(2S,3S,4R,5R)-5-{2-(aminomethyl)-6-[(2,2-diphenylethyl)amino]-9H-purin-9-yl}-N-ethyl-3,4-dihydroxytetrahydro-2-furancarboxamide 、
异氰酸苄酯 在
乙醇 、
盐酸 、 silica gel 、
methanol-dichloromethane 作用下,
以
二氯甲烷 为溶剂,
反应 42.0h,
以to give the title compound as a solid (85 mg)的产率得到(2S,3S,4R,5R)-5-{2-({[(benzylamino)carbonyl]amino}methyl)-6-[(2,2-diphenylethyl)amino]-9H-purin-9-yl}-N-ethyl-3,4-dihydroxytetrahydro-2-furancarboxamide