Synthesis of (−)-(<i>S</i>,<i>S</i>)-clemastine by Invertive N → C Aryl Migration in a Lithiated Carbamate
作者:Anne M. Fournier、Robert A. Brown、William Farnaby、Hideki Miyatake-Ondozabal、Jonathan Clayden
DOI:10.1021/ol100627c
日期:2010.5.21
The first enantioselective synthesis of the antihistamineagent clemastine, as its (S,S)-stereoisomer, has been achieved by ether formation between a proline-derived chloroethylpyrrolidine and an enantiomerically enriched tertiary alcohol. The tertiary alcohol was formed from the carbamate derivative of α-methyl-p-chlorobenzyl alcohol by invertive aryl migration on lithiation. The (S,S)-stereochemistry
Disclosed herein are substituted benzhydrylethers of Formula I, processes of preparation thereof, pharmaceutical compositions thereof, and methods of their use thereof.
Disclosed herein are substituted benzhydrylethers of Formula (I), processes of preparation thereof, pharmaceutical compositions thereof, and methods of their use therof.