(S)-2-({5-[(2-Methyl-4-oxo-3,4-dihydro-quinazolin-6-ylamino)-methyl]-pyridine-2-carbonyl}-amino)-pentanedioic acid diethyl ester 在
sodium hydroxide 作用下,
以
乙醇 为溶剂,
反应 2.0h,
以14%的产率得到(S)-2-({5-[(2-Methyl-4-oxo-3,4-dihydro-quinazolin-6-ylamino)-methyl]-pyridine-2-carbonyl}-amino)-pentanedioic acid