2-chloro-6-benzyloxy-9-[2'-deoxy-β-D-erythropentofuranosyl]purine diacetate 、 C
31H
43NO
2Si
2 在
palladium diacetate
caesium carbonate 、
R-(+)-1,1'-联萘-2,2'-双二苯膦 作用下,
以
甲苯 为溶剂,
以82%的产率得到[(2R,3S,5R)-3-acetyloxy-5-[2-[[3,4-bis[[tert-butyl(dimethyl)silyl]oxy]-7-methylbenzo[a]anthracen-1-yl]amino]-6-phenylmethoxypurin-9-yl]oxolan-2-yl]methyl acetate