1,1-Dimethylethyl 3-[(2R,3R,3aR,4R,7R,7aS)-4-(dimethoxyphosphinyl)hexahydro-3-methoxy-7-(phenylmethoxy)-4H-furo[3,2-c]pyran-2-yl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate

1,1-Dimethylethyl 3-[3-deoxy-3-[(R)-(dimethoxyphosphinyl)hydroxymethyl]-2-O-methyl-5-O-(phenylmethyl)-β-D-allofuranosyl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate

1-[3-Deoxy-3-[(R)-(dimethoxyphosphinyl)hydroxymethyl]-2-O-methyl-5-O-(phenylmethyl)-β-D-allofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1,1-Dimethylethyl 3-[3-deoxy-6-O-[(1,1-dimethylethyl)diphenylsilyl]-3-formyl-2-O-methyl-5-O-(phenylmethyl)-β-D-allofuranosyl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate

1,1-Dimethylethyl 3-[3-deoxy-3-[(R)-(dimethoxyphosphinyl)hydroxymethyl]-6-O-[(1,1-dimethylethyl)diphenylsilyl]-2-O-methyl-5-O-(phenylmethyl)-β-D-allofuranosyl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate

1,1-Dimethylethyl 3-[3-deoxy-6-O-[(1,1-dimethylethyl)diphenylsilyl]-3-(hydroxymethyl)-2-O-methyl-5-O-(phenylmethyl)-β-D-allofuranosyl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate

1,1-Dimethylethyl 3-[3-deoxy-6-O-[(1,1-dimethylethyl)diphenylsilyl]-2-O-methyl-3-[(2-naphthalenylmethoxy)methyl]-5-O-(phenylmethyl)-β-D-allofuranosyl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate

1,1-Dimethylethyl 3-[3-deoxy-6-O-[(1,1-dimethylethyl)diphenylsilyl]-3-[(2-naphthalenylmethoxy)methyl]-5-O-(phenylmethyl)-β-D-allofuranosyl]-3,6-dihydro-5-methyl-2,6-dioxo-1(2H)-pyrimidinecarboxylate