中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
1-(1-乙氧基乙氧基)-4-碘丁烷 | tetramethylene iodohydrin EE ether | 78647-37-7 | C8H17IO2 | 272.126 |
—— | 6-(1-ethoxy-ethoxy)-hex-1-yne | 67448-61-7 | C10H18O2 | 170.252 |
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.