Asymmetric Syntheses via Heterocyclic Intermediates; XXVII1. Enantioselective Synthesis of [2-Methoxyethoxymethyl-Protected] (R)- Homoserine Methyl Esters and (R)-α-Methyl-homoserine Methyl Esters and of the Corresponding α-Amino-γ-lactones by the Bis-lactim Ether Method

Abstract

An asymmetric synthesis of various (R)-homoserine methyl esters and (R)-α-methylhomoserine methyl esters starting from the bis-lactim ethers of cyclo-(L-Val-Gly) and cyclo-(L- Val-Ala) and oxiranes is described.