Chemistry of insect antifeedants from Azadirachta indica (Part 10): synthesis of a highly functionalised decalin fragment of azadirachtin.
作者:Hartmuth C. Kolb、Steven V. Ley
DOI:10.1016/0040-4039(91)80785-5
日期:1991.10
The synthesis of a highlyfunctionaliseddecalinfragment (2) of the antifeedantazadirachtin (1) is described. A silyl group was employed to control the stereoselectivity of several key steps and to introduce C3 hydroxyl functionality. A novel ring contraction strategy afforded the inherent hemiketal unit.