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ORGANIC SPECTROSCOPY

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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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Novel lead compounds in pre-clinical development against African sleeping sickness


Med. Chem. Commun., 2017, 8,1872-1890
DOI: 10.1039/C7MD00280G, Review Article
Michael Berninger, Ines Schmidt, Alicia Ponte-Sucre, Ulrike Holzgrabe
This article reviews the recent progress in drug development against the African sleeping sickness.

Novel lead compounds in pre-clinical development against African sleeping sickness

 Author affiliations

Abstract

Human African trypanosomiasis (HAT), also known as African sleeping sickness, is caused by parasitic protozoa of the genus Trypanosoma. As the disease progresses, the parasites cross the blood brain barrier and are lethal for the patients if the disease is left untreated. Current therapies suffer from several drawbacks due to e.g. toxicity of the respective compounds or resistance to approved antitrypanosomal drugs. In this review, the different strategies of drug development against HAT are considered, namely the target-based approach, the phenotypic high throughput screening and the drug repurposing strategy. The most promising compounds emerging from these approaches entering an in vivo evaluation are mentioned herein. Of note, it may turn out to be difficult to confirm in vitro activity in an animal model of infection; however, possible reasons for the missing efficacy in unsuccessful in vivo studies are discussed.

Conclusion  There are various starting points to generate hit compounds for the treatment of  African sleeping sickness. Especially stage II of HAT which is very hard to treat poses a  tough challenge for drug discovery programs as molecules inevitably need to cross the BBB. However, promising compounds (2, 15, and 17) are in the pipeline accomplishing these criteria for CNS mouse models, and in some cases even are  orally bioavailable (15 and 17). Especially the large phenotypic screening campaigns performed by the GNF, GlaxoSmithKline, DDU, and Sykes et al. resulted in promising hits discussed herein. Nevertheless, it is not always easy to translate results from in vitro studies into in vivo efficacy like shown in several of the mentioned studies. The reasons for in vivo failures are multilayered and might originate from (I) extensive  metabolism, (II) high plasma protein binding, (III) poor water solubility, (IV) efflux  transporters, (V) different sensitivity for particular strains, (VI) reduced permeability,  and (VII) growth inhibition rather than trypanocidal effects.

Image result for University of Würzburg Ulrike Holzgrabe

  • 1974 – 1981
    Studied chemistry and pharmacy at Marburg University and Kiel University
  • 1990 – 1999
    C3 professor at the University of Bonn, Germany
  • 1994 – 1995
    Visiting professor at the University of Erlangen-Nuremberg, Germany, and the University of Illinois at Chicago, USA
  • 1997 – 1999
    Vice-rector for teaching, studies and study reform at the University of Bonn
  • Since 1999
    C4/W3 professor of pharmaceutical chemistry at the University of Würzburg, Germany
  • Since 2009
    Dean of the Faculty of Chemistry and Pharmacy at the University of Würzburg

 Selected publications

  • Mohr, K. et al.: Rational design of dualsteric GPCR ligands: quests and promise. In: Br. J. Pharmacol. 159, 2010. pp. 997-1008.
  • Antony, J. et al.: Dualsteric GPCR targeting: a novel route to binding and signalling pathway selectivity. In: FASEB J. 23, 2009. pp. 442-450 (Listed as a “Must Read” by the “Faculty of 1000 Biology – the expert guide to the most important advances in biology”).
  • Niedermeier, S. et al.: A small-molecule inhibitor of Nipah virus envelope protein-mediated membrane fusion. In: J. Med. Chem. 52, 2009. pp. 4257-4265.
  • Göbel, T. et al.: In search of novel agents for therapy of tropical diseases and human immunodeficiency virus. In: J. Med. Chem. 51, 2008. pp. 238-250.
  • Hörr, V. et al.: Laser-induced fluorescence-capillary electrophoresis and fluorescence microplate reader measurement: two methods to quantify the effect of antibiotics. In: Anal. Chem. 79, 2007. pp. 7510-7518 (reviewed by D.L. Shenkenberg in Biophotonics International, Dec. 2007, pp. 57-58).
  • Disingrini, T. et al.: Design, synthesis, and action of oxotremorine-related hybrid-type allosteric modulators of muscarinic acetylcholine receptors. In: J. Med. Chem. 49, 2006. pp. 366-372.

