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核苷、核苷酸和类似物

中文名称 英文名称 CAS号 化学式 结构式图片
—— 1-beta-D-Arabinofuranosyl-5-iodouracil —— C9H11IN2O6
1-beta-D-Arabinofuranosyl-5-iodouracil
—— [(2R,5R)-5-[2-(2-methylpropanoylamino)-6-oxo-1H-purin-9-yl]-3-methylsulfonyloxyoxolan-2-yl]methyl methanesulfonate —— C16H23N5O9S2
[(2R,5R)-5-[2-(2-methylpropanoylamino)-6-oxo-1H-purin-9-yl]-3-methylsulfonyloxyoxolan-2-yl]methyl methanesulfonate
—— N-[9-(5-ethyl-3,4-dihydroxyoxolan-2-yl)-6-oxo-1H-purin-2-yl]acetamide —— C13H17N5O5
N-[9-(5-ethyl-3,4-dihydroxyoxolan-2-yl)-6-oxo-1H-purin-2-yl]acetamide
—— S-[2-[[(2S,4R,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-4-hydroxyoxolan-2-yl]methoxy-[2-(2,2-dimethylpropanoylsulfanyl)ethenoxy]phosphoryl]oxyethenyl] 2,2-dimethylpropanethioate —— C24H34N5O9PS2
S-[2-[[(2S,4R,5R)-5-(2-amino-6-oxo-1H-purin-9-yl)-4-hydroxyoxolan-2-yl]methoxy-[2-(2,2-dimethylpropanoylsulfanyl)ethenoxy]phosphoryl]oxyethenyl] 2,2-dimethylpropanethioate
—— 9H-fluoren-9-ylmethyl N-[3-(tert-butyldisulfanyl)-1-[2-[2-[2-[2-[3-[1-[(2R,5R)-4-hydroxy-5-(phosphonooxymethyl)oxolan-2-yl]-2,4-dioxopyrimidin-5-yl]prop-2-enylamino]-2-oxoethoxy]ethoxy]ethoxy]ethylamino]-1-oxopropan-2-yl]carbamate —— C42H56N5O15PS2
9H-fluoren-9-ylmethyl N-[3-(tert-butyldisulfanyl)-1-[2-[2-[2-[2-[3-[1-[(2R,5R)-4-hydroxy-5-(phosphonooxymethyl)oxolan-2-yl]-2,4-dioxopyrimidin-5-yl]prop-2-enylamino]-2-oxoethoxy]ethoxy]ethoxy]ethylamino]-1-oxopropan-2-yl]carbamate
—— [(2R,3S,4R,5R)-5-[6-(1,4-dihydroisoindol-2-ylmethyl)purin-9-yl]-3,4-dihydroxyoxolan-2-yl]methyl sulfamate —— C19H22N6O6S
[(2R,3S,4R,5R)-5-[6-(1,4-dihydroisoindol-2-ylmethyl)purin-9-yl]-3,4-dihydroxyoxolan-2-yl]methyl sulfamate
—— (2R,5R)-2-[6-(4-aminobutylamino)purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol —— C14H22N6O4
(2R,5R)-2-[6-(4-aminobutylamino)purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol
—— octadec-9-enyl N-[1-[(2R,5R)-3,4-dihydroxy-5-methyloxolan-2-yl]-5-fluoro-2-oxopyrimidin-4-yl]carbamate —— C28H46FN3O6
octadec-9-enyl N-[1-[(2R,5R)-3,4-dihydroxy-5-methyloxolan-2-yl]-5-fluoro-2-oxopyrimidin-4-yl]carbamate
—— ethyl 1-[9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-[(2-ethoxycarbonyl-3-oxobutylidene)amino]purin-2-yl]pyrazole-4-carboxylate —— C23H27N7O9
ethyl 1-[9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-[(2-ethoxycarbonyl-3-oxobutylidene)amino]purin-2-yl]pyrazole-4-carboxylate
—— 2-azido-9-[(2R,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1H-purin-6-one —— C10H11N7O4
2-azido-9-[(2R,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1H-purin-6-one
—— 2-[1-[4-[4-[2-[4-carboxy-3-(3-hydroxy-6-oxoxanthen-9-yl)benzoyl]hydrazinyl]-4-oxobutyl]phenyl]-2,5-dihydroxypyrrol-3-yl]sulfanylethoxy-hydroxy-[[(2R,5R)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy]-methoxyphosphanium —— C48H47N5O17PS+
