7-bromo-6-(tert-butyldimethylsilanyloxymethyl)-6H-benzo[f][1,3]dioxolo[4',5':4,5]benzo[1,2,3-cd]indol-5-one 、
O6-benzyl-3',5'-bis-O-(tert-butyldimethylsilyl)-2'-deoxyguanosine 在
tris-(dibenzylideneacetone)dipalladium(0) 、
caesium carbonate 、
4,5-双二苯基膦-9,9-二甲基氧杂蒽 作用下,
以
甲苯 为溶剂,
反应 6.5h,
以75%的产率得到7-{6-benzyloxy-9-[4-(tert-butyldimethylsilyloxy)-5-(tert-butyldimethylsilyloxymethyl)-tetrahydrofuran-2-yl]-9H-purin-2-ylamino}-6-(tert-butyldimethylsilyloxymethyl)-6H-benzo[f][1,3]dioxolo[4',5':4,5]benzo[1,2,3-cd]indol-5-one