Total synthesis of (R)- and (S)-turmerone and (7S,9R)-bisacumol by an efficient chemoenzymatic approach
作者:Ahmed Kamal、M. Shaheer Malik、Shaik Azeeza、Shaik Bajee、Ahmad Ali Shaik
DOI:10.1016/j.tetasy.2009.05.006
日期:2009.6
An enantioselective synthesis of (R)-, (S)-turmerone and (7S,9R)-bisacumol is described. The enantiomerically pure key intermediates, a substituted butanoate ester and acid are utilized in the synthesis of both enantiomers of turmerone. The lipase catalyzed resolution studies of the acetate of bisacumol have been exploited towards the total synthesis of the naturally occurring cytotoxic sesquiterpene
(的对映选择性合成- [R ) - ,(小号)-turmerone和(7小号,9 - [R)-bisacumol进行说明。对映体纯的关键中间体,取代的丁酸酯和酸可用于合成turmerone的两种对映体。对比沙可酚乙酸酯的脂肪酶催化拆分研究已用于全合成具有高非对映选择性(94%de)的天然细胞毒性倍半萜烯((7 S,9 R)-双姜黄素)。