Acetic acid (2R,3S,5R)-2-acetoxymethyl-5-{6-[3-(3-phenyl-ureido)-propyl]-purin-9-yl}-tetrahydro-furan-3-yl ester 在
sodium methylate 作用下,
以
甲醇 为溶剂,
以72%的产率得到1-{3-[9-((2R,4S,5R)-4-Hydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-9H-purin-6-yl]-propyl}-3-phenyl-urea