected by filtration, washed with 20% MeOH/DCM, air-dried then dried in vacuo to afford 2-amino-1-(3-hydroxy-2,6-dimethyl-phenyl)-5,6-dimethyl-pyrrolo[2,3-b]pyridine-3-carboxamide (1.60g, 75% yield) as a light beige solid. MS: [M+1]: 325.1. A different batch was purified by preparative HPLC to yield 2-amino-1-(3-hydroxy-2,6-dimethyl-phenyl)-5,6-dimethyl-pyrrolo[2,3-b]pyridine-3-carboxamide (63% yield) as an off-white fluffy solid.

1H NMR (400 MHz, DMSO-d6) δ 9.51 (s, 1H), 7.82 (s, 1H), 7.05 (d, J = 8.3 Hz, 1H), 6.90 (d, J =

8.2 Hz, 1H), 6.71 (br s, 2H), 6.64 (br s, 2H), 2.26 (s, 3H), 2.23 (s, 3H), 1.74 (s, 3H), 1.65 (s, 3H). MS: [M+1]: 325.1.

Chiral SFC separation of Compound 181 (1.60g, 4.93 mmol) (Instrument: Waters Prep 100 SFC-MS; Column: Phenomenex Lux Cellulose-2, 30 x 250 mm, 5 μm; Conditions: isocratic at 55% IPA + 10mM Ammonium Formate with 45% CO2 ; Flow Rate: 70 mL/min) provided

Compound 182 and Compound 183.

Compound 182 from SFC separation of 181. Peak 1 (retention time 3.94 min, 99.86%): (S)-2- amino-1-(3-hydroxy-2,6-dimethyl-phenyl)-5,6-dimethyl-pyrrolo[2,3-b]pyridine-3-carboxamide (381 mg) was obtained as an off white fluffy solid. 1H NMR (400 MHz, DMSO-d6) δ 9.50 (s, 1H), 7.83 (s, 1 H), 7.05 (d, J = 8.3 Hz, 1H), 6.90 (d, J = 8.3 Hz, 1H), 6.72 (s, 2H), 6.65 (s, 2H), 2.26 (s, 3H), 2.24 (s, 3H), 1.74 (s, 3H), 1.65 (s, 3H). MS: [M+1]: 325.1.

Compound 183 from SFC separation of 181. Peak 2 (retention time 4.35 min, 98.09%): (R)-2- amino-1-(3-hydroxy-2,6-dimethyl-phenyl)-5,6-dimethyl-pyrrolo[2,3-b]pyridine-3-carboxamide (495 mg) was obtained as an off white fluffy solid. 1H NMR (400 MHz, DMSO-d6) δ 9.50 (s, 1H), 7.83 (s, 1 H), 7.05 (d, J = 8.2 Hz, 1H), 6.90 (d, J = 8.2 Hz, 1H), 6.72 (s, 2H), 6.66 (s, 2H), 2.26 (s, 3H), 2.24 (s, 3H), 1.74 (s, 3H), 1.65 (s, 3H). MS: [M+1]: 325.1.

SYN

https://pubs.acs.org/doi/full/10.1021/acs.oprd.4c00493

REF

str1

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Clinical data
Other namesRP-6306
Identifiers
IUPAC name
CAS Number2719793-90-3
PubChem CID156869388
ChemSpider115008046
UNIIN95U3A7N57
KEGGD12736
ChEMBLChEMBL5199076
Chemical and physical data
FormulaC18H20N4O2
Molar mass324.384 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

References

  1.  Szychowski J, Papp R, Dietrich E, Liu B, Vallée F, Leclaire ME, et al. (August 2022). “Discovery of an Orally Bioavailable and Selective PKMYT1 Inhibitor, RP-6306”. Journal of Medicinal Chemistry. 65 (15): 10251–10284. doi:10.1021/acs.jmedchem.2c00552. PMC 9837800. PMID 35880755.
  2.  Previtali V, Bagnolini G, Ciamarone A, Ferrandi G, Rinaldi F, Myers SH, et al. (July 2024). “New Horizons of Synthetic Lethality in Cancer: Current Development and Future Perspectives”. Journal of Medicinal Chemistry. 67 (14): 11488–11521. doi:10.1021/acs.jmedchem.4c00113. PMC 11284803. PMID 38955347.

