作者:George A. O'Doherty、Jason A. Coral、Haibing Guo、Mingde Shan
DOI:10.3987/com-08-s(d)12
日期:——
An improved method for the synthesis of (-)-8a-epi-swainsonine has been developed with 9 fewer steps than the original route. The synthetic improvements include a two-step procedure for the preparation of benzyl 4-(furan-2-yl)-4-oxobutylcarbamate from pyrrolidin-2-one and a two-step procedure for the preparation of benzyl 3-((3aS,4S,6R,7aR)-4-(benzyloxy)tetrahydro-2,2-dimethyl-7-oxo-3aH-[1,3]dioxolo[4,5-c]pyran-6-yl)- propylcarbamate from benzyl 3-((2R,6S)-6-(benzyloxy)-3,6-dihydro-3-oxo-2H-pyran-2yl)propylcarbamate.