 Selected projects

  • Characterisation of the oncogenic signalling network in multiple myeloma: development of targeted therapies, clinical research group KFO 216, inhibitors of the HSF/HSP system for treating multiple myeloma, since 2009
  • Identification, preparation and functional analysis of active ingredients for combating infectious diseases, SFB 630, small molecules for treating tropical infectious diseases, since 2003
  • Allosteric modulators and subtype-selective ligands of the muscarinic receptors, since 1991

 Membership in scientific bodies/juries

  • German Research Foundation (DFG) review-board member at the University of Würzburg, Germany, since 2009
  • Member of the Board of Pharmaceutical Science, International Federation of Pharmacy (FIP), since 2008
  • Member of the executive committee, European Federation for Pharmaceutical Sciences (Eufeps), since 2007
  • President of the German Pharmaceutical Society, 2004 – 2007
  • Member of the board of trustees of the University of Bonn, Germany, 2003 – 2007
  • Member of the scientific advisory board, German Federal Institute for Drugs and Medical Devices (BfArM), since 2002
  • Member of the German and European pharmacopoeia commissions, as well as president of several German and European pharmacopoeia boards, since 2001
 Image result for University of Würzburg Michael Berninger
Image result for University of Würzburg Michael Berninger
Image result for University of Würzburg Michael Berninger
Image result for University of Würzburg Institute of Pharmacy and Food Chemistry
WURZBERG
Image result for University of Würzburg Institute of Pharmacy and Food Chemistry
Image result for University of Würzburg Institute of Pharmacy and Food Chemistry
Image result for University of Würzburg Institute of Pharmacy and Food Chemistry
///////////University of Würzburg,  Ulrike Holzgrabe

SURAMIN


Suramin

A polyanionic compound with an unknown mechanism of action. It is used parenterally in the treatment of African trypanosomiasis and it has been used clinically with diethylcarbamazine to kill the adult Onchocerca. (From AMA Drug Evaluations Annual, 1992, p1643) It has also been shown to have potent antineoplastic properties.

A polyanionic compound with an unknown mechanism of action. It is used parenterally in the treatment of African trypanosomiasis and it has been used clinically with diethylcarbamazine to kill the adult Onchocerca. (From AMA Drug Evaluations Annual, 1992, p1643) It has also been shown to have potent antineoplastic properties. Suramin is manufactured by Bayer in Germany as Germanin®.

Also known as: Naphuride, Germanin, Naganol, Belganyl, Fourneau, Farma, Antrypol, Suramine, Naganin

8,8′-{Carbonylbis[imino-3,1-phenylenecarbonylimino(4-methyl-3,1-phenylene)carbonylimino]}di(1,3,5-naphthalenetrisulfonic acid) …FREE FORM

8,8′-[Ureylenebis[m-phenylenecarbonylimino(4-methyl-m-phenylene)carbonylimino]]di(1,3,5-naphthalenetrisulfonic acid) hexasodium salt

CAS  145-63-1 FREE FORM

129-46-4 of hexa sodium

LAUNCHED 1940 BAYER

Formula C51H40N6O23S6 
Mol. mass 1297.29

The molecular formula of suramin is C51H34N6O23S6. It is a symmetric molecule in the center of which lies ureaNH-CO-NH. Suramin contains eightbenzene rings, four of which are fused in pairs (naphthalene), four amide groups in addition to the one of urea and six sulfonate groups. When given as drug it usually contains six sodium ions that form a salt with the six sulfonate groups.

Suramin is a drug developed by Oskar Dressel and Richard Kothe of BayerGermany in 1916, and is still sold by Bayer under the brand nameGermanin.

