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吡咯并嘧啶核苷和核苷酸

中文名称 英文名称 CAS号 化学式 结构式图片
—— (3R,4R,5R)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-(hydroxymethyl)oxolan-3-ol —— C26H24Cl4N4O5
(3R,4R,5R)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-(hydroxymethyl)oxolan-3-ol
—— (2R,3R,4R)-5-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-2-(hydroxymethyl)-4-methoxy-4-methyloxolan-3-ol —— C13H18N4O4
(2R,3R,4R)-5-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-2-(hydroxymethyl)-4-methoxy-4-methyloxolan-3-ol
—— (4R,5R)-5-[5-(diazenylmethyl)-4-(ethoxyamino)pyrrolo[2,3-d]pyrimidin-7-yl]-2-(hydroxymethyl)-4-methoxy-4-methyloxolan-3-ol —— C16H24N6O5
(4R,5R)-5-[5-(diazenylmethyl)-4-(ethoxyamino)pyrrolo[2,3-d]pyrimidin-7-yl]-2-(hydroxymethyl)-4-methoxy-4-methyloxolan-3-ol
—— 7-[(3R,4R,5R)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-methoxy-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidin-4-amine —— C27H26Cl4N4O4
7-[(3R,4R,5R)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-methoxy-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidin-4-amine
—— 7-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-N'-hydroxy-4-(3-methylbutylamino)pyrrolo[2,3-d]pyrimidine-5-carboximidamide —— C17H26N6O5
7-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]-N'-hydroxy-4-(3-methylbutylamino)pyrrolo[2,3-d]pyrimidine-5-carboximidamide
—— (2R,3R,4R,5R)-2-(4-amino-5-hydrazinylpyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)-3-methyloxolane-3,4-diol —— C12H18N6O4
(2R,3R,4R,5R)-2-(4-amino-5-hydrazinylpyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)-3-methyloxolane-3,4-diol
—— (4R,5R)-5-[4-(ethoxyamino)-5-(nitrosomethyl)pyrrolo[2,3-d]pyrimidin-7-yl]-2-(hydroxymethyl)-4-methoxy-4-methyloxolan-3-ol —— C16H23N5O6
(4R,5R)-5-[4-(ethoxyamino)-5-(nitrosomethyl)pyrrolo[2,3-d]pyrimidin-7-yl]-2-(hydroxymethyl)-4-methoxy-4-methyloxolan-3-ol
—— 6-Amino-3-(((3,4-dihydroxy-6-oxabicyclo(3.1.0)hex-2-yl)amino)methyl)-1,5-dihydro-1-beta-D-ribofuranosyl-4H-pyrrolo(2,3-d)pyrimidin-4-one 107865-20-3 C17H23N5O8
6-Amino-3-(((3,4-dihydroxy-6-oxabicyclo(3.1.0)hex-2-yl)amino)methyl)-1,5-dihydro-1-beta-D-ribofuranosyl-4H-pyrrolo(2,3-d)pyrimidin-4-one
—— (3R,4R,5R)-2-[4-(hydroxyamino)-5-methylpyrrolo[2,3-d]pyrimidin-7-yl]-5-(hydroxymethyl)-3-methyloxolane-3,4-diol —— C13H18N4O5
(3R,4R,5R)-2-[4-(hydroxyamino)-5-methylpyrrolo[2,3-d]pyrimidin-7-yl]-5-(hydroxymethyl)-3-methyloxolane-3,4-diol
—— 2-amino-7-[(3R,4R,5R)-4-hydroxy-5-(hydroxymethyl)-3-methoxy-3-methyloxolan-2-yl]-5-methyl-3H-pyrrolo[2,3-d]pyrimidin-4-one —— C14H20N4O5
2-amino-7-[(3R,4R,5R)-4-hydroxy-5-(hydroxymethyl)-3-methoxy-3-methyloxolan-2-yl]-5-methyl-3H-pyrrolo[2,3-d]pyrimidin-4-one
—— [[[5-(4-Amino-5-thiophen-3-ylpyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-methylphosphoryl]oxy-methylphosphoryl]oxy-methylphosphinic acid —— C18H25N4O10P3S
[[[5-(4-Amino-5-thiophen-3-ylpyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-methylphosphoryl]oxy-methylphosphoryl]oxy-methylphosphinic acid
—— methyl 3-[4-amino-7-[(2R,3R,4R,5R)-4-hydroxy-5-(hydroxymethyl)-3-methoxyoxolan-2-yl]pyrrolo[2,3-d]pyrimidin-5-yl]prop-2-enoate —— C16H20N4O6
