Stereoselective Syntheses of Four Diastereomers of 3,9,12-Trihydroxycalamenene via a Benzobicyclo[3.3.1] Intermediate
作者:Yongquan Sun、Binxun Yu、Xiaolei Wang、Shibing Tang、Xuegong She、Xinfu Pan
DOI:10.1021/jo1008349
日期:2010.6.18
The highly stereoselective syntheses of four diastereomers of natural 3,9,12-trihydroxycalamenene are described. The syntheses highlight the utility of an unusual framework of benzobicyclo[3.3.1] lactones, which were accomplished via an intramolecular Friedel−Crafts-type Michael addition of α,β-unsaturated lactones.
描述了天然的3,9,12-三羟基cal菁烯的四个非对映异构体的高度立体选择性合成。合成突出显示了苯并双环[3.3.1]内酯的不寻常骨架的效用,该骨架是通过分子内弗瑞德-克来福特型迈克尔加成的α,β-不饱和内酯来实现的。