Suramin sodium is a heparanase inhibitor that was first launched in 1940 by Bayer under the brand name Antrypol for the treatment of helminthic infection. It was later launched by Bayer for the treatment of trypanosomiasis (African sleeping sickness).

More recently, the product has entered early clinical development at Ohio State University for the treatment of platinum-pretreated patients with stage IIIB/IV non-small cell lung cancer, in combination with docetaxel or gemcitabine.

The National Cancer Institute (NCI) is conducting phase II clinical studies for the treatment of glioblastoma multiforme and for the treatment of adrenocortical carcinoma.

According to the National Cancer Institute there are no active clinical trials (as of April 1, 2008). Completed and closed clinical trials are listed here:[1]

In addition to Germanin, the National Cancer Institute also lists the following “Foreign brand names”: 309 F or 309 Fourneau,[1] Bayer 205, Moranyl, Naganin, Naganine.

It is used for treatment of human sleeping sickness caused by trypanosomes.[2]

It has been used in the treatment of onchocerciasis.[3]

It has been investigated as treatment for prostate cancer.[4]

Also, suramin as treatment for autism is being evaluated. [5]

Suramin is administered by a single weekly intravenous injection for six weeks. The dose per injection is 1 g.

The most frequent adverse reactions are nausea and vomiting. About 90% of patients will get an urticarial rash that disappears in a few days without needing to stop treatment. There is a greater than 50% chance of adrenal cortical damage, but only a smaller proportion will require lifelongcorticosteroid replacement. It is common for patients to get a tingling or crawling sensation of the skin with suramin. Suramin will cause clouding of the urine which is harmless: patients should be warned of this to avoid them becoming alarmed.

Kidney damage and exfoliative dermatitis occur less commonly.

Suramin has been applied clinically to HIV/AIDS patients resulting in a significant number of fatal occurrences and as a result the application of this molecule was abandoned for this condition. http://www.ncbi.nlm.nih.gov/pubmed/3548350

Suramin is also used in research as a broad-spectrum antagonist of P2 receptors[6][7] and agonist of Ryanodine receptors.[8]

ChemSpider 2D Image | 8,8'-{Carbonylbis[imino-3,1-phenylenecarbonylimino(4-methyl-3,1-phenylene)carbonylimino]}di(1,3,5-naphthalenetrisulfonic acid) | C51H40N6O23S6suramin

Its effect on telomerase has been investigated.[9]

It may have some activity against RNA viruses.[10]

In addition to antagonism of P2 receptors, Suramin inhibits the acitivation of heterotrimeric G proteins in a variety of other GPCRs with varying potency. It prevents the association of heteromeric G proteins and therefore the receptors Guanine exchange functionality (GEF). With this blockade the GDP will not release from the Gα subunit so it can not be replaced by a GTP and become activated. This has the effect of blocking downstream G protein mediated signaling of various GPCR proteins including Rhodopsin, the A1 Adenosine receptor, and the D2 dopamine receptor.[11]

A polyanionic compound with an unknown mechanism of action. It is used parenterally in the treatment of African trypanosomiasis and it has been used clinically with diethylcarbamazine to kill the adult Onchocerca. (From AMA Drug Evaluations Annual, 1992, p1643) It has also been shown to have potent antineoplastic properties. Suramin is manufactured by Bayer in Germany as Germanin®.

8-1-2012

InCl3-catalysed synthesis of 2-aryl quinazolin-4(3H)-ones and 5-aryl pyrazolo[4,3-d]pyrimidin-7(6H)-ones and their evaluation as potential anticancer agents.

Bioorganic & medicinal chemistry letters

9-1-2012

Identification of a sirtuin 3 inhibitor that displays selectivity over sirtuin 1 and 2.

European journal of medicinal chemistry

1-1-2013

Inhibition of the human deacylase Sirtuin 5 by the indole GW5074.

Bioorganic & medicinal chemistry letters

5-9-2013

Discovery of thieno[3,2-d]pyrimidine-6-carboxamides as potent inhibitors of SIRT1, SIRT2, and SIRT3.