///////lunresertib, Serine/ threonine kinase inhibitor, antineoplastic, N95U3A7N57, RP-6306, RP 6306

Lunbotinib

November 4, 2025 11:27 am / Leave a comment


Lunbotinib

CAS 2479961-46-9

MF C28H28FN11 MW537.6 g/mol

2-[6-(6-{[6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl]methyl}-3,6-diazabicyclo[3.1.1]heptan-3-yl)pyridin-3-yl]-6-methyl-N-(5-methyl1H-pyrazol-3-yl)pyrimidin-4-amine
tyrosine kinase inhibitor, antineoplastic, KL3T9ZU6HQ

  • 2-(6-(6-((6-(4-fluoropyrazol-1-yl)pyridin-3-yl)methyl)-3,6-diazabicyclo(3.1.1)heptan-3-yl)pyridin-3-yl)-6-methyl-N-(5-methyl-1H-pyrazol-3-yl)pyrimidin-4-amine
  • 2-[6-[6-[[6-(4-fluoropyrazol-1-yl)pyridin-3-yl]methyl]-3,6-diazabicyclo[3.1.1]heptan-3-yl]pyridin-3-yl]-6-methyl-N-(5-methyl-1H-pyrazol-3-yl)pyrimidin-4-amine

Lunbotinib is an orally bioavailable selective inhibitor of the proto-oncogene receptor tyrosine kinase rearranged during transfection (RET), with potential antineoplastic activity. Upon oral administration, lunbotinib selectively binds to various RET fusions and mutations, including solvent front resistance mutations, and inhibits the activity of RET. This results in an inhibition of cell growth of tumors that exhibit increased RET activity due to these fusions and mutations. RET overexpression, activating mutations, and fusions result in the upregulation and/or overactivation of RET tyrosine kinase activity in various cancer cell types. Dysregulated RET activity plays a key role in the development and progression of certain cancers. Lunbotinib is able to penetrate the blood-brain barrier (BBB) and may also be able to overcome resistance mechanisms to first generation selective RET inhibitors (SRIs).

SYN

WO2020168939

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2020168939&_cid=P12-MHKH7H-14851-1

Example 6: 2-(6-(6-((6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl)methyl)-3,6-diazabicyclo[3.1.1]heptane-3-yl)pyridin-3-yl)-6-methyl-N-(5-methyl-1H-pyrazol-3-yl)pyrimidin-4-amine (Compound 17)

Step 1: Preparation of 6-(4-fluoro-1H-pyrazol-1-yl)nicotinaldehyde (compound 17a) 

[0396]Compound 8c (2.0 g), 91a hydrochloride (1.58 g), and potassium carbonate (4.45 g) were sequentially added to DMF (15 mL), and the mixture was heated to 80 °C and stirred for 14 h. The reaction mixture was cooled to room temperature, diluted with water (100 mL), and extracted with DCM (50 mL x 2). The organic phases were combined, washed with water and saturated brine, dried over anhydrous sodium sulfate, filtered, concentrated under reduced pressure, and purified by silica gel column chromatography (PE:EA = 10:1) to give compound 17a (0.81 g). MS m/z (ESI): 192.1 [M+H] 

+ . 

[0397]Step 2: Preparation of 2-(6-(6-((6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl)methyl)-3,6-diazabicyclo[3.1.1]heptane-3-yl)pyridin-3-yl)-6-methyl-N-(5-methyl-1H-pyrazol-3-yl)pyrimidin-4-amine (compound 17) 

[0398]1 g of trifluoroacetate (22.82 mg) and compound 17a (27.47 mg) were added to methanol (1.0 mL), followed by the sequential addition of triethylamine (4.45 mg) and sodium cyanoborohydride (13.86 mg), and the reaction was carried out at room temperature for 14 h. After the reaction was completed, the reaction solution was concentrated to dryness under reduced pressure and purified by Prep-HPLC to obtain compound 17 (7.0 mg). MS m/z (ESI): 538.3 [M+H] 

+ . 

