Acetic acid 2-{(2R,3R,4R,5R)-2-[(4-methoxy-phenyl)-diphenyl-methoxymethyl]-5-{6-[2-(4-nitro-phenyl)-ethoxycarbonylamino]-purin-9-yl}-4-[2-(4-nitro-phenyl)-ethoxysulfonyloxy]-tetrahydro-furan-3-yloxy}-ethyl ester 在
对甲苯磺酸 作用下,
以
甲醇 、
氯仿 为溶剂,
反应 0.25h,
以94%的产率得到Acetic acid 2-{(2R,3R,4R,5R)-2-hydroxymethyl-5-{6-[2-(4-nitro-phenyl)-ethoxycarbonylamino]-purin-9-yl}-4-[2-(4-nitro-phenyl)-ethoxysulfonyloxy]-tetrahydro-furan-3-yloxy}-ethyl ester