Journal of medicinal chemistry

  1.  The formula of suramin was kept secret by Bayer for commercial reasons. But it was elucidated and published in 1924 by Fourneau and his team of the Pasteur Institute, and it is only on this date that its exact chemical composition was known. (E. Fourneau, J. and Th. Tréfouël and J. Vallée (1924). “Sur une nouvelle série de médicaments trypanocides”, C. R. Séances Acad. Sci. 178: 675.)
  2. Darsaud A, Chevrier C, Bourdon L, Dumas M, Buguet A, Bouteille B (January 2004). “Megazol combined with suramin improves a new diagnosis index of the early meningo-encephalitic phase of experimental African trypanosomiasis”Trop. Med. Int. Health 9 (1): 83–91.doi:10.1046/j.1365-3156.2003.01154.xPMID 14728611.
  3.  Anderson J, Fuglsang H (July 1978). “Further studies on the treatment of ocular onchocerciasis with diethylcarbamazine and suramin”Br J Ophthalmol 62 (7): 450–7.doi:10.1136/bjo.62.7.450PMC 1043255PMID 678497.
  4.  Ahles TA, Herndon JE, Small EJ, et al. (November 2004). “Quality of life impact of three different doses of suramin in patients with metastatic hormone-refractory prostate carcinoma: results of Intergroup O159/Cancer and Leukemia Group B 9480”. Cancer 101 (10): 2202–8.doi:10.1002/cncr.20655PMID 15484217.
  5.  http://medicalxpress.com/news/2013-03-drug-treatment-autism-symptoms-mouse.html
  6.  Abbracchio MP, Burnstock G, Boeynaems JM, Barnard EA, Boyer JL, Kennedy C, Knight GE, Fumagalli M, Gachet C, Jacobson KA, Weisman GA. (september 2006). “International Union of Pharmacology LVIII: update on the P2Y G protein-coupled nucleotide receptors: from molecular mechanisms and pathophysiology to therapy”. Pharmacol Rev. 58 (3): 281–341.doi:10.1124/pr.58.3.3PMID 16968944.
  7.  Khakh BS, Burnstock G, Kennedy C, King BF, North RA, Séguéla P, Voigt M, Humphrey PP. (march 2001). “International union of pharmacology. XXIV. Current status of the nomenclature and properties of P2X receptors and their subunits”. Pharmacol Rev. 53 (1): 107–118.PMID 11171941.
  8.  Wolner I, Kassack MU, Ullmann H, Karel A, Hohenegger M (October 2005). “Use-dependent inhibition of the skeletal muscle ryanodine receptor by the suramin analogue NF676”Br. J. Pharmacol. 146 (4): 525–33. doi:10.1038/sj.bjp.0706359PMC 1751178.PMID 16056233.
  9.  Erguven M, Akev N, Ozdemir A, Karabulut E, Bilir A (August 2008). “The inhibitory effect of suramin on telomerase activity and spheroid growth of C6 glioma cells”Med. Sci. Monit. 14(8): BR165–73. PMID 18667993.
  10.  Mastrangelo E, Pezzullo M, Tarantino D, Petazzi R, Germani F, Kramer D, Robel I, Rohayem J, Bolognesi M, Milani M (2012) Structure-based inhibition of norovirus RNA-dependent RNA-polymerases. J Mol Biol
  11.  Beindl W, Mitterauer T, Hohenegger M, Ijzerman AP, Nanoff C, Freissmuth M. (August 1996).“Inhibition of receptor/G protein coupling by suramin analogues”ol. Pharmacology. 50 (2): 415–23. PMID 8700151.
  12. Drugs Fut 1986, 11(10): 860
  13. WO 2012159107
  14. WO 2012087336
  15. US 2011257109
  16. WO 2009022897
  17. WO 2009020613
  18. WO 2008094027
  19.   EP 0486809
  20. US 5158940
  21. US 5173509
  22. WO 1993007864
  23. WO 1994008574

