p. 2275 - 2284
(2010/05/17)2-Nitrobenzenesulfonyl chloride
2-{[(dimethylamino)methylidene]amino}-3,5-dihydro-7-iodo-3-[(pivaloyloxy)methyl]-4H-pyrrolo[3,2-d]pyrimidin-4-one
9-[5',5'-difluoro-5'-(diethylphosphono)pent-1'-ynyl]-2-N-(N,N-dimethylaminomethylidene)-7-N-(2-nitrophenyl)sulfonyl-1N-(pivaloyloxy)methyl-9-deazaguanine
9-[7',7'-difluoro-7'-(diethylphosphono)hept-1'-ynyl]-2-N-(N,N-dimethylaminomethylidene)-7-N-(2-nitrophenyl)sulfonyl-1N-(pivaloyloxy)methyl-9-deazaguanine
9-[8',8'-difluoro-8'-(diethylphosphono)oct-1'-ynyl]-2-N-(N,N-dimethylaminomethylidene)-7-N-(2-nitrophenyl)sulfonyl-1N-(pivaloyloxy)methyl-9-deazaguanine
9-[4',4'-difluoro-4'-(diethylphosphono)but-1'-ynyl]-2-N-(N,N-dimethylaminomethylidene)-7-N-(2-nitrophenyl)sulfonyl-1N-(pivaloyloxy)methyl-9-deazaguanine