Stereospecific synthesis of chiral tertiary alkyl-aryl ethers via Mitsunobu reaction with complete inversion of configuration
作者:Yao-Jun Shi、David L. Hughes、James M. McNamara
DOI:10.1016/s0040-4039(03)00728-7
日期:2003.4
Mitsunobu reaction of chiral tertiary alcohol (S)-2 with phenol3 provides the desired ether (R)-1 in moderate yields at elevated temperatures (80–100°C). The SN2 displacement pathway is evident by complete inversion of the (S)-alcohol to (R)-ether.
手性叔醇(S)-2与苯酚3的Mitsunobu反应在高温(80-100°C)下以中等收率提供所需的醚(R)-1。通过将(S)-醇完全转化为(R)-醚,可以明显看出S N 2的置换途径。
Process for the preparation of optically pure isomers of 2-(4-hydroxy phenoxy)-2-methyl-butyric acid methyl ester
申请人:Kumar Rejender Potlapally
公开号:US20060194980A1
公开(公告)日:2006-08-31
The invention provides a process for preparing R-(+)-2-(4-hydroxyphenoxy)-2-methyl-butyric acid methyl ester of the formula (1):
Various embodiments and variants are provided.
The invention also provides a process for preparing S-(−)-2-(4-hydroxyphenoxy)-2-methyl-butyric acid methyl ester of the formula (II)
Various embodiments and variants are provided.
[EN] NOVEL ISOXAZOLE COMPOUNDS HAVING PPAR AGONIST ACTIVITY<br/>[FR] NOUVEAUX COMPOSES ISOXAZOLE POSSEDANT UNE ACTIVITE D'AGONISTE PPAR
申请人:REDDYS LAB LTD DR
公开号:WO2006042245A1
公开(公告)日:2006-04-20
The present invention relates to novel isoxazole compounds of formula (I) having (PPAR) agonist activity, pharmaceutical compositions containing such compounds and methods for their use.