(R)-2-amino-6-[(1R,2S)-2-((2S,3S)-2-tert-butoxycarbonylamino-3-methylpentanoyloxy)-1-hydroxypropyl]-4-oxo-4,6,7,8-tetrahydro-3H-pteridine-5-carboxylic acid tert-butyl ester 、
三氟乙酸 以
二氯甲烷 为溶剂,
反应 1.0h,
以100%的产率得到(S)-2-amino-3-methylpentanoic acid (1S,2R)-2-((R)-2-amino-4-oxo-3,4,5,6,7,8-hexahydropteridin-6-yl)-2-hydroxy-1-methylethyl ester ditrifluoroacetate