[0399]

1H NMR(400MHz,DMSO-d 6)δ11.98(s,1H),9.66(s,1H),9.12(d,J＝2.16Hz,1H),8.67(dd,J＝4.54,0.64Hz,1H),8.43(dd,J＝8.94,2.28Hz,1H),8.41(d,J＝1.68,1H),7.98(dd,J＝8.48Hz,2.12 1H),7.92(d,J＝4.28,1H),7.87(d,J＝8.4,1H),6.78(d,J＝9.0Hz,2H),6.31(br,1H),3.78-3.71(m,4H),3.68-3.52(m,4H),2.59-2.52(m,1H),2.33(s,3H),2.25(s,3H),1.60(d,J＝8.36Hz,1H).

PAT

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//////////Lunbotinib, tyrosine kinase inhibitor, antineoplastic, KL3T9ZU6HQ

Lomedeucitinib

November 3, 2025 9:36 am / Leave a comment


Lomedeucitinib

CAS 2328068-29-5

MF C18H172H3N6O4S

MW 419.5 g/mol

4-{[3-(methanesulfonyl)pyridin-2-yl]amino}-N-(2H3)methyl-6-[(1R)-spiro[2.2]pentane-1-carboxamido]pyridazine-3-carboxamide

4-[(3-methylsulfonyl-2-pyridinyl)amino]-6-[[(2R)-spiro[2.2]pentane-2-carbonyl]amino]-N-(trideuteriomethyl)pyridazine-3-carboxamide
Janus kinase inhibitor, anti-inflammatory, BMS-986322, BMS 986322, EYQ7KA55XA

Lomedeucitinib is an investigational new drug that is being evaluated for the treatment of psoriasis and psoriatic arthritis. It is a tyrosine kinase 2 (TYK2) inhibitor.[1]

  • A Study to Evaluate Effectiveness and Safety of BMS-986322 in Participants With Moderate-to-Severe PsoriasisCTID: NCT05730725Phase: Phase 2Status: CompletedDate: 2024-09-19
  • A Study to Evaluate the Drug Levels, Metabolism, and Removal of BMS-986322 in Healthy Adult Male ParticipantsCTID: NCT06088264Phase: Phase 1Status: CompletedDate: 2024-03-29
  • A Study Investigating Interactions Between BMS-986322 and Rosuvastatin, Metformin and Methotrexate in Healthy ParticipantsCTID: NCT05615012Phase: Phase 1Status: CompletedDate: 2024-03-27
  • A Study to Investigate the Interaction of BMS-986322 and a Combined Oral Hormonal Contraceptive (Ethinyl Estradiol [EE]/Norethindrone [NET]) in Healthy Female ParticipantsCTID: NCT05579574Phase: Phase 1Status: CompletedDate: 2023-08-18
  • A Study to Assess the Safety and Tolerability of BMS-986322 in Healthy Participants of Japanese DescentCTID: NCT05546151Phase: Phase 1Status: CompletedDate: 2023-06-22

SYN

US20210253554

https://patentscope.wipo.int/search/en/detail.jsf?docId=US333829535&_cid=P10-MHIXWK-98212-1

General Scheme for Examples 252 and 253:

Example 252

Step 1

A mixture of cesium carbonate (149 mg, 0.457 mmol), Xantphos (14.43 mg, 0.025 mmol), Pd 2(dba) 3 (11.42 mg, 0.012 mmol), 6-chloro-N-(methyl-d3)-4-((3-(methylthio)pyridin-2-yl)amino)pyridazine-3-carboxamide (65 mg, 0.208 mmol), and (R)-spiro[2.2]pentane-1-carboxamide (50.8 mg, 0.457 mmol) in dioxane (3 mL) was degassed using a vacuum/N2 fill cycle three times. The reaction was heated at 110° C. for 16 hours. The reaction was diluted with water and DCM. The DCM layer was separated and washed two more times with water and then dried (Na 2SO 4), filtered and concentrated. Purification via automated flash chromatography, eluting with methanol in DCM from 0 to 10%, gave the title compound (R)—N-(methyl-d3)-4-((3-(methylthio)pyridin-2-yl)amino)-6-(spiro[2.2]pentane-1-carboxamido)pyridazine-3-carboxamide (54 mg, 67% yield). 1H NMR (400 MHz, CHLOROFORM-d) δ 12.15 (br s, 1H), 9.88 (s, 1H), 8.68 (br s, 1H), 8.36 (br d, J=3.5 Hz, 1H), 8.25 (br s, 1H), 7.72 (br d, J=7.4 Hz, 1H), 6.97 (br dd, J=7.0, 5.1 Hz, 1H), 2.51 (s, 3H), 2.21-2.09 (m, 1H), 1.58-1.10 (m, 6H), 1.08-0.93 (m, 5H).
      LCMS (ESI) m/e 388.1 [(M+H) +, calc’d C 18H 18D 3N 6O 2S 1, 388.1]; LC/MS retention time (method D): t R=0.80 min.

