Synthetic studies on azadirachtin (Part 3): Asymmetric synthesis of the tricyclic dihydrofuran moiety of azadirachtin
作者:Jun Ishihara、Takehiro Fukuzaki、Akio Murai
DOI:10.1016/s0040-4039(99)00040-4
日期:1999.3
An asymmetric synthesis of the tricyclic dihydrofuran moiety of azadirachtin is reported. The Diels-Alder adduct, which was catalyzed by Evans' chiral Cu-bisoxazoline complex, was easily converted to the tricyclic portion via SmI2 reductive cleavage and selective functionalization.