Cytidine, 2′-deoxy-3′-de(phosphinicooxy)-2′-fluoro-5-methylcytidylylmethylene(methylimino)-(3′→5′)-2′-deoxy-2′-fluoro-5-methyl-

Uridine, 2′-deoxy-3′-de(phosphinicooxy)-2′-fluoro-5-methyluridylylmethylene(methylimino)-(3′→5′)-2′-deoxy-2′-fluoro-5-methyl-

Guanosine, 3′-de(phosphinicooxy)-2′-O-methylguanylylmethylene(methylimino)-(3′→5′)-2′-deoxy-2′-fluoro-

Adenosine, 3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-2′-deoxy-2′-fluoro-

Cytidine, 3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-2′-deoxy-2′-fluoro-5-methyl-

Uridine, 3′-de(phosphinicooxy)-5-methyl-2′-O-methyluridylylmethylene(methylimino)-(3′→5′)-2′-deoxy-2′-fluoro-5-methyl-

Guanosine, 3′-de(phosphinicooxy)-2′-O-methylguanylylmethylene(methylimino)-(3′→5′)-2′-O-methyl-

Adenosine, 3′-de(phosphinicooxy)-2′-O-methyladenylylmethylene(methylimino)-(3′→5′)-2′-O-methyl-

Cytidine, 3′-de(phosphinicooxy)-5-methyl-2′-O-methylcytidylylmethylene(methylimino)-(3′→5′)-5-methyl-2′-O-methyl-

Propanamide, N-[7-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-5-[[(trifluoroacetyl)amino]ethynyl]-1H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methyl-

N-[5-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[[(dimethylamino)methylene]amino]-7H-pyrrolo[2,3-d]pyrimidin-5-yl]-4-pentyn-1-yl]-2,2,2-trifluoroacetamide

N-[3-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[[(dimethylamino)methylene]amino]-7H-pyrrolo[2,3-d]pyrimidin-5-yl]-2-propyn-1-yl]-2,2,2-trifluoroacetamide

N-[5-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[[(dimethylamino)methylene]amino]-7H-pyrrolo[2,3-d]pyrimidin-5-yl]-4-pentyn-1-yl]-2,2,2-trifluoroacetamide

N-[3-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4-[[(dimethylamino)methylene]amino]-7H-pyrrolo[2,3-d]pyrimidin-5-yl]-2-propyn-1-yl]-2,2,2-trifluoroacetamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-3-bromo-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

N′-[1-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-3-iodo-1H-pyrazolo[3,4-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

1-[2,3-O-(1-Methylethylidene)-β-D-ribofuranosyl]-2,4(1H,3H)-pyridinedione

Propanamide, N-[7-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-4-oxo-5-(1-propynyl)-1H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methyl-