作者:David K. Mycock、Paul A. Glossop、William Lewis、Christopher J. Hayes
DOI:10.1016/j.tetlet.2012.10.076
日期:2013.1
A formal synthesis of (+)-lactacystin has been completed from trans-4-hydroxyproline, using a diastereoselective enolate acylation reaction as a key step. Diastereoselectivity was seen to vary as a function of the steric bulk of the C4-O-protecting group, and contrary to expectations, the best diastereoselectivities were obtained when the small methyl carbonate protecting group was used. The formal
使用非对映选择性烯酸酯酰化反应作为关键步骤,已由反式-4-羟基脯氨酸完成了(+)-lactacystin的正式合成。观察到非对映选择性随C4-O-保护基的空间体积而变化,并且与预期相反,当使用小的碳酸甲酯保护基时,获得了最佳的非对映选择性。然后通过拦截Shibasaki的路线,通过碳酸甲酯脱保护,脱水,3-吡咯啉至3-吡咯啉酮氧化,氢化和N -CO 2 Me脱保护,来完成正式合成。