An Enantioselective Synthesis of (+)-Polyoxamic Acid via Phase-Transfer Catalytic Conjugate Addition and Asymmetric Dihydroxylation
作者:Yeon-Ju Lee、Yohan Park、Mi-hyun Kim、Sang-sup Jew、Hyeung-geun Park
DOI:10.1021/jo102272h
日期:2011.1.21
A new enantioselective synthetic method of (+)-polyoxamic acid is reported. (+)-Polyoxamic acid could be obtained in 7 steps with 46% overall yield from diphenylmethyl-glycineimine tert-butyl ester via an enantioselective phase-transfer conjugate addition (99% yield, 96% ee) and an asymmetric dihydroxylation (98% yield, 94% de) as the key reactions.
报道了一种新的(+)-聚草酰胺酸的对映选择性合成方法。通过对映选择性相转移共轭物的加成(99%的产率,96%ee)和不对称的二羟基化反应(98%的产率),可以从二苯基甲基-甘氨酸亚胺叔丁酯分7步以(46)的总产率获得(+)-聚乙酰胺酸。,94%de)作为关键反应。