SURAMIN

Enterovirus-71 (EV71) is one of the major causative reagents for hand-foot-and-mouth disease. In particular, EV71 causes severe central nervous system infections and leads to numerous dead cases. Although several inactivated whole-virus vaccines have entered in clinical trials, no antiviral agent has been provided for clinical therapy. In the present work, we screened our compound library and identified that suramin, which has been clinically used to treat variable diseases, could inhibit EV71 proliferation with an IC50 value of 40μM. We further revealed that suramin could block the attachment of EV71 to host cells to regulate the early stage of EV71 infection, as well as affected other steps of EV71 life cycle. Our results are helpful to understand the mechanism for EV71 life cycle and provide a potential for the usage of an approved drug, suramin, as the antiviral against EV71 infection.

  • Suramin Hexasodium
  • 129-46-4

Synonyms

  • 309 F
  • Antrypol
  • BAY 205
  • Bayer 205
  • CI-1003
  • EINECS 204-949-3
  • Fourneau 309
  • Germanin
  • Moranyl
  • Naganin
  • Naganine
  • Naganinum
  • Naganol
  • Naphuride sodium
  • NF060
  • NSC 34936
  • SK 24728
  • Sodium suramin
  • Suramin Hexasodium
  • Suramin sodium
  • Suramina sodica
  • Suramina sodica [INN-Spanish]
  • Suramine sodique
  • Suramine sodique [INN-French]
  • Suramine sodium
  • Suraminum natricum
  • Suraminum natricum [INN-Latin]
  • UNII-89521262IH

Suramin Sodium, is an anticancer agent with a wide variety of activities.

Recently suramin was shown to inhibit FSH binding to its receptor (Daugherty, R. L.; Cockett, A. T. K.; Schoen, S. R. and Sluss, P. M. “Suramin inhibits gonadotropon action in rat testis: implications for treatment of advanced prostate cancer” J. Urol. 1992, 147, 727-732).

This activity causes, at least in part, the decrease in testosterone production seen in rats and humans that were administered suramin(Danesi, R.; La Rocca, R. V.; Cooper, M. R.; Ricciardi, M. P.; Pellegrini, A.; Soldani, P.; Kragel, P. J.; Paparelli, A.; Del Tacca, M.; Myers, C. E, “Clinical and experimental evidence of inhibition of testosterone production by suramin.” J. Clin. Endocrinol. Metab. 1996, 81, 2238-2246).

Suramin is the only non-peptidic small molecule that has been reported to be an FSH receptor binding antagonist.

Figure US06200963-20010313-C00003

Suramin is 8,8′ – (carbonylbis(imino-3,1-phenylenecarbonylimino (4-methyl-3,1-phenylene) carbonylimino)) bis-1,3 ,5-naphthalenetrisulfonic acid (GB Patent No. 224849). This polyanionic compound has been used for many decades as a prophylactic and therapeutic agent for try- panosomiasis. It was subsequently shown that suramin is able to block the activity of a variety of proteins like cellular and viral enzymes and growth factors (Mitsuya, M. et al. Science 226 : 172 (1984), Hosang, M. J. Cell. Biochem. 29 : 265 (1985), De Clercq, E. Cancer Lett. 8 : 9 (1979)).

 

5-32-1977

Complement inhibitors

5-25-1977

Aromatic amidines as antiviral agents in animals

5-4-1977

Complement inhibitors

5-4-1977

Complement inhibitors

4-27-1977

Cyclodextrin sulfate salts as complement inhibitors

4-20-1977

Ureylenebis methyl-phenylene-carbonyl-bis-dihydro-2-oxo-naphthoxazine disultonic acids

3-30-1977

Water treatment for controlling the growth of algae employing biguanides

3-2-1977

Isoxazole substituted nitroimidazoles

2-16-1977

Amidophenyl-azo-naphthalenesulfonic complement inhibitors and method of use thereof

