Ultrasound-Promoted synthesis of substituted phenanthrene-1,4-quinones; the structure of plectranthon D
作者:Zhao-rong Zhang、Felix Flachsmann、Firouz Matloubi Moghaddam、Peter Rüedi
DOI:10.1016/s0040-4039(00)76783-9
日期:1994.4
A series of tanshinone-type diterpenoids was prepared by ultrasound-promoted and Lewis acid catalyzed, highly regioselective cycloadditions of styrenes with substituted 1,4-benzoquinones as the key step.