methyl 3-[4-amino-7-[(2R,3R,4R,5R)-4-hydroxy-5-(hydroxymethyl)-3-methoxyoxolan-2-yl]pyrrolo[2,3-d]pyrimidin-5-yl]prop-2-enoate
—— (3R,4R,5R)-2-(4-chloropyrrolo[2,3-d]pyrimidin-7-yl)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-ethyloxolan-3-ol —— C27H24Cl5N3O4
(3R,4R,5R)-2-(4-chloropyrrolo[2,3-d]pyrimidin-7-yl)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-ethyloxolan-3-ol
—— [[(2R,3S,4S,5R)-5-(2-amino-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate —— C11H17N4O14P3
[[(2R,3S,4S,5R)-5-(2-amino-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate
—— [[(2R,3R,4R,5R)-5-(2-amino-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-7-yl)-3-hydroxy-4-methoxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate —— C12H19N4O14P3
[[(2R,3R,4R,5R)-5-(2-amino-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-7-yl)-3-hydroxy-4-methoxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate
—— [[(2R,3R,4R,5R)-5-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-3-hydroxy-4-methoxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate —— C12H19N4O13P3
[[(2R,3R,4R,5R)-5-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-3-hydroxy-4-methoxy-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate
—— [[(2R,3R,4R,5R)-5-(2-amino-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxy-4-methyl-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate —— C12H19N4O14P3
[[(2R,3R,4R,5R)-5-(2-amino-4-oxo-3H-pyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxy-4-methyl-tetrahydrofuran-2-yl]methoxy-hydroxy-phosphoryl] phosphono hydrogen phosphate
—— 2-amino-6-chloro-7-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]-3H-pyrrolo[2,3-d]pyrimidin-4-one —— C11H13ClN4O5
2-amino-6-chloro-7-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl]-3H-pyrrolo[2,3-d]pyrimidin-4-one
—— 4-amino-7-[(2R,3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyl-tetrahydrofuran-2-yl]pyrrolo[2,3-d]pyrimidine-5-carboxamide —— C13H17N5O5
4-amino-7-[(2R,3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyl-tetrahydrofuran-2-yl]pyrrolo[2,3-d]pyrimidine-5-carboxamide
—— (2R,3R,4S,5R)-2-(4-cyclohepta-2,4,6-trien-1-ylsulfanylpyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol —— C18H19N3O4S
(2R,3R,4S,5R)-2-(4-cyclohepta-2,4,6-trien-1-ylsulfanylpyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol
—— (2R,3R,4S,5R)-2-(5-bromo-4-sulfanyl-pyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol —— C11H12BrN3O4S
(2R,3R,4S,5R)-2-(5-bromo-4-sulfanyl-pyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol
—— (2R,3R,4S,5R)-2-[5-bromo-4-(methylamino)pyrrolo[2,3-d]pyrimidin-7-yl]-5-(hydroxymethyl)tetrahydrofuran-3,4-diol —— C12H15BrN4O4
(2R,3R,4S,5R)-2-[5-bromo-4-(methylamino)pyrrolo[2,3-d]pyrimidin-7-yl]-5-(hydroxymethyl)tetrahydrofuran-3,4-diol
—— (2R,3R,4S,5R)-2-(5-bromo-4-methylsulfanyl-pyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol —— C12H14BrN3O4S
(2R,3R,4S,5R)-2-(5-bromo-4-methylsulfanyl-pyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol
—— (2R,3R,4S,5R)-2-(4-hydrazinopyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol —— C11H15N5O4
(2R,3R,4S,5R)-2-(4-hydrazinopyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol
—— 5-Brom-4-dimethylamino-7-(β-D-ribofuranosyl)-7H-pyrrolo<2,3-d>pyrimidin 24386-89-8 C13H17BrN4O4
