脲嘧啶-5-羧酸 、
2-amino-6-(2-(p-nitrophenyl)ethyloxy)-9-[2'-deoxy-β-D-erythropentofuranosyl]purine diacetate 在
N,N'-二环己基碳二亚胺 、
lithium chloride 作用下,
以
四氢呋喃 为溶剂,
以42%的产率得到Acetic acid (2R,3S,5R)-2-acetoxymethyl-5-{2-[(2,4-dioxo-1,2,3,4-tetrahydro-pyrimidine-5-carbonyl)-amino]-6-[2-(4-nitro-phenyl)-ethoxy]-purin-9-yl}-tetrahydro-furan-3-yl ester