(S)-2-({5-[(2-Acetoxymethyl-4-oxo-3,4-dihydro-quinazolin-6-ylmethyl)-methyl-amino]-thiazole-2-carbonyl}-amino)-pentanedioic acid diethyl ester 在
sodium hydroxide 作用下,
以
乙醇 为溶剂,
反应 4.0h,
以71%的产率得到(S)-2-({5-[(2-Hydroxymethyl-4-oxo-3,4-dihydro-quinazolin-6-ylmethyl)-methyl-amino]-thiazole-2-carbonyl}-amino)-pentanedioic acid