1-[(6R,7S,8R)-7,8-Dihydroxy-2,5-dioxaspiro[3.4]oct-6-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

4H,9H-1,3-Dioxino[4′′,5′′:4′,5′]furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-9-one, 4a,5a,11a,11b-tetrahydro-2,2-dimethyl-4a-[[[(4-methylphenyl)sulfonyl]oxy]methyl]-, (4aS,5aR,11aS,11bR)-

4H,9H-1,3-Dioxino[4′′,5′′:4′,5′]furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-9-one, 4a,5a,11a,11b-tetrahydro-2,2,8-trimethyl-4a-[[[(4-methylphenyl)sulfonyl]oxy]methyl]-, (4aS,5aR,11aS,11bR)-

N-[9-[(2R,3S,3aR,4aR,5aR,5bS)-5a-[Bis(4-methoxyphenyl)phenylmethoxy]-3-fluorooctahydro-3a-hydroxycyclopropa[4,5]cyclopenta[1,2-b]furan-2-yl]-9H-purin-6-yl]benzamide

N-[9-[(2R,3S,3aR,4aS,5aR,5bR)-3-Fluorooctahydro-3a,5a-dihydroxycyclopropa[4,5]cyclopenta[1,2-b]furan-2-yl]-9H-purin-6-yl]benzamide

N-[9-[(2S,3S,3aR,4aS,5aR,5bR)-3-Fluorooctahydro-3a,5a-dihydroxycyclopropa[4,5]cyclopenta[1,2-b]furan-2-yl]-9H-purin-6-yl]benzamide

N-[9-[(2R,3S,3aR,4aS,5aR,5bR)-3a,5a-Bis(acetyloxy)-3-fluorooctahydrocyclopropa[4,5]cyclopenta[1,2-b]furan-2-yl]-9H-purin-6-yl]benzamide

N-[9-[(2S,3S,3aR,4aS,5aR,5bR)-3a,5a-Bis(acetyloxy)-3-fluorooctahydrocyclopropa[4,5]cyclopenta[1,2-b]furan-2-yl]-9H-purin-6-yl]benzamide