2-[1-[4-[4-[2-[4-carboxy-3-(3-hydroxy-6-oxoxanthen-9-yl)benzoyl]hydrazinyl]-4-oxobutyl]phenyl]-2,5-dihydroxypyrrol-3-yl]sulfanylethoxy-hydroxy-[[(2R,5R)-3-hydroxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy]-methoxyphosphanium
—— N-[2-[[2-[2-amino-5-[(2S,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-4-oxopyrimidin-1-yl]acetyl]amino]ethyl]-2,2,2-trifluoroacetamide;5-[(2S,4S,5R)-3,4-bis(trimethylsilyloxy)-5-(trimethylsilyloxymethyl)oxolan-2-yl]-4-trimethylsilyloxypyrimidin-2-amine;ethyl propanoate —— C41H75F3N8O14Si4
N-[2-[[2-[2-amino-5-[(2S,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-4-oxopyrimidin-1-yl]acetyl]amino]ethyl]-2,2,2-trifluoroacetamide;5-[(2S,4S,5R)-3,4-bis(trimethylsilyloxy)-5-(trimethylsilyloxymethyl)oxolan-2-yl]-4-trimethylsilyloxypyrimidin-2-amine;ethyl propanoate
—— (2R,3S,4R)-2-(hydroxymethyl)-5-[6-(4-phenoxyphenyl)purin-9-yl]oxolane-3,4-diol —— C22H20N4O5
(2R,3S,4R)-2-(hydroxymethyl)-5-[6-(4-phenoxyphenyl)purin-9-yl]oxolane-3,4-diol
—— 1-[(2R,4R,5R)-5-(hydroxymethyl)-4-methylsulfinyloxolan-2-yl]-5-methylpyrimidine-2,4-dione;1,1,1-trichloroethane —— C13H19Cl3N2O5S
1-[(2R,4R,5R)-5-(hydroxymethyl)-4-methylsulfinyloxolan-2-yl]-5-methylpyrimidine-2,4-dione;1,1,1-trichloroethane
—— [(2R,3S,4R)-5-(4-amino-6-bromo-5-cyanopyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dibenzoyloxy-2-(2-oxo-2-phenylacetyl)oxolan-2-yl]methyl benzoate —— C41H28BrN5O9
[(2R,3S,4R)-5-(4-amino-6-bromo-5-cyanopyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dibenzoyloxy-2-(2-oxo-2-phenylacetyl)oxolan-2-yl]methyl benzoate
—— [2-[(3aR,4R,6S,6aS)-2,2-dimethyl-4-(6-oxo-2-phosphono-1H-purin-9-yl)-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]-2-oxoethyl]-trihydroxyphosphanium —— C14H19N4O11P2+
[2-[(3aR,4R,6S,6aS)-2,2-dimethyl-4-(6-oxo-2-phosphono-1H-purin-9-yl)-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]-2-oxoethyl]-trihydroxyphosphanium
—— 5-benzyl-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-2-sulfanylidenepyrimidin-4-one —— C16H18N2O4S
5-benzyl-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-2-sulfanylidenepyrimidin-4-one
—— N4-tert-butoxycarbonyl-3',5'-O-bis-tert-butyl-dimethylsilanyl-2'-deoxycytidine —— C26H49N3O6Si2
N4-tert-butoxycarbonyl-3',5'-O-bis-tert-butyl-dimethylsilanyl-2'-deoxycytidine
—— 1-[(2R,4S,5R)-5-(1-aminoprop-2-enoxymethyl)-4-hydroxyoxolan-2-yl]-5-methylpyrimidine-2,4-dione —— C13H19N3O5
1-[(2R,4S,5R)-5-(1-aminoprop-2-enoxymethyl)-4-hydroxyoxolan-2-yl]-5-methylpyrimidine-2,4-dione
—— [3-Benzoyloxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methyl benzoate;ethane —— C28H34N2O7
[3-Benzoyloxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methyl benzoate;ethane
