{[2-(2-{[2-(2-Benzyloxycarbonylamino-6-oxo-1,6-dihydro-purin-9-yl)-acetyl]-[2-(9H-fluoren-9-ylmethoxycarbonylamino)-benzyl]-amino}-acetylamino)-benzyl]-[2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-acetyl]-amino}-acetic acid tert-butyl ester 在
三氟乙酸 作用下,
以
二氯甲烷 为溶剂,
以98%的产率得到{[2-(2-{[2-(2-Benzyloxycarbonylamino-6-oxo-1,6-dihydro-purin-9-yl)-acetyl]-[2-(9H-fluoren-9-ylmethoxycarbonylamino)-benzyl]-amino}-acetylamino)-benzyl]-[2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-acetyl]-amino}-acetic acid