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Enarodustat (JAN).png
Enarodustat Chemical Structure



JTZ 951

Mol weight340.3333


Anti-anemic, Hypoxia inducible factor-prolyl hydroxylase (HIF-PH) inhibitor

Originator Japan Tobacco
Developer Japan Tobacco; JW Pharmaceutical
Class Acetic acids; Amides; Antianaemics; Pyridones; Small molecules; Triazoles
Mechanism of Action Hypoxia-inducible factor-proline dioxygenase inhibitors

Preregistration Anaemia

27 Dec 2019 Japan Tobacco and SalubrisBio enter into a development and marketing agreement for enarodustat (JTZ 951) in China, Hong Kong, Macau and Taiwan for Anaemia
29 Nov 2019 Preregistration for Anaemia in Japan (PO)
31 Oct 2019 Phase I development in Anaemia is ongoing in USA

Enarodustat is a potent and orally active factor prolyl hydroxylase inhibitor, with an EC50 of 0.22 μM. Enarodustat has the potential for renal anemia treatment


WO 2011007856


ACS Medicinal Chemistry Letters (2017), 8(12), 1320-1325


Abstract Image

Inhibition of hypoxia inducible factor prolyl hydroxylase (PHD) represents a promising strategy for the discovery of a next generation treatment for renal anemia. We identified several 5,6-fused ring systems as novel scaffolds of the PHD inhibitor on the basis of pharmacophore analysis. In particular, triazolopyridine derivatives showed potent PHD2 inhibitory activities. Examination of the predominance of the triazolopyridines in potency by electrostatic calculations suggested favorable π–π stacking interactions with Tyr310. Lead optimization to improve the efficacy of erythropoietin release in cells and in vivo by improving cell permeability led to the discovery of JTZ-951 (compound 14), with a 5-phenethyl substituent on the triazolopyridine group, which increased hemoglobin levels with daily oral dosing in rats. Compound 14 was rapidly absorbed after oral administration and disappeared shortly thereafter, which could be advantageous in terms of safety. Compound 14 was selected as a clinical candidate.

(7-Hydroxy-5-phenethyl-[1,2,4]triazolo[1,5-a]pyridine-8-carbonyl)glycine (14)

To a solution of SI-5 (2.28 g, 6.19 mmol) in EtOH (9.1 mL) was added 2N NaOH aq. (12.4 mL, 24.8 mmol) at room temperature. After stirring at 90 °C for 2 h, 6N HCl aq. (4.1 mL, 24.6 mmol). This was allowed to gradually cool with stirring and crystals were precipitated. The crystals were collected by filtration to give the title compound 14 (2.16 g, 103% yield). 1H NMR (400 MHz, DMSO-D6) δ: 14.22 (s, 1H), 12.98 (br s, 1H), 9.84 (t, J = 5.6 Hz, 1H), 8.58 (s, 1H), 7.33– 7.18 (m, 5H), 6.80 (s, 1H), 4.22 (d, J = 5.6 Hz, 2H), 3.40 (t, J = 7.7 Hz, 2H), 3.12 (t, J = 7.7 Hz, 2H). 13C NMR (126 MHz, CDCl3) δ: 170.28, 167.70, 165.32, 152.95, 148.53, 146.49, 140.05, 128.33, 128.20, 126.17, 106.72, 95.56, 41.00, 31.95, 31.72. HRMS m/z: [M+H]+ calcd for C17H17N4O4, 341.1244; found, 341.1243. Anal. (C17H16N4O4) calcd C 59.99%, H 4.74%, N 16.46%; found C 60.02%, H, 4.78%, N, 16.42%. Melting point: 186 °C Purity: 100.0%.


 WO 2018097254


US 20200017492

/////////////Enarodustat, 2020 APPROVALS, JAPAN 2020, エナロデュスタット  , JTZ 951, ENAROY, 2020 APPROVALS, 

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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, 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...... , 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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