Adenosine, 2′-O-[(1,1-dimethylethyl)dimethylsilyl]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-N,N-bis(phenylmethyl)-

18-Norspirosola-5,12-dien-3-ol, 17-methyl-28-nitroso-, (3β,16β,17β,22β,25S)-

18-Norspirosola-5,12-dien-3-ol, 28-acetyl-17-methyl-, (3β,16β,17β,22β,25S)-

(1′S,3′R,3aR,6R,6aR)-6-[[[(1,1-Dimethylethyl)dimethylsilyl]oxy]methyl]-6,6a-dihydro-1′,2,2-trimethylspiro[furo[3,4-d]-1,3-dioxole-4(3aH),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(1′R,3′R,3aR,6R,6aR)-6-[[[(1,1-Dimethylethyl)dimethylsilyl]oxy]methyl]-6,6a-dihydro-1′,2,2-trimethylspiro[furo[3,4-d]-1,3-dioxole-4(3aH),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(3′R,3aR,6R,6aR)-6-[[[(1,1-Dimethylethyl)dimethylsilyl]oxy]methyl]-6,6a-dihydro-2,2-dimethylspiro[furo[3,4-d]-1,3-dioxole-4(3aH),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(3′S,6aR,9aS)-6,6a,9,9a-Tetrahydro-1′,1′-dimethyl-2,2,4,4-tetrakis(1-methylethyl)spiro[8H-furo[3,2-f]-1,3,5,2,4-trioxadisilocin-8,3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(1′S,3′S,6aR,9aS)-6,6a,9,9a-Tetrahydro-1′-methyl-2,2,4,4-tetrakis(1-methylethyl)spiro[8H-furo[3,2-f]-1,3,5,2,4-trioxadisilocin-8,3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(1′R,3′R,6aR,9aS)-6,6a,9,9a-Tetrahydro-1′-methyl-2,2,4,4-tetrakis(1-methylethyl)spiro[8H-furo[3,2-f]-1,3,5,2,4-trioxadisilocin-8,3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(3′S,6aR,9aS)-6,6a,9,9a-Tetrahydro-2,2,4,4-tetrakis(1-methylethyl)spiro[8H-furo[3,2-f]-1,3,5,2,4-trioxadisilocin-8,3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(1′S,2S,4S,5R)-4,5-Dihydro-4-hydroxy-5-(hydroxymethyl)-1′-methylspiro[furan-2(3H),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(2S,4S,5R)-4,5-Dihydro-4-hydroxy-5-(hydroxymethyl)-1′,1′-dimethylspiro[furan-2(3H),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(1′R,2R,4S,5R)-4,5-Dihydro-4-hydroxy-5-(hydroxymethyl)-1′-methylspiro[furan-2(3H),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(2R,4S,5R)-4,5-Dihydro-4-hydroxy-5-(hydroxymethyl)spiro[furan-2(3H),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

Uridine, 5′-O-[(1,1-dimethylethyl)dimethylsilyl]-6-[(1S)-1-hydroxyethyl]-2′,3′-O-(1-methylethylidene)-

Uridine, 5′-O-[(1,1-dimethylethyl)dimethylsilyl]-6-[(1R)-1-hydroxyethyl]-2′,3′-O-(1-methylethylidene)-

5′-O-[(1,1-Dimethylethyl)dimethylsilyl]-6-(hydroxymethyl)-2′,3′-O-(1-methylethylidene)uridine

Uridine, 6-[(1S)-1-[(chloroacetyl)oxy]ethyl]-2′-deoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 6-[(1R)-1-[(chloroacetyl)oxy]ethyl]-2′-deoxy-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-

Uridine, 2′-deoxy-6-(1-hydroxy-1-methylethyl)-3′,5′-O-[1,1,3,3-tetrakis(1-methylethyl)-1,3-disiloxanediyl]-