5-Brom-4-dimethylamino-7-(β-D-ribofuranosyl)-7H-pyrrolo<2,3-d>pyrimidin
—— 1-(4-methylselanyl-pyrrolo[2,3-<i>b</i>]pyrimidin-7-yl)-β-<i>D</i>-1-deoxy-ribofuranose 60870-17-9 C12H15N3O4Se
1-(4-methylselanyl-pyrrolo[2,3-<i>b</i>]pyrimidin-7-yl)-β-<i>D</i>-1-deoxy-ribofuranose
—— 5-[4-Amino-5-(2-methyltetrazol-5-yl)pyrrolo[2,3-d]pyrimidin-7-yl]-2-(hydroxymethyl)-3-methyloxolane-3,4-diol —— C14H18N8O4
5-[4-Amino-5-(2-methyltetrazol-5-yl)pyrrolo[2,3-d]pyrimidin-7-yl]-2-(hydroxymethyl)-3-methyloxolane-3,4-diol
—— [5-[5-Cyano-4-(methylamino)pyrrolo[2,3-d]pyrimidin-7-yl]-3,4-dihydroxy-4-methyloxolan-2-yl]methyl ethenyl hydrogen phosphate —— C16H20N5O7P
[5-[5-Cyano-4-(methylamino)pyrrolo[2,3-d]pyrimidin-7-yl]-3,4-dihydroxy-4-methyloxolan-2-yl]methyl ethenyl hydrogen phosphate
—— (2R,3R,4R,5S)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-5-[[(2R,4R)-4-(4-chlorophenyl)-2-oxo-1,3,2lambda5-dioxaphosphinan-2-yl]-hydroxymethyl]-3-methyloxolane-3,4-diol —— C21H24ClN4O7P
(2R,3R,4R,5S)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-5-[[(2R,4R)-4-(4-chlorophenyl)-2-oxo-1,3,2lambda5-dioxaphosphinan-2-yl]-hydroxymethyl]-3-methyloxolane-3,4-diol
—— 7-[(4R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]-4-oxo-3H-pyrrolo[2,3-d]pyrimidine-5-carboximidamide —— C13H17N5O5
7-[(4R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]-4-oxo-3H-pyrrolo[2,3-d]pyrimidine-5-carboximidamide
—— (3R,4R,5R)-2-[5-ethynyl-4-(hydroxyamino)pyrrolo[2,3-d]pyrimidin-7-yl]-5-(hydroxymethyl)-3-methyloxolane-3,4-diol —— C14H16N4O5
(3R,4R,5R)-2-[5-ethynyl-4-(hydroxyamino)pyrrolo[2,3-d]pyrimidin-7-yl]-5-(hydroxymethyl)-3-methyloxolane-3,4-diol
—— ethyl 3-[4-amino-7-[(4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidin-5-yl]-3-oxopropanoate —— C17H22N4O7
ethyl 3-[4-amino-7-[(4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidin-5-yl]-3-oxopropanoate
—— [(2R,3R,4R,5R)-5-(4-amino-5-hydrazinylpyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxy-4-methyloxolan-2-yl]methyl dihydrogen phosphate —— C12H19N6O7P
[(2R,3R,4R,5R)-5-(4-amino-5-hydrazinylpyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxy-4-methyloxolan-2-yl]methyl dihydrogen phosphate
—— methyl 3-[4-amino-7-[(3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidin-5-yl]-3-methoxyprop-2-enoate —— C17H22N4O7
methyl 3-[4-amino-7-[(3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidin-5-yl]-3-methoxyprop-2-enoate
—— (3R,4R,5R)-2-[5-bromo-4-(hydroxyamino)pyrrolo[2,3-d]pyrimidin-7-yl]-5-(hydroxymethyl)-3-methyloxolane-3,4-diol —— C12H15BrN4O5
(3R,4R,5R)-2-[5-bromo-4-(hydroxyamino)pyrrolo[2,3-d]pyrimidin-7-yl]-5-(hydroxymethyl)-3-methyloxolane-3,4-diol
—— (Z)-7-((2R,3R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-N'-hydroxy-4-(prop-2-ynylamino)-7H-pyrrolo[2,3-d]pyrimidine-5-carboximidamide 1256456-32-2 C15H18N6O5
(Z)-7-((2R,3R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-N'-hydroxy-4-(prop-2-ynylamino)-7H-pyrrolo[2,3-d]pyrimidine-5-carboximidamide
—— 2-(4-Amino-5-prop-1-ynylpyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)oxolane-3,4-diol —— C14H16N4O4
2-(4-Amino-5-prop-1-ynylpyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)oxolane-3,4-diol
