Spiro[2H-1,4-benzoxazine-3(4H),10′(9′H)-[9,12]epoxy[1H]diindolo[1,2,3-fg:3′,2′,1′-kl]pyrrolo[3,4-i][1,6]benzodiazocine]-5-carboxylic acid, 2′,3′,11′,12′-tetrahydro-1′,2-dioxo-, methyl ester, (9′S,12′R)-

3H-Imidazo[4,5-b]pyridine, 5,7-dichloro-3-[2,3-di-O-acetyl-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-3-C-ethynyl-β-D-ribofuranosyl]-

4-β-D-Arabinofuranosyl-3H-1,2-dithiolo[4,3-d]pyrimidine-5,7(4H,6H)-dione

4-(2-Deoxy-β-D-erythro-pentofuranosyl)-3H-1,2-dithiolo[4,3-d]pyrimidine-5,7(4H,6H)-dione

4-β-D-Ribofuranosyl-3H-1,2-dithiolo[4,3-d]pyrimidine-5,7(4H,6H)-dione