申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0079390A1
公开(公告)日:1983-05-25
A process for preparing a β-hydroxy amino acid, which comprises adsorbing aziridine-2-carboxylic acid or derivatives thereof represented by the following general formula (II)
wherein R, represents hydrogen atom, a methyl group, a substituted or unsubstituted phenyl or pyridyl group, R2 represents a hydrogen atom or a methyl group, X represents -C02H, -CO2M (wherein M represents an alkali metal or alkaline earth metal), -CO2R3 (wherein R3 represents a lower alkyl group containing 1 to 5 carbon atoms or an aralkyl group), -CONH2 or -CN, except for the case where R, and R2 both represent a hydrogen atom and X represents CO2H or C02M, onto a strongly acidic cation-exchange resin, and heating in the presence of water. Examples of the β-hydroxy amino acid include DL-serine, threonine, β-hydroxyvaline, and β-hydroxyphenylalanine.
一种制备β-羟基氨基酸的工艺,它包括吸附氮丙啶-2-羧酸或由下通式(II)代表的其衍生物
其中 R 代表氢原子、甲基、取代或未取代的苯基或吡啶基,R2 代表氢原子或甲基,X 代表 -C02H、-CO2M(其中 M 代表碱金属或碱土金属)、-CO2R3(其中 R3 代表含有 1 至 5 个碳原子的低级烷基或芳烷基)、-CONH2 或 -CN,但 R 和 R2 均代表氢原子且 X 代表 CO2H 或 C02M 的情况除外。β-羟基氨基酸的例子包括 DL-丝氨酸、苏氨酸、β-羟基缬氨酸和 β-羟基苯丙氨酸。