Fluorous Mixture Synthesis of (−)-Dictyostatin and Three Stereoisomers
作者:Yoshikazu Fukui、Arndt M. Brückner、Youseung Shin、Raghavan Balachandran、Billy W. Day、Dennis P. Curran
DOI:10.1021/ol0526827
日期:2006.1.1
[reaction: see text] A mixture of four stereoisomers whose configurations are encoded by fluorous silyl protecting groups has been prepared and converted over 22 steps to a mixture of protected dictyostatins. Demixing by fluorous HPLC followed by removal of the fluorous protecting groups (detagging) provides dictyostatin and three C6,C7 stereoisomers. Biological evaluation showed that the monoepimers