作者:Kasim Popaj、Manfred Hesse
DOI:10.1002/1522-2675(20010131)84:1<180::aid-hlca180>3.0.co;2-f
日期:2001.1.31
The syntheses of four macrocyclic spermine alkaloids, (±)-budmunchiamine A – C (1a – c) and (±)-budmunchiamine L4 (1), were accomplished by Michael addition of spermine to the α,β-unsaturated esters 3a – d, followed by cyclization of the resulting α,ω-tetraamino esters 4a – d with triethoxyantimony; N-methylation of the amino lactams 6a – c yielded the budmunchiamines A – C (1a – c).
四种大环精胺生物碱 (±)-budmunchiamine A – C (1a – c) 和 (±)-budmunchiamine L4 (1) 的合成是通过 Michael 将精胺添加到 α,β-不饱和酯 3a – d 中完成的,然后用三乙氧基锑环化所得的 α,ω-四氨基酯 4a-d;氨基内酰胺 6a – c 的 N-甲基化产生 budmunchiamines A – C (1a – c)。