Step 2

To a suspension of hydrogen peroxide (30% solution in water, 0.258 mL, 2.52 mmol) and (R)—N-(methyl-d3)-4-((3-(methylthio)pyridin-2-yl)amino)-6-(spiro[2.2]pentane-1-carboxamido)pyridazine-3-carboxamide (0.0489 g, 0.126 mmol) in AcOH (1 mL) was added sodium tungstate dihydrate (0.042 g, 0.126 mmol) at room temperature. After stirring at room temperature for 1 hour, the reaction was diluted with water, basified with Na 2CO 3 powder and extracted three times with DCM. The DCM layers were combined, washed with Na 2S 2O 3 (5% solution), dried (Na 2SO 4), filtered and concentrated. The crude product was purified using reverse phase prepHPLC to give the title compound (R)—N-(methyl-d3)-4-((3-(methylsulfonyl)pyridin-2-yl)amino)-6-(spiro[2.2]pentane-1-carboxamido)pyridazine-3-carboxamide (16.2 mg, 31%) as a colorless solid. 1H NMR (500 MHz, DMSO-d 6) δ 12.07 (s, 1H), 11.22 (s, 1H), 9.49 (s, 1H), 9.16 (s, 1H), 8.63 (dd, J=4.6, 1.5 Hz, 1H), 8.29 (dd, 0.1=7.8, 1.4 Hz, 1H), 7.34 (dd, 0.1=7.8, 4.7 Hz, 1H), 2.48-2.43 (m, 1H), 1.46-1.41 (m, 1H), 1.42-1.36 (m, 1H), 0.95-0.82 (m, 3H), 0.80-0.73 (m, 1H). (3H methyl sulfone was buried under DMSO peak). LCMS (ESI) m/e 420.0 [(M+H) +, calc’d C 18H 18D 3N 6O 4S, 420.1]; LC/MS retention time (method E): t R=1.38 min; OR: −205.39 (20° C.).

SYN

https://patentscope.wipo.int/search/en/detail.jsf?docId=US242383764&_cid=P10-MHIXVD-97150-1

PAT

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Clinical data
Other namesBMS-986322
Identifiers
IUPAC name
CAS Number2328068-29-5
PubChem CID138620496
IUPHAR/BPS13210
UNIIEYQ7KA55XA
KEGGD12725
ChEMBLChEMBL5314608
Chemical and physical data
FormulaC18H17D3N6O4S
Molar mass419.47 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

References

  1.  Ahsan S, Degener R, Schlamp M (2024). “Non-Invasive Treatments Invade the Psoriasis Pipeline”. Drugs in Context. 13: 2024–5–6. doi:10.7573/dic.2024-5-6. PMC 11313207. PMID 39131603.

