N-叔丁氧酰基-O-烷基-L-酪氨酸甲酯的合成工艺研究

以L-酪氨酸为原料,经由羧基、氨基保护后,对其侧链酚羟基进行修饰,得到两个未见文献报道酪氨酸的衍生物Ia,Ib,其总收率分别为74.5%,75.6%,合成方法简便,成本低廉,具有较高的商业应用价值.化合物结构经MS,IR,1H NMR和13C NMR的验证.

Abstract：

The carboxyl and amino groups of L-tyrosine were protected with methyl esterification for the carboxyl group and with tert-butyloxy carbonylation for the amino group, and then the hydroxyl group was alkylated with n-butyl bromide and methyl-bromoacetate alternatively. Thus two new L-tyrosine derivatives (Ia and Ib) were obtained with an overall yield 74.5% and 75.6%, respectively. The established synthesis technology of L-tyrosine derivatives has advantages over other known ways for its facile operation and low cost. Therefore it has a promising prospect of commercial application. The chemical structures of the compounds were confirmed by MS, IR, 1H NMR and 13C NMR.

Investigation of the Technology for the Preparation of Methyl N-tert-butoxyl-carbonyl-O-alkyl-L-tyrosinate