2-9-1977

Complement inhibitors

2-10-2011

MODULATION OF HUMAN MAST CELL ACTIVATION MODULATION OF HUMAN MAST CELL ACTIVATION

11-18-2010

Admixtures for inorganic binders based on a hydrogenated disaccharide, inorganic binders containing these admixtures and process for their preparation Admixtures for inorganic binders based on a hydrogenated disaccharide, inorganic binders containing these admixtures and process for their preparation

10-28-2010

THERAPEUTIC INHIBITORS OF VASCULAR SMOOTH MUSCLE CELLS

9-9-2010

APPARATUS FOR USING ELECTROPORATION MEDIATED DELIVERY OF DRUGS AND GENES

4-8-2010

PREPARATION AND USE OF SULFATED OLIGOSACCHARIDES

10-29-2009

THERAPEUTIC INHIBITOR OF VASCULAR SMOOTH MUSCLE CELLS THERAPEUTIC INHIBITOR OF VASCULAR SMOOTH MUSCLE CELLS

8-20-2009

METHOD OF MAKING MINERAL FIBRES METHOD OF MAKING MINERAL FIBRES

6-25-2009

OXYGEN-FUEL BOOST REFORMER PROCESS AND APPARATUS

4-23-2009

METHODS OF TREATING VASCULAR DISEASE WITH TNF ANTAGONISTS METHODS OF TREATING VASCULAR DISEASE WITH TNF ANTAGONISTS

3-26-2009

COPOLYMER COMPOSITIONS FOR ORAL DELIVERY

5-3-1978

1,3,5- Or 1,3,6-naphthalenetriyltris(sulfonylimino)aryl acids and salts

3-22-1978

Nitroimidazoles

2-15-1978

Treatment of rheumatoid arthritis and related diseases

1-4-1978

AROMATIC AMIDINES AS ANTIVIRAL AGENTS IN ANIMALS

1-4-1978

Malto-dextrin poly(H-)sulfates

12-14-1977

Disazo compounds useful as complement inhibitors

12-7-1977

Bis-substituted naphthalene-azo phenyleneazo-stilbene-disulfonic and naphthalene-sulfonic acid

9-28-1977

UREIDOPHENYLENEBIS(CARBONYLIMINO)DINAPHTHALENETRISULFONIC ACID COMPOUNDS

9-21-1977

Substituted bisnaphthylazo diphenyl ureido complement inhibitors

9-7-1977

Substituted-hydroxy-naphthalenedisulfonic acid compounds

1-12-1977

Complement inhibitors

12-22-1976

Complement inhibitors

10-13-1976

Complement inhibitors

EP0183352A2 * Sep 27, 1985 Jun 4, 1986 THE UNITED STATES OF AMERICA as represented by the Secretary United States Department of Commerce Use of suramin for clinical treatment of infection with any of the members of the family of human-t-cell leukemia (htvl) viruses including lymphadenopathy virus (lav)
EP0205077A2 * Jun 3, 1986 Dec 17, 1986 Bayer Ag Suramin sodium for use as an immunostimulant

