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Zucapsaicin for osteoarthritis



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Chemical structure of zucapsaicin

Zucapsaicin (珠卡赛辛)

cis-Capsaicin; (Z)-Capsaicin

Zucapsaicin; Civamide; Cis-Capsaicin; 25775-90-0; (Z)-Capsaicin; (Z)-N-(4-Hydroxy-3-methoxybenzyl)-8-methylnon-6-enamide;


CAS No. 25775-90-0

MF C18H27NO3
Molecular Weight: 305.41188 g/mol




A medication used to treat osteoarthritis of the knee and other neuropathic pain.TRPV1 CHANNEL AGONIST




Zucapsaicin (Civanex) is a medication used to treat osteoarthritis of the knee and other neuropathic pain. It is applied three times daily for a maximum of three months. It reduces pain, and improves articular functions. It is the cis-isomer of capsaicin. Civamide, manufactured by Winston Pharmaceuticals, is produced in formulations for oral, nasal, and topical use (patch and cream).[1]

Zucapsaicin has been tested for treatment of a variety of conditions associated with ongoing nerve pain. This includes herpes simplex infections; cluster headaches and migraine; and knee osteoarthritis.[2]


Civanex (zucapsaicin) cream is a TRPV-1 modulator in development for the treatment of signs and symptoms of osteoarthritis of the knee.
Zucapsaicin, the cis-isomer of the natural product capsaicin, is a
topical analgesic that was initially developed by Winston Pharmaceuticals
and approved in Canada in July 2010 for the treatment of
severe pain in adults with osteoarthritis of the knee.

Bronson, J.; Dhar, M.; Ewing, W.; Lonberg, N. In Annual Reports in MedicinalChemistry; John, E. M., Ed.; Academic Press, 2011; Vol. 46, p 433.

The advantagesof zucapsaicin compared with naturally-occurring capsaicin, are reported to be a lesser degree of local irritation (stinging, burning,

erythema) in patients and a greater degree of efficacy in preclinical
animal models of pain.

Bernstein, J. E. U.S. 5063060, 1991.
Bernstein, J. E. U.S. 20050084520 A1, 2005.

The analgesic action of both
zucapsaicin and capsaicin is mediated through the transient receptor
potential vanilloid type 1 (TRPV1) channel, a ligand-gated ion
channel expressed in the spinal cord, brain, and localized on neurons
in sensory projections to the skin, muscles, joints, and

Westaway, S. M. J. Med. Chem. 2007, 50, 2589.

The scale preparation of zucapsaicin likely parallels the original
approach described by Gannett and co-workers involving the
coupling of vanillylamine with (Z)-8-methylnon-6-enoyl chloride.

Gannett, P. M.; Nagel, D. L.; Reilly, P. J.; Lawson, T.; Sharpe, J.; Toth, B. J. Org.Chem. 1988, 53, 1064.

Orito and co-workers elaborated this original approach in
an effort to prepare both capsaicin and zucapsaicin on gram-scale,

Kaga, H.; Miura, M.; Orito, K. J. Org. Chem. 1989, 54, 3477.








Janusz, John M.; Buckwalter, Brian L.; Young, Patricia A.; LaHann, Thomas R.; Farmer, Ralph W.; et al. Journal of Medicinal Chemistry, 1993 , vol. 36, # 18 p. 2595 – 2604

Journal of Organic Chemistry, , vol. 53, # 5 p. 1064 – 1071

Chemical structure of zucapsaicin
Systematic (IUPAC) name
Clinical data
Trade names Civanex
Routes of
CAS Number 25775-90-0
ATC code M02AB02
PubChem CID: 1548942
ChemSpider 1265956
UNII 15OX67P384
Synonyms Civamide; (Z)-Capsaicin; cis-Capsaicin
Chemical data
Formula C18H27NO3
Molecular mass 305.41188 g/mol





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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 GLENMARK PHARMACEUTICALS LTD, Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 30 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, Dr T.V. Radhakrishnan and Dr B. K. Kulkarni, 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 30 year tenure till date Dec 2017, 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 9 million plus hits on Google, 2.5 lakh plus connections on all networking sites, 50 Lakh plus views on dozen plus blogs, 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 19 lakh plus views on New Drug Approvals Blog in 216 countries...... , He appreciates the help he gets from one and all, Friends, Family, Glenmark, Readers, Wellwishers, Doctors, Drug authorities, His Contacts, Physiotherapist, etc

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