The highly stereoselective alkylation (% de=99.6 to 97.6) of a new chiral glycine enolate synthon derived from D-2-phenylglycinol is described. Deprotection of the alkylation adducts in a one-pot three-step procedure provides the ethyl ester hydrochloride salts of the corresponding α-amino acids with no attending racemization.
描述了衍生自D-2-苯基甘
氨醇的新的手性甘
氨酸烯醇式合成子的高度立体选择性烷基化(%de = 99.6至97.6)。用一锅三步法对烷基化加合物进行脱保护,即可得到相应的
α-氨基酸的
乙酯盐酸盐,而不会发生外消旋作用。