- A facile electrochemical synthesis of suvorexant
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A facile, scalable electrochemical method to prepare Suvorexant has been developed. Two different electrochemical routes explored. The route with the high yield and less step taken forward.
- Ghoshal, Tanay,Patel, Tarun M.,Kotturi, Sharadsrikar
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- Discovery of the dual orexin receptor antagonist [(7 R)-4-(5-chloro-1,3- benzoxazol-2-yl)-7-methyl-1,4-diazepan-1-yl][5-methyl-2-(2 H -1,2,3-triazol-2-yl)phenyl]methanone (MK-4305) for the treatment of insomnia
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Despite increased understanding of the biological basis for sleep control in the brain, few novel mechanisms for the treatment of insomnia have been identified in recent years. One notable exception is inhibition of the excitatory neuropeptides orexins A and B by design of orexin receptor antagonists. Herein, we describe how efforts to understand the origin of poor oral pharmacokinetics in a leading HTS-derived diazepane orexin receptor antagonist led to the identification of compound 10 with a 7-methyl substitution on the diazepane core. Though 10 displayed good potency, improved pharmacokinetics, and excellent in vivo efficacy, it formed reactive metabolites in microsomal incubations. A mechanistic hypothesis coupled with an in vitro assay to assess bioactivation led to replacement of the fluoroquinazoline ring of 10 with a chlorobenzoxazole to provide 3 (MK-4305), a potent dual orexin receptor antagonist that is currently being tested in phase III clinical trials for the treatment of primary insomnia.
- Cox, Christopher D.,Breslin, Michael J.,Whitman, David B.,Schreier, John D.,McGaughey, Georgia B.,Bogusky, Michael J.,Roecker, Anthony J.,Mercer, Swati P.,Bednar, Rodney A.,Lemaire, Wei,Bruno, Joseph G.,Reiss, Duane R.,Harrell, C. Meacham,Murphy, Kathy L.,Garson, Susan L.,Doran, Scott M.,Prueksaritanont, Thomayant,Anderson, Wayne B.,Tang, Cuyue,Roller, Shane,Cabalu, Tamara D.,Cui, Donghui,Hartman, George D.,Young, Steven D.,Koblan, Ken S.,Winrow, Christopher J.,Renger, John J.,Coleman, Paul J.
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experimental part
p. 5320 - 5332
(2010/10/20)
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- Substituted diazepan orexin receptor antagonists
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The present invention is directed to substituted diazepan compounds which are antagonists of orexin receptors, and which are useful in the treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which orexin receptors are involved.
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Page/Page column 15
(2008/12/05)
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