—— ethane;pyrrolidin-3-yl 4-[3-[6-amino-9-[(2R,4R,5S)-5-(cyclopropylcarbamoyl)-3,4-dihydroxyoxolan-2-yl]purin-2-yl]prop-2-ynyl]piperidine-1-carboxylate —— C28H40N8O6
ethane;pyrrolidin-3-yl 4-[3-[6-amino-9-[(2R,4R,5S)-5-(cyclopropylcarbamoyl)-3,4-dihydroxyoxolan-2-yl]purin-2-yl]prop-2-ynyl]piperidine-1-carboxylate
—— 2-amino-N-[(2S,3S,4R,5R)-5-[6-(dimethylamino)purin-9-yl]-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl]-3-(4-methoxyphenyl)propanamide;dihydrochloride —— C22H31Cl2N7O5
2-amino-N-[(2S,3S,4R,5R)-5-[6-(dimethylamino)purin-9-yl]-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl]-3-(4-methoxyphenyl)propanamide;dihydrochloride
—— Inosine-5'-diphosphate trisodium salt 81012-88-6 C10H11N4Na3O11P2
Inosine-5'-diphosphate trisodium salt
—— rGuo-P.2Na+.H2O —— C10H14N5Na2O9P
rGuo-P.2Na+.H2O
—— sodium;[(4aR,6R,7R,7aR)-6-[6-(butanoylamino)purin-9-yl]-2-oxido-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-7-yl] butanoate;hydrate —— C18H25N5NaO9P
sodium;[(4aR,6R,7R,7aR)-6-[6-(butanoylamino)purin-9-yl]-2-oxido-2-oxo-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxaphosphinin-7-yl] butanoate;hydrate
—— Guanosine-5'-triphosphate (disodium salt) —— C10H14N5Na2O14P3
Guanosine-5'-triphosphate (disodium salt)
—— (2R,3R,4S,5R)-2-(6-amino-8-chloropurin-9-yl)-5-(hydroxymethyl)oxolane-3,4-diol;hydrate —— C20H26Cl2N10O9
(2R,3R,4S,5R)-2-(6-amino-8-chloropurin-9-yl)-5-(hydroxymethyl)oxolane-3,4-diol;hydrate
—— disodium;[[[3,4-dihydroxy-5-(6-oxo-1H-purin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl] phosphate —— C10H13N4Na2O14P3
disodium;[[[3,4-dihydroxy-5-(6-oxo-1H-purin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-hydroxyphosphoryl] phosphate
—— (2R,3S,4R,5R)-2-(hydroxymethyl)-5-[6-(3-methylbut-2-enylamino)purin-9-yl]oxolane-3,4-diol;hydrate —— C30H44N10O9
(2R,3S,4R,5R)-2-(hydroxymethyl)-5-[6-(3-methylbut-2-enylamino)purin-9-yl]oxolane-3,4-diol;hydrate
—— (2R,5R)-2-[6-(cyclopentylamino)purin-9-yl]-5-(cyclopropyloxymethyl)oxolane-3,4-diol —— C18H25N5O4
(2R,5R)-2-[6-(cyclopentylamino)purin-9-yl]-5-(cyclopropyloxymethyl)oxolane-3,4-diol
—— (2R,3R,4S,5R)-2-[6-[(4-aminobutylideneamino)-methylamino]purin-9-yl]-5-methyloxolane-3,4-diol —— C15H23N7O3
(2R,3R,4S,5R)-2-[6-[(4-aminobutylideneamino)-methylamino]purin-9-yl]-5-methyloxolane-3,4-diol
—— 2-[[(2S)-4-[6-(ethylcarbamoylamino)purin-9-yl]-2-(2-phenylethenyl)-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methoxy]-3-fluorobenzoic acid —— C29H27FN6O7
2-[[(2S)-4-[6-(ethylcarbamoylamino)purin-9-yl]-2-(2-phenylethenyl)-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methoxy]-3-fluorobenzoic acid
—— [(2R,3R,4R,5R)-5-[2-[(4-aminocyclohexyl)amino]-6-[[(2S)-1-hydroxy-3-phenylpropan-2-yl]amino]purin-9-yl]-4-formyloxy-2-(2-methyltetrazol-5-yl)oxolan-3-yl] formate —— C28H35N11O6