EP0515523A1 * Feb 13, 1991 Dec 2, 1992 THE UNITED STATES OF AMERICA as represented by the Secretary United States Department of Commerce Use of suramin to treat rheumatologic diseases
EP0755254A1 * Mar 24, 1995 Jan 29, 1997 The Trustees Of The University Of Pennsylvania Prevention and treatment of ischemia-reperfusion and endotoxin-related injury using adenosine and purino receptor antagonists
EP1460087A1 * Feb 17, 1997 Sep 22, 2004 The Kennedy Institute Of Rheumatology Methods of treating vascular disease with TNF antagonists
EP1940376A2 * Oct 3, 2006 Jul 9, 2008 Rottapharm S.P.A. Use of neboglamine in the treatment of toxicodependency
EP1945204A2 * Oct 27, 2006 Jul 23, 2008 Brane Discovery S.R.L. V-atpase inhibitors for use in the treatment of septic shock
US5453444 * Oct 6, 1994 Sep 26, 1995 Otsuka Pharmaceutical Co., Ltd. Method to mitigate or eliminate weight loss
US5534539 * Jun 12, 1995 Jul 9, 1996 Farmitalia Carlo Erba S.R.L. Biologically active ureido derivatives useful as anit-metastic agenst
US5596105 * Jan 13, 1995 Jan 21, 1997 Farmitalia Carlo Erba S.R.L. Therapeutically active naphthalenesulfonic pyrrolecarboxamido derivatives
US7476693 Mar 26, 2003 Jan 13, 2009 Eastern Virginia Medical School Suramin and derivatives thereof as topical microbicide and contraceptive
US7608262 Feb 16, 1996 Oct 27, 2009 The Kennedy Institute Of Rheumatology Methods of preventing or treating thrombosis with tumor necrosis factor antagonists
US8552064 Dec 19, 2008 Oct 8, 2013 Eastern Virginia Medical School Suramin and derivatives thereof as topical microbicide and contraceptive
WO1994008574A1 * Oct 12, 1993 Apr 28, 1994 Otsuka America Pharmaceutical Treatment of cachexia and inhibition of il-6 activity
WO1994010990A1 * Nov 12, 1993 May 26, 1994 British Bio Technology Inhibition of tnf production
WO1997030088A2 * Feb 17, 1997 Aug 21, 1997 Kennedy Inst Of Rheumatology Methods of treating vascular disease with tnf antagonists
WO2004113920A1 * Jun 18, 2004 Dec 29, 2004 Babon Jeff James Screening method for substances binding to merozoite surface protein-1/42
WO2008138943A2 * May 14, 2008 Nov 20, 2008 Mara Galli Prophylactic and therapeutic use of sirtuin inhibitors in tnf-alpha mediated pathologies
WO2009137471A2 * May 5, 2009 Nov 12, 2009 University Of Miami Azo dye related small molecule modulators of protein-protein interactions
WO2010016628A1 * Jul 10, 2009 Feb 11, 2010 Sammy Opiyo Conjugated suramin amino compounds for medical conditions
WO2012159107A1 * May 21, 2012 Nov 22, 2012 Rhode Island Hospital Inhibition of renal fibrosis

Title: Suramin Sodium

CAS Registry Number: 129-46-4

CAS Name: 8,8¢-[Carbonylbis[imino-3,1-phenylenecarbonylimino(4-methyl-3,1-phenylene)carbonylimino]]bis-1,3,5-naphthalenetrisulfonic acid hexasodium salt

Additional Names: hexasodium sym-bis(m-aminobenzoyl-m-amino-p-methylbenzoyl-1-naphthylamino-4,6,8-trisulfonate) carbamide

Manufacturers’ Codes: Bayer 205; Fourneau 309

Trademarks: Antrypol (AstraZeneca); Germanin (Bayer); Moranyl (Specia); Naganol; Naphuride

Molecular Formula: C51H34N6Na6O23S6

Molecular Weight: 1429.17

Percent Composition: C 42.86%, H 2.40%, N 5.88%, Na 9.65%, O 25.75%, S 13.46%

Literature References: Discovered in 1917 by O. Dressel and R. Kothe: J. Dressel, J. Chem. Educ. 38, 620 (1961). Prepn: E. Fourneau et al., Compt. Rend. 178, 675 (1924); J. Trefouel, E. Fourneau, GB 224849 (1923); B. Heymann, Angew. Chem. 37, 585 (1924). Pharmacology, toxicology and clinical antiparasitic activity: F. Hawking, Adv. Pharmacol. Chemother. 15, 289-322 (1978). Inhibition of reverse transcriptase in vitro: E. De Clercq, Cancer Lett. 8, 9 (1979); vs HIV: H. Mitsuya et al., Science 226, 172 (1984). HPLC determn in plasma: R. W. Klecker, J. M. Collins, J. Liq. Chromatogr. 8, 1685 (1985). Pharmacokinetics: J. M. Collins et al., J. Clin. Pharmacol. 26, 22 (1986). Pharmacology and virustatic effect in AIDS: S. Broder et al., Lancet 2, 627 (1985); A. M. Levine et al., Ann. Intern. Med. 105, 32 (1986). Clinical trial in onchocerciasis: H. Schultz-Key et al., Trop. Med. Parasitol. 36, 244 (1985); in prostate cancer: C. Myers et al., J. Clin. Oncol. 10, 881 (1992). Review: Olenick in Antibiotics vol. 3,J. W. Corcoran, F. E. Hahn, Eds. (Springer-Verlag, New York, 1975) pp 699-703; R. La Rocca et al., Cancer Cells 2, 106-115 (1990).

