[EN] PROCESS FOR MAKING CGRP RECEPTOR ANTAGONISTS<br/>[FR] PROCÉDÉ DE FABRICATION D'ANTAGONISTES DE RÉCEPTEURS DU CGRP
申请人:MERCK SHARP & DOHME
公开号:WO2013169348A1
公开(公告)日:2013-11-14
The disclosure encompasses a novel process for making piperidinone carboxamide indane and azainane derivatives, having less steps and improved yields as compared to previous synthetic methods for making these compounds, which are CGRP receptor antagonists, useful for the treatment of migrane. Conditions for an amide bond formation between an acid and amine include for example reacting the compounds of Formulae B (after salt break) and C with an amide coupling reagent and optionally an additive and an acid and/or a base in a non-reactive solvent.
The invention encompasses a novel process for making piperidinone carboxamide indane and azainane derivatives, which are CGRP receptor antagonists useful for the treatment of migraine.
[reaction: see text] Catalytic, enantioselective Mannich-type reactions of alpha-imino estersbearing readily removable substituents on nitrogen are described. Several N-carbamate-protected alpha-imino esters, which are readily prepared from 2-bromoglycine esters using a polymer-supported amine, reacted with silicon enolates to afford the desired adducts in high yields with high enantioselectivity
One-pot Conversion of <b><i>t</i></b>-Butyl Carbamates to Amides with Acyl Halide-Methanol Mixtures
作者:Abdesslame Nazih、Denis Heissler
DOI:10.1055/s-2002-19803
日期:——
Acyl halide-methanol mixtures are efficient reagents for the one-pot transformation of t-butyl carbamates into amides. This transformation can be carried out in the presence of a benzyloxycarbonyl group.