An improved chemoenzymatic synthesis of both enantiomers of trans-cyclopentane-1,2-diamine
作者:Carmen Peña、Javier González-Sabín、Francisca Rebolledo、Vicente Gotor
DOI:10.1016/j.tetasy.2008.02.012
日期:2008.4
An improved chemoenzymatic protocol for the synthesis of both enantiomers of trans-cyclopentane-1,2-diamine is described. The key part of the strategy relies on the synthesis and subsequent enzymatic resolution of its racemic precursor trans-N,N-diallylcyclopentane-1,2-diamine in which the primary amino group is masked as a tertiary diallylamine. Lipase B from Candida antarctica (CAL-B) catalyzes the
描述了用于合成反式-环戊烷-1,2-二胺的两种对映体的改进的化学酶学方案。该策略的关键部分依赖于合成及其消旋前体的随后的酶促拆分反式- ñ,Ñ其中伯氨基被掩蔽为叔二烯丙基胺-diallylcyclopentane -1,2-二胺。来自南极假丝酵母的脂肪酶B (CAL-B)以极好的对映选择性(E > 200)催化该二胺的N-酰化。在生物转化中获得的对映体富集的化合物(ee⩾97%)的进一步脱甲酰化和衍生化获得了各种取代的衍生物。