4-[2-(2-Ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purin-8-yl]-4-hydroxypiperidine-1-carboxylic acid tert-butyl ester 、
三氟乙酸 在
甲醇 、
ammonia methanol 作用下,
以
二氯甲烷 为溶剂,
反应 3.0h,
以affording 4-[2-(2-Ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purin-8-yl]piperidin-4-ol (1.1 g, quant.)的产率得到4-[2-(2-ethylbenzoimidazol-1-yl)-9-methyl-6-morpholin-4-yl-9H-purin-8-yl]piperidin-4-ol