EXO- AND DIASTEREO- SELECTIVE SYNTHESES OF HIMBACINE ANALOGS
申请人:Schering Corporation
公开号:EP1848705A2
公开(公告)日:2007-10-31
[EN] EXO- AND DIASTEREO- SELECTIVE SYNTHESES OF HIMBACINE ANALOGS<br/>[FR] SYNTHESES EXO- ET DIASTEREO- SELECTIVES D'ANALOGUES DE L'HIMBACINE
申请人:SCHERING CORP
公开号:WO2006076415A2
公开(公告)日:2006-07-20
[EN] The application discloses a novel process for the preparation of himbacine analogs useful as thrombin receptor antagonists. The process is based in part on the use of a base-promoted dynamic epimerization of a chiral nitro center. The chemistry taught herein can be exemplified by the following. [FR] L'invention concerne un procédé de préparation d'analogues de l'himbacine utiles comme antagonistes des récepteurs de la thrombine. Le procédé est fondé partiellement sur l'utilisation d'une épimérisation dynamique à promotion basique d'un centre nitro chiral. La chimie définie dans la description peut être exemplifiée par celui-ci.
A simple nitration of electrophilic alkenes with tetranitromethane in the presence of triethylamine. Synthesis of functionalized β-nitroalkenes
作者:Yulia A. Volkova、Elena B. Averina、Yuri K. Grishin、Victor B. Rybakov、Tamara S. Kuznetsova、Nikolai S. Zefirov
DOI:10.1016/j.tetlet.2011.04.012
日期:2011.6
convenient method for the preparation of functionalized β-nitroalkenes based on the nitration of α,α-di- and α,α,β-trisubstituted unsaturated aldehydes, ketones and esters with tetranitromethane in the presence of triethylamine is described. Series of substituted β-nitroalcohols and β-nitroalkenes are obtained in good yields under mild conditions.