[(2R,3R,4R,5R)-5-[2-[(4-aminocyclohexyl)amino]-6-[[(2S)-1-hydroxy-3-phenylpropan-2-yl]amino]purin-9-yl]-4-formyloxy-2-(2-methyltetrazol-5-yl)oxolan-3-yl] formate
—— [[(2R,3S,4R,5R)-5-(6-amino-7H-purin-9-ium-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl] [(2R,3S,4R,5R)-5-(3-carbamoylpyridin-1-ium-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate;tetrahydrate —— C21H35N7O18P2
[[(2R,3S,4R,5R)-5-(6-amino-7H-purin-9-ium-9-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-oxidophosphoryl] [(2R,3S,4R,5R)-5-(3-carbamoylpyridin-1-ium-1-yl)-3,4-dihydroxyoxolan-2-yl]methyl phosphate;tetrahydrate
—— 3-[[(2R,3S,5R)-5-[2-chloro-6-(2,2-diphenylethylamino)purin-9-yl]-3,4-dihydroxyoxolan-2-yl]methyl]-4-hydroxy-1H-imidazol-2-one —— C27H26ClN7O5
3-[[(2R,3S,5R)-5-[2-chloro-6-(2,2-diphenylethylamino)purin-9-yl]-3,4-dihydroxyoxolan-2-yl]methyl]-4-hydroxy-1H-imidazol-2-one
—— 3-benzoyl-1-[(3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-prop-1-ynylpyrimidine-2,4-dione —— C19H18N2O7
3-benzoyl-1-[(3S,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-prop-1-ynylpyrimidine-2,4-dione
—— (2R,3S,4R,5R)-2-[[4-aminobut-2-enyl(methyl)amino]methyl]-5-(6-amino-2-chloropurin-9-yl)oxolane-3,4-diol —— C15H22ClN7O3
(2R,3S,4R,5R)-2-[[4-aminobut-2-enyl(methyl)amino]methyl]-5-(6-amino-2-chloropurin-9-yl)oxolane-3,4-diol
—— 3-[(2,4-dihydroxyoxan-3-yl)methyl]-1-[(2R,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidine-2,4-dione —— C16H24N2O8
3-[(2,4-dihydroxyoxan-3-yl)methyl]-1-[(2R,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidine-2,4-dione
—— (3R,4R,5R)-2-(6-aminopurin-9-yl)-5-(pyridin-2-yloxymethyl)oxolane-3,4-diol —— C15H16N6O4
(3R,4R,5R)-2-(6-aminopurin-9-yl)-5-(pyridin-2-yloxymethyl)oxolane-3,4-diol
—— 3-Ethyl-1-[4-phenylmethoxy-5-(phenylmethoxymethyl)-3-prop-2-enyloxolan-2-yl]pyrimidine-2,4-dione —— C28H32N2O5
3-Ethyl-1-[4-phenylmethoxy-5-(phenylmethoxymethyl)-3-prop-2-enyloxolan-2-yl]pyrimidine-2,4-dione
—— (2R,5R)-2-(hydroxymethyl)-5-[6-(propylideneamino)purin-9-yl]oxolan-3-ol —— C13H17N5O3
(2R,5R)-2-(hydroxymethyl)-5-[6-(propylideneamino)purin-9-yl]oxolan-3-ol
—— [(2R,3S,5R)-5-(6-aminopurin-9-yl)-2-[[[9-[(2R,3R,4S,5R)-4-[[(2R,5R)-4-[[2-[2-[[2-[[(2R,5R)-5-[[(2R,3S,4R,5R)-5-[6-[[(2R,3S,5R)-5-(6-aminopurin-9-yl)-3-[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3-hydroxy-4-[[2-[[2-[(2-sulfanylacetyl)amino]acetyl]amino]acetyl]amino]oxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxyamino]purin-9-yl]-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl]oxy-hydroxyphosphoryl]peroxy-2-(2,4-dioxopyrimidin-1-yl)-4-hydroxyoxolan-3-yl]amino]-2-oxoethyl]-ethylamino]ethyl-ethylamino]acetyl]amino]-5-(2,4-dioxopyrimidin-1-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-3-hydroxy-5-(hydroxymethyl)oxolan-2-yl]purin-6-yl]amino]oxymethyl]oxolan-3-yl] [(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3-hydroxy-4-[[2-[[2-[(2-sulfanylacetyl)amino]acetyl]amino]acetyl]amino]oxolan-2-yl]oxy hydrogen phosphate —— C97H125N41O50P4S2
