中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | (4S,9aS)-4-(3,4-dimethoxyphenyl)hexahydro-1H-quinolizin-2(6H)-one | 221664-11-5 | C17H23NO3 | 289.375 |
Based on a higly diastereoselective Mannich reaction of N-(3,4-dimethoxybenzylidene) 2,3,4,6- tetra-O-pivaloyl-β -D-galactopyranosylamine 3 with the Danishefsky diene the quinolizidine alkaloid lasubin II was synthesized in enantiomerically pure form in six steps.