////////lomedeucitinib, Janus kinase inhibitor, anti-inflammatory, BMS-986322, BMS 986322, EYQ7KA55XA

Lirodegimod

November 3, 2025 3:02 am / Leave a comment


Lirodegimod

CAS 2502186-79-8

MF C60H74ClN10O14PS, MW 1257.79

[2-[[(5S,8S,10aR)-3-acetyl-8-[[(2S)-5-amino-1-[2-chloro-3-[4-[[(2S)-1-[(2S,4R)-4-hydroxy-2-[[(1S)-1-[4-(4-methyl-1,3-thiazol-5-yl)phenyl]ethyl]carbamoyl]pyrrolidin-1-yl]-3,3-dimethyl-1-oxobutan-2-yl]amino]-4-oxobutyl]phenoxy]-5-oxopentan-2-yl]carbamoyl]-6-oxo-1,2,4,5,8,9,10,10a-octahydropyrrolo[1,2-a][1,5]diazocin-5-yl]carbamoyl]-1H-indole-5-carbonyl]phosphonic acid

L-Prolinamide, N-[4-[3-[[(2S)-2-[[[(5S,8S,10aR)-3-acetyldecahydro-5-[[[5-(phosphonocarbonyl)-1H-indol-2-yl]carbonyl]amino]pyrrolo[1,2-a][1,5]diazocin-8-yl]carbonyl]amino]-5-amino-5-oxopentyl]oxy]-2-chlorophenyl]-1-oxobutyl]-3-methyl-L-valyl-4-hydroxy-N-[(1S)-1-[4-(4-methyl-5-thiazolyl)phenyl]ethyl]-, (4R)-

KT 333, KT333, ANTINEOPLASTIC, Fast Track (United States), Orphan Drug (United States), 4Q6ZHJ2MNA
Lirodegimod is a small molecule drug. The usage of the INN stem ‘-imod’ in the name indicates that Lirodegimod is a immunomodulator, both stimulant/suppressive and stimulant. Lirodegimod has a monoisotopic molecular weight of 1256.45 Da.

Safety, PK, PD, Clinical Activity of KT-333 in Adult Patients With Refractory Lymphoma, Large Granular Lymphocytic Leukemia, Solid Tumors

CTID: NCT05225584

Phase: Phase 1

Status: Completed

Date: 2025-03-19

PAT

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///////////Lirodegimod, KT 333, KT333, ANTINEOPLASTIC, Fast Track, Orphan Drug, 4Q6ZHJ2MNA

Linustedastat

November 1, 2025 6:01 am / Leave a comment


Linustedastat

CAS 2254299-48-2

MFC26H29F2N3O2 MW 453.5 g/mol

FOR-6219, OG-6219, FOR 6219, OG 6219, PP3PLL7GZY, Phase 2, Endometriosis

3-[(8R,9S,13S,14S,15R,17E)-4-fluoro-17-hydroxyimino-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-15-yl]-N-(5-fluoro-2-pyridinyl)propanamide

3-[(17E)-4-fluoro-17-(hidroxiimino)estra-1,3,5(10)-trien-15β-il]-N-(5-fluoropiridin-2-il)propanamida
inhibidor de la hidroxiesteroide 17-beta deshidrogenasa 1(HSD17B1)

  • OriginatorHormos Medical; Solvay Pharmaceuticals B.V.; University of Turku
  • DeveloperOrganon
  • ClassSmall molecules
  • Mechanism of ActionEstradiol dehydrogenase inhibitors
  • Phase IIEndometriosis
  • 02 Jul 2025Efficacy data from the phase II ELENA trial in Endometriosis released by Organon
  • 28 May 2025Organon completes a phase-II clinical trials in Endometriosis (In adults) in Latvia, Sweden, Poland, Italy, France, Hungary, Germany, Czech Republic, Czech Republic, Bulgaria, Belgium, USA (PO) (NCT05560646)
  • 28 Nov 2023No recent reports of development identified for phase-I development in Endometriosis(In volunteers) in United Kingdom (PO)

Linustedastat (developmental code names FOR-6219 and OG-6219) is a 17β-hydroxysteroid dehydrogenase 1 (17β-HSD1; HSD17B1) inhibitor which is under development for the treatment of endometriosis.[1][2][3][4][5] It is a steroidal compound derived from estrone and works by preventing the formation of the more potent estrogen estradiol from the minimally active precursor estrone.[1][2][5] This in turn results in antiestrogenic effects that may be useful in the treatment of estrogen-dependent conditions.[1][2][5] As of November 2023, the drug is in phase 2 clinical trials for endometriosis.[1][2] It is also under preclinical investigation for treatment of breast cancer and endometrial cancer.[5]

