Process for the Preparation of an Orexin Receptor Antagonist
申请人:Campeau Louis-Charles
公开号:US20110165632A1
公开(公告)日:2011-07-07
The present invention is directed to processes for preparing a pyridyl piperidine compound which is an antagonist of orexin receptors, and which is useful in the treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved.
The present invention is. directed to pyridyl piperidine compounds of formula (I) 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.
Process for the preparation of an orexin receptor antagonist
申请人:Campeau Louis-Charles
公开号:US08674093B2
公开(公告)日:2014-03-18
The present invention is directed to processes for preparing a pyridyl piperidine compound which is an antagonist of orexin receptors, and which is useful in the treatment or prevention of neurological and psychiatric disorders and diseases in which orexin receptors are involved.
Convergent Kilogram-Scale Synthesis of Dual Orexin Receptor Antagonist
作者:Mélina Girardin、Stéphane G. Ouellet、Danny Gauvreau、Jeffrey C. Moore、Greg Hughes、Paul N. Devine、Paul D. O’Shea、Louis-Charles Campeau
DOI:10.1021/op3002678
日期:2013.1.18
MK-6096 is an orexin receptor antagonist in clinical trials for the treatment of insomnia. Herein we describe its first kilogram-scale synthesis. Chirality on the a-methylpiperidine core was introduced in a biocatalytic transamination using a three-enzyme system with excellent enantioselectivity (>99% ee). Low diastereoselectivity of the lactam reduction was overcome by development of a camphor sulfonic acid salt formation and dr upgrade. A chemoselective O-alkylation with 5-fluoro-2-hydroxypyridine was optimized and developed. Overall, 1.2 kg of MK-6069 was prepared in nine steps and 13% overall yield.