Asymmetric Total Synthesis of Cladosporin and Isocladosporin
作者:Huaiji Zheng、Changgui Zhao、Bowen Fang、Peng Jing、Juan Yang、Xingang Xie、Xuegong She
DOI:10.1021/jo300805n
日期:2012.7.6
The first asymmetric total syntheses of cladosporin and isocladosporin were accomplished in 8 steps with 8% overall yield and 10 steps with 26% overall yield, respectively. The relative configuration of isocladosporin was determined via this totalsynthesis.
improved synthetic route which led us to produce this potent natural product in a gram scale. Conversion of the undesired diastereomer to desired one via Mitsunobu inversion of secondary alcohol and carbon monoxide insertion reaction towards the construction of isocoumarin unit are the key features of the present synthesis.