A Study to Investigate Efficacy and Safety of OG-6219 BID in 3 Dose Levels Compared With Placebo in Participants Aged 18 to 49 With Moderate to Severe Endometriosis-related Pain

CTID: NCT05560646

Phase: Phase 2

Status: Completed

Date: 2025-05-29

Pat

WO2018224736

https://patentscope.wipo.int/search/en/detail.jsf?docId=WO2018224736&_cid=P21-MHFVBM-49409-1

Compound 26

3-((13S,15R,E)-3-fluoro-17-(hydroxyimino)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-15-yl)-N-(5-fluoropyridin-2-yl)propanamide

Example 26 was prepared in 94% yield from the compound 25 by the same method as with Example 2 in three hours reaction time.

1H NMR (200 MHz, DMSO-d6): 1.03 (s, 3 H), 1.12 – 2.48 (m, 15 H), 2.57 – 2.78 (m, 1 H), 2.80 – 2.95 (m, 2 H), 6.79 – 7.01 (m, 2 H), 7.18 – 7.38 (m, 1 H), 7.72 (td, 1 H), 8.15 (dd, 1 H), 8.31 (d, 1 H), 10.18 (s, 1 H), 10.64 (s, 1 H). MS m/z (TOF ES+): 454 (M+1).

SYNTHESIS

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Clinical data
Other namesFOR-6219; OG-6219; 3-[(17E)-4-Fluoro-17-(hydroxyimino)estra-1,3,5(10)-trien-15β-yl]-N-(5-fluoropyridin-2-yl)propanamide
Identifiers
IUPAC name
CAS Number2254299-48-2
PubChem CID171390018
UNIIPP3PLL7GZY
KEGGD13078
Chemical and physical data
FormulaC26H29F2N3O2
Molar mass453.534 g·mol−1
3D model (JSmol)Interactive image
SMILES
InChI

References

  1.  “FOR 6219”. AdisInsight. 28 November 2023. Retrieved 15 August 2024.
  2.  “Delving into the Latest Updates on Linustedastat with Synapse”. Synapse. 3 August 2024. Retrieved 15 August 2024.
  3.  Barra F, Romano A, Grandi G, Facchinetti F, Ferrero S (June 2019). “Future directions in endometriosis treatment: discovery and development of novel inhibitors of estrogen biosynthesis”. Expert Opin Investig Drugs. 28 (6): 501–504. doi:10.1080/13543784.2019.1618269. hdl:11380/1201688. PMID 31072144.
  4.  Perrone U, Evangelisti G, Laganà AS, Bogliolo S, Ceccaroni M, Izzotti A, Gustavino C, Ferrero S, Barra F (December 2023). “A review of phase II and III drugs for the treatment and management of endometriosis”. Expert Opin Emerg Drugs. 28 (4): 333–351. doi:10.1080/14728214.2023.2296080. PMID 38099328.
  5.  Rižner TL, Romano A (2023). “Targeting the formation of estrogens for treatment of hormone dependent diseases-current status”. Front Pharmacol. 14 1155558. doi:10.3389/fphar.2023.1155558. PMC 10175629. PMID 37188267. Several compounds with inhibitory action on the enzyme HSD17B1 have been developed and one steroidal compound, a competitive HSD17B1 inhibitor (OG-6219) recently entered the clinical phase for endometriosis […] and it is in the preclinical phase for endometrial and breast cancer (Husen et al., 2006a; Husen et al., 2006b; Konings et al., 2018b; Jarvensivu et al., 2018; Xanthoulea et al., 2021). […] Only the C15 estrone derivative developed by Organon Finland, former Forendo pharma (compound FOR-6219/OR-6219) reached the clinical phase for endometriosis with three clinical trials registered in the database Clinical Trails (Table 2). Phase 1 and 1b trials NCT04686669 and NCT03709420 determined the bio-availability of the compound administered orally as gelatine capsule in 12 subjects (NCT04686669) and then the safety, tolerability, food interactions, the pharmacokinetics and pharmacodynamics of escalating doses of the drug in 87 subjects (NCT03709420). The phase 2 randomized, double-blind, Elena study (NCT05560646) is currently recruiting patients and aims at evaluating the efficacy and safety of OG-6219 in women with moderate to severe endometriosis […]

