PROCESS FOR PRODUCING HYDROXYAMINO ACID DERIVATIVE

摘要

A process for efficiently producing a hydroxyamino acid derivative,especially an optically active isomer thereof.The process,which is for producing a hydroxyamino acid derivative represented by the formula(I):(I)or a salt thereof,is characterized by subjecting in a solvent an amino acid derivative represented by the formula(II):(II)to a reaction for selectively reducing the pendant terminal carboxyl group and then optionally subjecting the reaction product to a reaction for eliminating the amino−protecting group or a reaction for forming a salt of the amino or carboxyl group.