Chemistry of insect antifeedants from Azadirachta indica(part 12): use of silicon as a control element in the synthesis of a highly functionalized decalin fragment of azadirachtin
作者:Hartmuth C. Kolb、Steven V. Ley、Alexandra M. Z. Slawin、David J. Williams
DOI:10.1039/p19920002735
日期:——
A diastereoselective synthesis of a highly functionalized decalinfragment 61 of the insectantifeedantazadirachtin 1 is described. An intramolecular Diels–Alder reaction of triene 15 and subsequent intramolecular aldol reaction were employed to assemble the basic carbon skeleton. A high degree of stereocontrol in the cycloaddition step was achieved by using a dimethyl(phenyl)silyl group to effect