Properties: White or slightly pink or cream-colored powder. Slightly bitter taste. Hygroscopic. Freely sol in water, in physiological saline; sparingly sol in 95% alcohol. Insol in benzene, ether, petr ether, chloroform. Aq solns are neutral to litmus. LD50 in mice (mg/kg): ~620 i.v. (Hawking).

Toxicity data: LD50 in mice (mg/kg): ~620 i.v. (Hawking)

Therap-Cat: Anthelmintic (Nematodes); antiprotozoal (Trypanosoma).

Therap-Cat-Vet: Antiprotozoal (Trypanosoma).

Keywords: Anthelmintic (Nematodes); Antiprotozoal (Trypanosoma); Reverse Transcriptase Inhibitor.

Suramin Sodium

ANTHONY MELVIN CRASTO

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DR ANTHONY MELVIN CRASTO Ph.D

GLENMARK SCIENTIST , NAVIMUMBAI, INDIA

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Benzoxaboroles: A New Potential Drug for African Sleeping Sickness


Life cycle of the Trypanosoma brucei parasites, source: CDC

Human African trypanosomiasis, caused by the kinetoplastid parasite Trypanosoma brucei, affects thousands of people across sub-Saharan Africa, and is fatal if left untreated. Treatment options for this disease, particularly stage 2 disease, which occurs after parasites have infected brain tissue, are limited due to inadequate efficacy, toxicity, and the complexity of treatment regimens.

We have discovered and optimized a series of benzoxaborole- 6-carboxamides to provide trypanocidal compounds that are orally active in murine models of human African trypanosomiasis. A key feature of this series is the presence of a boron atom in the heterocyclic core structure, which is essential to the observed trypanocidal activity. We also report the in vivo pharmacokinetic properties of lead compounds from the series and selection of SCYX-7158 as a preclinical candidate.

Human African trypanosomiasis (HAT), more commonly known as African sleeping sickness, is caused by two subspecies of the kinetoplastid parasite Trypanosoma brucei, Trypanosoma brucei gambiense and Trypanosoma brucei rhodesiense, which are introduced into the victim through the bite of the tse-tse fly. Endemic across sub-Saharan Africa, tens of thousands of people are infected each year, with millions at risk of contracting the disease. If not treated early in the progression of the disease, the T. brucei parasites migrate across the blood–brain barrier and reside in brain tissue, ultimately causing neuronal death leading to a multitude of neurological symptoms including hallucinations, sleep disorders, coma and, ultimately, death.

Current treatment options for HAT are inadequate due to lack of efficacy, particularly once the parasites have migrated to the brain (stage 2 HAT), toxicity and the complexity of treatment regimens. The most commonly used treatment for stage 2 HAT, melarsoprol is highly toxic, with an estimated 5–10% drug-related mortality. A more recent drug, eflornithine, while effective against T.b. gambiense, is not effective against T.b. rhodesiense, and must be administered in a complex intravenous regime that is impractical in disease-endemic areas.

Consequently, there is an urgent need for new drugs to treat HAT and, in particular, a need for a safe, orally active drug that is effective against all known strains of T. brucei and is effective in stage 2 HAT

http://www.drugdiscoveryonline.com/doc/benzoxaboroles-african-trypanosomiasis-drug-0001