Process for the preparation of chiral 3,4-epoxybutyric acid and the salt thereof
申请人:——
公开号:US06232478B1
公开(公告)日:2001-05-15
The present invention relates to a process for the preparation of chiral 3,4-epoxybutyric acid expressed by formula (1) and the salt thereof, wherein (S)-3-activated-hydroxybutyrolactone expressed by formula (2) is subjected to a ring-opening reaction to obtain 4-hydroxy-3-activated hydroxybutyric acid expressed by formula (3), which is subjected to an epoxydation with an inversion of the chiral center.
Resolution of a chiral ester by lipase-catalyzed transesterification with polyethylene glycol in organic media
作者:J. Shield Wallace、Kristin B. Reda、Mark E. Williams、Cary J. Morrow
DOI:10.1021/jo00298a030
日期:1990.5
An Efficient, Highly Enantioenriched Route to <scp>l</scp>-Carnitine and α-Lipoic Acid via Hydrolytic Kinetic Resolution
作者:D. Bose、Liyakat Fatima、Salla Rajender
DOI:10.1055/s-2006-942363
日期:2006.6
A general and practical approach for the synthesis of C-4 chiral building blocks using Jacobsen's hydrolytic kinetic resolution technique to resolve terminal epoxides and diols in high enantiomeric excess and excellent yields is described. The utilization of these building blocks for the synthesis of biologically important natural products L-carnitine and α-lipoic acid is illustrated.