3'-O-(tert-butyl)dimethylsilylinosine-2'-<2,5-dichlorophenyl 2-(p-nitrophenyl)ethyl phosphate> 、
Phosphoric acid (2R,3R,4R,5R)-4-(tert-butyl-dimethyl-silanyloxy)-5-[(4-methoxy-phenyl)-diphenyl-methoxymethyl]-2-(6-oxo-1,6-dihydro-purin-9-yl)-tetrahydro-furan-3-yl ester 2-(4-nitro-phenyl)-ethyl ester; compound with triethyl-amine 以71%的产率得到[(2R,3R,4R,5R)-4-[tert-butyl(dimethyl)silyl]oxy-5-[[[(2R,3R,4R,5R)-4-[tert-butyl(dimethyl)silyl]oxy-5-[[(4-methoxyphenyl)-diphenylmethoxy]methyl]-2-(6-oxo-3H-purin-9-yl)oxolan-3-yl]oxy-[2-(4-nitrophenyl)ethoxy]phosphoryl]oxymethyl]-2-(6-oxo-3H-purin-9-yl)oxolan-3-yl] (2,5-dichlorophenyl) 2-(4-nitrophenyl)ethyl phosphate