First synthesis and characterization of SRR/RSS-Ezetimibe
作者:Yun Ren、RenJun Li、Yong Deng、Mei Guan、Yong Wu、Li Hai
DOI:10.1016/j.tetlet.2013.09.049
日期:2013.11
The two stereoisomers, SRR-Ezetimibe 2 and RSS-Ezetimibe 3 are related substances of the cholesterol absorption inhibitor drug Ezetimibe 1. Herein, we present an efficient and practical synthesis approach to deliver these two stereoisomers for the first time, and a proof of SRR-Ezetimibe 2 by single-crystal X-ray analysis. Our research will be of immense help for organic chemists to study the impurity
Provided are intermediates useful for the synthesis of hydroxyl-alkyl substituted azetidinones, processes of their preparation, and processes for the synthesis of certain hydroxyl-alkyl substituted azetidinones. Also provided are processes for the synthesis of 1-(4-fluorophenyl)-3(R)-[3-(4-fluorophenyl)-3(S)-hydroxypropyl]-4(S)-(4-hydroxyphenyl)-2-azetidinone, or ezetimibe.
[EN] PROCESSES FOR THE SYNTHESIS OF AZETIDINONE<br/>[FR] PROCÉDÉS DE SYNTHÈSE DE L'AZÉTIDINONE
申请人:TEVA PHARMA
公开号:WO2007120824A2
公开(公告)日:2007-10-25
[EN] Provided are intermediates useful for the synthesis of hydroxyl-alkyl substituted azetidinones, processes of their preparation, and processes for the synthesis of certain hydroxyl-alkyl substituted azetidinones. Also provided are processes for the synthesis ofl-(4-fluorophenyl)-3(R)-[3-(4-fluorophenyl)-3(S)- hydroxypropyl]-4(S)-(4-hydroxyphenyl)-2-azetidinone, or ezetimibe. [FR] L'invention porte sur des internmédiaires utiles dans la synthèse d'azétidinones substituées par hydroxyle-alkyle, sur leurs procédés de préparation et sur des procédés de synthèse de certaines azétidinones substituées par hydroxyle-alkyle. L'invention porte notamment sur des procédés de synthèse de ofl-(4-fluorophényl)-3(R)-[3-(4-fluorophényl)-3(S)- hydroxypropyl]-4(S)-(4-hydroxyphényl)-2-azétidinone ou ézétimibe.