methyl (1R,3R)-1-[(3-methoxycarbonyl-1,1-dioxo-2,5-dihydrothiophen-2-yl)methyl]-2-prop-2-enoyl-1,3,4,9-tetrahydropyrido[3,4-b]indole-3-carboxylate 以
甲苯 为溶剂,
反应 24.0h,
以85%的产率得到dimethyl (1R,12R,15R,20S)-14-oxo-3,11,12,15,16,17,20,21-octahydro-1H-yohimban-12,19-dicarboxylate