Catalytic asymmetric intramolecular cyclopropanation of enol silyl ether. Synthesis of the phorbol CD-ring skeleton
作者:Ryosuke Tokunoh、Hiroshi Tomiyama、Mikiko Sodeoka、Masakatsu Shibasaki
DOI:10.1016/0040-4039(96)00315-2
日期:1996.4
The optically active phorbol CD-ring skeleton was constructed using the catalytic asymmetric intramolecular cyclopropanation of enol silyl ether as a key step. Up to 92% ee was achieved using a newly modified bisoxazoline ligand.
使用烯醇甲硅烷基醚的催化不对称分子内环丙烷化作为关键步骤,构建了旋光性佛波醇CD环骨架。使用新修饰的双恶唑啉配体可实现高达92%的ee。