[EN] PIPERIDINE AND MORPHOLINE RENIN INHIBITORS<br/>[FR] PIPÉRIDINE ET MORPHOLINE INHIBITEURS DE LA RÉNINE
申请人:VITAE PHARMACEUTICALS INC
公开号:WO2007117560A3
公开(公告)日:2007-12-06
SEROTONERGIC BENZOTHIOPHENES
申请人:ELI LILLY AND COMPANY
公开号:EP1204660B1
公开(公告)日:2004-10-20
Lithiated Benzothiophenes and Benzofurans Require 2-Silyl Protection to Avoid Anion Migration
作者:Marvin M. Hansen、Marcella T. Clayton、Alexander G. Godfrey、John L. Grutsch Jr.、Sandra S. Keast、Dan T. Kohlman、Andreea R. McSpadden、Steven W. Pedersen、Jeffrey A. Ward、Yao-Chang Xu
DOI:10.1055/s-2004-825609
日期:——
2-Trimethylsilyl protection of benzothiophenes and benzofurans prevents anion migration to the 2-position when lithiated species are formed. These lithiated benzothiophenes and benzofurans provide superior results in additions to piperidones. Deprotection is conveniently achieved under acidic conditions. Direct C-7 metalation of benzothiophene is enabled by 2-triisopropylsilyl protection at C-2.