Design of potential new HIV protease inhibitors: enantioconvergent synthesis of new pyrrolidin-3-ol, and pyrrolidin-3-one peptide conjugates
作者:Jérôme Courcambeck、Frédéric Bihel、Céline De Michelis、Gilles Quéléver、Jean Louis Kraus
DOI:10.1039/b101584m
日期:——
Novel potential HIV protease inhibitors are obtained by an enantioconvergent synthesis of mimicking Phe-Pro dipeptides, achieved through the coupling between Boc(L)Phe or Boc(L)Tyr and both enantiomers of syn-2-benzylpyrrolidin-3-ol and their corresponding pyrrolidin-3-one analogs. The stereochemistry and enantiopurity of intermediate 3-hydroxypyrrolidines 5a and 5b are determined through 1H NMR analysis, and through the synthesis and 19F NMR assignments of the corresponding Mosher’s esters 13a and 13b. The enantiopure compounds 5a and 5b are obtained with 100% diastereoselectivity using specific experimental reductive conditions upon Meldrum’s acid derivatives of activated aromatic amino acids.
新型潜在的HIV蛋白酶抑制剂通过模仿苯丙氨酸-脯氨酸二肽的镜像收敛合成获得,该合成通过Boc(L)Phe或Boc(L)Tyr与syn-2-苯基吡咯烷-3-醇的两种对映体及其相应的吡咯烷-3-酮类似物之间的耦合实现。中间体3-羟基吡咯烷 5a 和 5b 的立体化学和对映体纯度通过1H NMR分析以及对应莫舍酯13a和13b的合成及19F NMR分析进行确认。使用特定的还原实验条件,在活化芳香氨基酸的梅尔德鲁姆酸衍生物上获得对映体纯化合物5a和5b,且实现了100%的非对映选择性。