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Home » FDA 2013 » FDA Approves Osphena,Ospemifene for Postmenopausal Women Experiencing Dyspareunia

FDA Approves Osphena,Ospemifene for Postmenopausal Women Experiencing Dyspareunia

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Ospemifene.svg

Ospemifene
CAS Number: 128607-22-7

Molecular Formula: C24H23ClO2
Molecular Weight: 378.89 g.mol-1

February 26, 2013 — The U.S. Food and Drug Administration today approved Osphena (ospemifene) to treat women experiencing moderate to severe dyspareunia (pain during sexual intercourse), a symptom of vulvar and vaginal atrophy due to menopause.

Dyspareunia is a condition associated with declining levels of estrogen hormones during menopause. Less estrogen can make vaginal tissues thinner, drier and more fragile, resulting in pain during sexual intercourse.

Osphena, a pill taken with food once daily, acts like estrogen on vaginal tissues to make them thicker and less fragile, resulting in a reduction in the amount of pain women experience with sexual intercourse.

“Dyspareunia is among the problems most frequently reported by postmenopausal women,” said Victoria Kusiak, M.D., deputy director of the Office of Drug Evaluation III in the FDA’s Center for Drug Evaluation and Research. “Osphena provides an additional treatment option for women seeking relief.”

Osphena’s safety and effectiveness were established in three clinical studies of 1,889 postmenopausal women with symptoms of vulvar and vaginal atrophy. Women were randomly assigned to receive Osphena or a placebo. After 12 weeks of treatment, results from the first two trials showed a statistically significant improvement of dyspareunia in Osphena-treated women compared with women receiving placebo. Results from the third study support Osphena’s long-term safety in treating dyspareunia.

Common side effects reported during clinical trials included hot flush/flashes, vaginal discharge, muscle spasms, genital discharge and excessive sweating.

Osphena is marketed by Florham Park, N.J.-based Shionogi, Inc.

Ospemifene, FC-1271a
2-[4-[4-Chloro-1,2-diphenyl-1(Z)-butenyl]phenoxy]ethanol
Orion Corp. (Originator), Hormos (Codevelopment)
Bone Diseases, Treatment of, ENDOCRINE DRUGS, Gynecological Disorders, Treatment of , Hormone Replacement Therapy, METABOLIC DRUGS, Treatment of Osteoporosis, Treatment of Postmenopausal Syndrome , Selective Estrogen Receptor Modulators (SERM)
  • Shionogi Files a New Drug Application for Ospemifene Oral Tablets 60mg for the Treatment of Vulvar and Vaginal Atrophy – May 9, 2012
credit chemdrug
The condensation of desoxybenzoin (I) with 2-(benzyloxy)ethyl bromide (II) by means of aqueous 48% NaOH containing triethylbenzylammonium chloride (TEBAC) gives 4-(benzyloxy)-1,2-diphenyl-1-butanone (III), which by reaction with the Grignard reagent (IV) – prepared from 4-(tetrahydropyranyloxy)phenyl bromide (V) and Mg in THF – yields the triphenylbutanol derivative (VI). Elimination of the THP-protecting group of compound (VI) by means of H2SO4 in ethanol/water at room temperature affords the triphenylbutanol derivative (VII), which is debenzylated by hydrogenation with H2 over Pd/C in ethanol to provide the butane-1,4-diol derivative (VIII). Cyclization of the butane-1,4-diol (VIII) by means of H2SO4 in hot ethanol/water gives 2-(4-hydroxyphenyl)-2,3-diphenyltetrahydrofuran (IX), which is treated with 48% HBr in refluxing AcOH to yield a mixture of (E)- and (Z)-4-(4-hydroxyphenyl)-3,4-diphenyl-3-buten-1-ol (X), which is separated by chemical work up. The phenolic OH group of the desired (Z)-isomer (X) is condensed with 2-(benzyloxy)ethyl bromide (II) by means of NaOH and tetrabutylammonium bromide in refluxing toluene/ water to afford the benzyloxyethyl ether (XII). Reaction of the aliphatic OH group of ether (XII) with PPh3 and CCl4 in acetonitrile provides the corresponding chloro derivative (XIII), which is finally debenzylated with H2 over Pd/C in ethyl acetate/ethanol.
Sorbera, L.A.; Castar, J.; Bay
Ospemifene. Drugs Fut 2004, 29, 1, 38

3 Comments

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  2. Cindy says:

    Just started Osphena today, tried vagifem and had horrible shooting pains in my legs and breasts so stopped it… Doc said because I am 7 years post menopausal my body is sensitive to the estrogen and I should not take it due to the higher risk of stroke or heart attack. Since Osphena is not a hormone directly, I am trying that. Will see the doc in a month, sooner if there are ANY side effects.

  3. yash says:

    i want to buy osphena drugs for personal use, please advise.

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DR ANTHONY CRASTO

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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 GLENMARK PHARMACEUTICALS LTD, Research Centre as Principal Scientist, Process Research (bulk actives) at Mahape, Navi Mumbai, India. Total Industry exp 29 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 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 29 year tenure till date Aug 2016, Around 30 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, 25 Lakh plus views on dozen plus blogs, 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 13 lakh plus views on New Drug Approvals Blog in 212 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

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