反应详情

Instead of the starting material compound of Reference Example 166, that is, L-alanine tert-butyl ester hydrochloride, D-2-amino-n-butyric acid tert-butyl ester hydrochloride was used, further, instead of 4-chlorobenzenesulfonyl chloride, 4-chloro-2-nitrobenzenesulfonyl chloride was used for the similar procedure as with Reference Example 167 to obtain the title compound.