N′-[8-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-2,8-dihydro-2-oxoimidazo[1,2-a]-1,3,5-triazin-4-yl]-N,N-dimethylmethanimidamide

N′-[8-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-2,8-dihydro-2-oxoimidazo[1,2-a]-1,3,5-triazin-4-yl]-N,N-dimethylmethanimidamide

N′-[8-(2-Deoxy-β-D-erythro-pentofuranosyl)-2,8-dihydro-2-oxoimidazo[1,2-a]-1,3,5-triazin-4-yl]-N,N-dimethylmethanimidamide

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-[(dibutylamino)carbonyl]-2-[2-(4-nitrophenyl)ethoxy]-