申请人:F. HOFFMANN-LA ROCHE & CO.
Aktiengesellschaft
公开号:EP0060445A1
公开(公告)日:1982-09-22
Racemic carboxylic acids are resolved into their enantiomers using optically active enantiomers of four lactones as resolving agents. The four lactones are 2,3-isopropylidene-ribonic acid-1,4-lactone; 1,2-isopropylidene-. glucofuranurono-3,6-lactone; 2-hydroxy-3,3-dimethyi-1,4- butyrolactone and 3,4-isopropylidene-arabino-1,5-lactone. Novel diastereoisomeric esters of the acids with the lactones are disclosed.
使用四种内酯的光学活性对映体作为分解剂,将外消旋羧酸分解成其对映体。这四种内酯分别是 2,3-异亚丙基-核糖酸-1,4-内酯、1,2-异亚丙基-葡萄糖呋喃醛酸-3,6-内酯、2-羟基-3,3-二甲基-1,4-丁内酯和 3,4-异亚丙基-阿拉伯-1,5-内酯。此外,还公开了酸与内酯的新型非对映异构酯。