//////////Linustedastat, FOR-6219, OG-6219, FOR 6219, OG 6219, PP3PLL7GZY, Phase 2, Endometriosis

Iodofalan (131I)

October 31, 2025 2:27 am / Leave a comment


Iodofalan (131I)

CAS 76641-05-9

MFC9H10131INO2

Molecular FormulaC9H10INO2

Molecular Weight295.09

4-(131I)iodo-L-phenylalanine

(2S)-2-amino-3-(4-iodophenyl)propanoic acid
radiopharmaceutical, antineoplastic, Phase 2, Glioblastoma, 606VTF676Y, 131I-TLX-101, ACD 101

  • 4-Iodophenylalanine I-131
  • 4-(131I)Iodo-L-phenylalanine
  • 4-Iodo-L-phenylalanine-131I
  • ACD-101
  • L-Phenylalanine, 4-(iodo-131I)-
  • OriginatorTherapeia
  • DeveloperTelix Pharmaceuticals; Therapeia
  • ClassAmino acids; Antineoplastics; Radioisotopes; Radiopharmaceutical diagnostics; Radiopharmaceuticals; Small molecules
  • Mechanism of ActionApoptosis stimulants; Positron-emission tomography enhancers
  • Orphan Drug StatusYes – Glioblastoma
  • Phase IIGlioblastoma
  • 14 Oct 2025Telix Pharmaceuticals receives IND approval for TLX 101 in Glioblastoma
  • 27 Jul 2025Telix Pharmaceuticals plans a phase III IPAX BrIGHT trial for Glioblastoma (Monotherapy, Combination therapy, Recurrent, Second-line therapy or greater) in Australia(IV) (NCT07100730)(EudraCT2025-521785-10) in September 2025
  • 16 Apr 2025Telix has submitted for ethics approval a registration-enabling study of TLX101 in recurrent glioblastoma.

Iodofalan (131I) is a radiopharmaceutical that has garnered significant attention in oncological research due to its targeted therapeutic potential. This compound, which includes the radioactive isotope Iodine-131, has been explored for its efficacy in treating certain types of cancers, particularly those associated with the thyroid. Various research institutions worldwide have been studying Iodofalan (131I) to better understand its clinical benefits, optimize its usage, and minimize potential side effects. As a drug type, Iodofalan (131I) is categorized as a targeted radiopharmaceutical therapy, which leverages the properties of radioactive isotopes to destroy cancer cells with precision. Currently, its primary indications include differentiated thyroid cancer and non-resectable metastatic thyroid cancer, among other investigational uses.

Iodofalan (131I) Mechanism of Action

The mechanism of action for Iodofalan (131I) centers on the properties of Iodine-131, a beta-emitting isotope. When administered, Iodofalan (131I) is selectively absorbed by thyroid cells. This selectivity is due to the thyroid gland’s natural ability to uptake iodine, a key element required for the production of thyroid hormones. Cancerous thyroid tissues retain this ability, making them ideal targets for Iodofalan (131I) therapy.

Once absorbed by the thyroid cancer cells, the radioactive decay of Iodine-131 begins. This decay process emits beta particles, which possess sufficient energy to destroy nearby cells. The radiation from these beta particles causes direct DNA damage, leading to cell death. Additionally, the gamma radiation emitted by Iodine-131 can be used diagnostically to track the distribution and uptake of the compound in the body via imaging techniques such as SPECT (Single Photon Emission Computed Tomography).

The dual role of Iodofalan (131I) in both treatment and diagnostic contexts underscores its importance in managing thyroid cancers. By delivering a localized radiation dose to thyroid cancer cells, Iodofalan (131I) minimizes damage to surrounding healthy tissues, which is a significant advantage over traditional external beam radiotherapy.

What is the indication of Iodofalan (131I)?

