(S)-2-{4-[4-(2,6-Diamino-5-nitro-pyrimidin-4-ylamino)-3-oxo-butylsulfanyl]-benzoylamino}-pentanedioic acid diethyl ester 在
sodium dithionite 作用下,
以
1,4-二氧六环 为溶剂,
生成 (S)-2-{4-[3-Oxo-4-(2,5,6-triamino-pyrimidin-4-ylamino)-butylsulfanyl]-benzoylamino}-pentanedioic acid diethyl ester