bis(4-nitrophenyl) heptane-1,7-dioate 、
N-{9-[(2S,3S,4R,5S)-5-[Bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-3-hydroxy-4-(2-nitro-benzyloxymethoxy)-tetrahydro-furan-2-yl]-9H-purin-6-yl}-benzamide 在
4-二甲氨基吡啶 作用下,
以
吡啶 为溶剂,
反应 16.0h,
以72%的产率得到Heptanedioic acid (2S,3S,4S,5S)-2-(6-benzoylamino-purin-9-yl)-5-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-4-(2-nitro-benzyloxymethoxy)-tetrahydro-furan-3-yl ester 4-nitro-phenyl ester