The primary indication for Iodofalan (131I) is the treatment of differentiated thyroid cancer, a category that includes papillary and follicular thyroid cancers. These subtypes are characterized by their ability to absorb iodine, making them particularly amenable to radioiodine therapy. Iodofalan (131I) is typically used in cases where the thyroid cancer is not amenable to surgical removal or has metastasized to other parts of the body. In such scenarios, the radiopharmaceutical offers a non-invasive therapeutic option that can target and destroy cancer cells even in distant metastatic sites.

SYN

https://patentscope.wipo.int/search/en/detail.jsf?docId=US42129729&_cid=P21-MHE8B5-15309-1

EXAMPLE 1

      4-Bromo-L-phenylalanine (4-BrPA), 3-bromo-L-phenylalanine (3-BrPA), 4-iodo-L-phenylalanine (4-IPA), 4-ter.butyltinn-L-phenylalanine (4-TBSnPA), 3-ter.butyltinn-L-phenylalanine (3-TBSnPA), 4-methylsilyl-L-phenylalanine (4-Me 3SiPA) and 3-methylsilyl-L-phenylalanine (3-Me 3SiPA) used as starting materials (precursor) for radiolabeling were either purchased commercially or prior synthesized in analogy to the literature. Unless stated otherwise, all other chemicals and solvent were of analytical grade and obtained commercially or via our local hospital pharmacy. Sodium [ 124I]iodide, sodium [ 125I]iodide, sodium [131I]iodide, sodium [ 77Br]bromide, sodium [ 82Br]bromide, and sodium [ 211At]astatine for radiolabeling was obtained in the highest obtainable radiochemical purity, generally in 0.01 N NaOH or in phosphate buffered saline (PBS) from different suppliers. HPLC purification was performed on a Hewlett Packard HPLC system consisting of a binary gradient pump (HP 1100), a Valco 6-port valve with 2500 μl loop, a variable wavelength detector (HP 1100) with a UV detection at 254 nm and a sodium iodide scintillation detector (Berthold, Wildbad, Germany), using reversed-phased column (250×4 mm, Nucleosil-100). The column was eluted at different flow rates in with water/ethanol/acetic acid (89:10:1; v/v) or PBS/ethanol (90:10; v/v).
      The proposed radiolabeled phenylalanines were obtained either by non-isotopic halogen exchange (carrier-added/c.a.) or by radio-demetalation of the corresponding precursor as described in the general scheme 1, resulting to no-carrier-added (n. c. a) products after HPLC separation.

EXAMPLE 2

General synthesis of 3,4-[124I]iodo-L-phenylalanine (m, p-IPA-124), 3,4-[125I]iodo-L-phenylalanine (m,p-IPA-125) and 3,4-[131I]iodo-L-phenylalanine (m,p-IPA-131) by non-isotopic radioiodo-debromination

      A solution of carrier free sodium [ 124I]iodide, sodium [ 125I]iodide or sodium [ 131I]iodide (up to 5 GBq) and 5 μl aqueous Na 2S 2O 5 (4.0 mg Na 2S 2O 5/ml) was evaporated to dryness by passing a stream of nitrogen through a reaction vessel at 100° C., followed by addition of 200 μl of the corresponding L-bromophenylalanine (0.25-0.5 mg/ml 0.1 N H 3PO 4), 20 μl aqueous L-ascorbic acid (10 mg/ml) and 20 μl aqueous Cu(II) sulphate (0.10 mol/l). The reaction vessel was heated for 30 min at 170° C., cooled and the mixture diluted with up to 500 μl water. The radioiodinated product was separated from unreacted starting materials and radioactive impurities by HPLC.
      Generally, 3/4-IPA-124, 3/4-IPA-125 and m/p-IPA-131 were obtained in 88±10% radiochemical yield, with a specific activity >500 GBq/μmol. The fraction containing the radioiodinated products was collected into a sterile tube, buffered with 0.5 M phosphate buffered saline (pH 7.0; Braun, Melsungen, Germany), and sterile filtered through a 0.22 μm sterile membrane (Millex GS, Millipore, Molsheim, France) to an isotonic and injectable radiopharmaceutical for in vitro and in vivo investigations.

PAT

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//////////Iodofalan (131I), radiopharmaceutical, antineoplastic, Phase 2, Glioblastoma, 606VTF676Y, 131I-TLX-101, ACD 101

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