Regiospecific ring-opening reactions of β-aziridinyl α,β-enoates with acids: application to the stereoselective synthesis of a couple of diastereoisomeric (E )-alkene dipeptide isosteres from a single β-aziridinyl α,β-enoate and to the convenient preparation of amino alcohols bearing α,β-unsaturated ester groups
作者:Hirokazu Tamamura、Masaki Yamashita、Yutaka Nakajima、Kyoko Sakano、Akira Otaka、Hiroaki Ohno、Toshiro Ibuka、Nobutaka Fujii
DOI:10.1039/a904671b
日期:——
Regio- and stereo-selective ring-opening reactions of N-(2,4,6-trimethylphenylsulfonyl)-γ,δ-cis- or -trans-γ,δ-epimino (E)-α,β-enoates with acids such as methanesulfonic acid (MSA) or trifluoroacetic acid (TFA) have been found. These ring-opening reactions are useful for the stereoselective synthesis of a couple of diastereomeric (E)-alkene dipeptide isosteres from a single substrate of γ,δ-epimino (E)-α,β-enoate, and for the convenient preparation of δ-aminated γ-hydroxy α,β-enoates.
已经发现N-(2,4,6-三甲基苯磺酰)-γ,δ-cis-或-trans-γ,δ-表胺(E)-α,β-烯酸酯与酸如甲磺酸(MSA)或三氟乙酸(TFA)的区域和立体选择性开环反应。这些开环反应对于使用γ,δ-表胺(E)-α,β-烯酸酯单一底物合成一对非对映体(E)-烯二肽同分异构体,以及方便制备δ-氨基γ-羟基α,β-烯酸酯具有重要意义。