3',5'-bis-O-(tert-butyldimethylsilyl)-2'-deoxyguanosine 、
2-硝基苯硫氯 在
吡啶 作用下,
反应 18.0h,
以55%的产率得到9-[(2R,4S,5R)-4-(tert-Butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-2-(2-nitro-phenylsulfanylamino)-1,9-dihydro-purin-6-one