[(2R,3S,5R)-5-(6-aminopurin-9-yl)-2-[[[9-[(2R,3R,4S,5R)-4-[[(2R,5R)-4-[[2-[2-[[2-[[(2R,5R)-5-[[(2R,3S,4R,5R)-5-[6-[[(2R,3S,5R)-5-(6-aminopurin-9-yl)-3-[[(2R,3S,4R,5R)-5-(6-aminopurin-9-yl)-3-hydroxy-4-[[2-[[2-[(2-sulfanylacetyl)amino]acetyl]amino]acetyl]amino]oxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxyamino]purin-9-yl]-4-hydroxy-2-(hydroxymethyl)oxolan-3-yl]oxy-hydroxyphosphoryl]peroxy-2-(2,4-dioxopyrimidin-1-yl)-4-hydroxyoxolan-3-yl]amino]-2-oxoethyl]-ethylamino]ethyl-ethylamino]acetyl]amino]-5-(2,4-dioxopyrimidin-1-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-3-hydroxy-5-(hydroxymethyl)oxolan-2-yl]purin-6-yl]amino]oxymethyl]oxolan-3-yl] [(2R,3S,4R,5R)-5-(2,4-dioxopyrimidin-1-yl)-3-hydroxy-4-[[2-[[2-[(2-sulfanylacetyl)amino]acetyl]amino]acetyl]amino]oxolan-2-yl]oxy hydrogen phosphate
—— 3-[(1-Hexyltriazol-4-yl)methyl]-1-[4-hydroxy-5-(hydroxymethyl)thiolan-2-yl]-5-methylpyrimidine-2,4-dione —— C19H29N5O4S
3-[(1-Hexyltriazol-4-yl)methyl]-1-[4-hydroxy-5-(hydroxymethyl)thiolan-2-yl]-5-methylpyrimidine-2,4-dione
—— N'-[9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]purin-6-yl]benzohydrazide —— C17H18N6O5
N'-[9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]purin-6-yl]benzohydrazide
—— N-[(3S)-1-[[(4R,6R)-4-(3-carbamoyl-1,2,4-triazol-1-yl)-2-phenyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methoxy]-3-methyl-1-oxopentan-2-yl]-methylboronamidic acid —— C22H30BN5O7
N-[(3S)-1-[[(4R,6R)-4-(3-carbamoyl-1,2,4-triazol-1-yl)-2-phenyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-6-yl]methoxy]-3-methyl-1-oxopentan-2-yl]-methylboronamidic acid
—— N-[9-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-[1-(2-nitrophenyl)ethoxy]purin-2-yl]acetamide —— C20H22N6O7
N-[9-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-6-[1-(2-nitrophenyl)ethoxy]purin-2-yl]acetamide
—— (2R,3S)-2-(hydroxymethyl)-5-[6-methoxy-8-(methylamino)-7H-purin-1-ium-1-yl]oxolan-3-ol —— C12H18N5O4+
(2R,3S)-2-(hydroxymethyl)-5-[6-methoxy-8-(methylamino)-7H-purin-1-ium-1-yl]oxolan-3-ol
—— (2R,3S,5R)-5-(6-amino-2-oct-1-ynylpurin-9-yl)-2-(hydroxymethyl)oxolan-3-ol —— C18H25N5O3
(2R,3S,5R)-5-(6-amino-2-oct-1-ynylpurin-9-yl)-2-(hydroxymethyl)oxolan-3-ol
—— 2-amino-9-[(2R,5R)-3-azido-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1H-purin-6-one —— C10H12N8O4
2-amino-9-[(2R,5R)-3-azido-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-1H-purin-6-one
—— N-[3-[(2R,3R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]prop-2-enyl]-2,3-dihydroxybenzamide —— C19H20N6O6
N-[3-[(2R,3R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]prop-2-enyl]-2,3-dihydroxybenzamide