—— (3R,4R,5R)-5-(hydroxymethyl)-2-[4-(methoxyamino)-5-methylpyrrolo[2,3-d]pyrimidin-7-yl]-3-methyloxolane-3,4-diol —— C14H20N4O5
(3R,4R,5R)-5-(hydroxymethyl)-2-[4-(methoxyamino)-5-methylpyrrolo[2,3-d]pyrimidin-7-yl]-3-methyloxolane-3,4-diol
—— (3R,4R,5R)-2-(2-amino-4-chloro-5-methylpyrrolo[2,3-d]pyrimidin-7-yl)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-methyloxolan-3-ol —— C27H25Cl5N4O4
(3R,4R,5R)-2-(2-amino-4-chloro-5-methylpyrrolo[2,3-d]pyrimidin-7-yl)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-methyloxolan-3-ol
—— methyl 4-amino-7-[(3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrrolo[2,3-d]pyrimidine-5-carboximidate —— C13H17N5O5
methyl 4-amino-7-[(3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrrolo[2,3-d]pyrimidine-5-carboximidate
—— (3R,4R,5R)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-3,5-bis(hydroxymethyl)oxolane-3,4-diol —— C12H16N4O5
(3R,4R,5R)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-3,5-bis(hydroxymethyl)oxolane-3,4-diol
—— [5-(4-Amino-5-thiophen-2-ylpyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-methylphosphinic acid —— C16H19N4O6PS
[5-(4-Amino-5-thiophen-2-ylpyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxyoxolan-2-yl]methoxy-methylphosphinic acid
—— 7-[5-[[2-(ethylamino)-3-oxocyclopropyl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]-N-methyl-4-(methylideneamino)pyrrolo[2,3-d]pyrimidine-5-carbothioamide —— C19H24N6O5S
7-[5-[[2-(ethylamino)-3-oxocyclopropyl]oxymethyl]-3,4-dihydroxyoxolan-2-yl]-N-methyl-4-(methylideneamino)pyrrolo[2,3-d]pyrimidine-5-carbothioamide
—— 4-chloro-7-[(3R,4R,5R)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-methoxy-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidine —— C27H24Cl5N3O4
4-chloro-7-[(3R,4R,5R)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-methoxy-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidine
—— 3-hexadecoxypropyl (2R)-2-[[[(3S,4R,5R)-5-(4-amino-5-cyanopyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxyoxolan-2-yl]methylperoxy-phenylperoxyphosphoryl]amino]propanoate —— C40H61N6O11P
3-hexadecoxypropyl (2R)-2-[[[(3S,4R,5R)-5-(4-amino-5-cyanopyrrolo[2,3-d]pyrimidin-7-yl)-3,4-dihydroxyoxolan-2-yl]methylperoxy-phenylperoxyphosphoryl]amino]propanoate
—— [3,4-Dibenzoyloxy-5-(4-chloro-5-ethylpyrrolo[2,3-d]pyrimidin-7-yl)-4-methyloxolan-2-yl]methyl benzoate —— C35H30ClN3O7
[3,4-Dibenzoyloxy-5-(4-chloro-5-ethylpyrrolo[2,3-d]pyrimidin-7-yl)-4-methyloxolan-2-yl]methyl benzoate
—— (3R,4R,5R)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-ethenyloxolan-3-ol —— C27H24Cl4N4O4
(3R,4R,5R)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-4-[(2,4-dichlorophenyl)methoxy]-5-[(2,4-dichlorophenyl)methoxymethyl]-3-ethenyloxolan-3-ol
—— methyl 3-[4-amino-7-[(3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidin-5-yl]-2-methylprop-2-enoate —— C17H22N4O6
methyl 3-[4-amino-7-[(3R,4R,5R)-3,4-dihydroxy-5-(hydroxymethyl)-3-methyloxolan-2-yl]pyrrolo[2,3-d]pyrimidin-5-yl]-2-methylprop-2-enoate
—— (2R,3S,4R,5R)-2-chloro-2-[fluoro(hydroxy)methyl]-5-pyrrolo[2,3-d]pyrimidin-7-yloxolane-3,4-diol —— C11H11ClFN3O4
(2R,3S,4R,5R)-2-chloro-2-[fluoro(hydroxy)methyl]-5-pyrrolo[2,3-d]pyrimidin-7-yloxolane-3,4-diol
—— (3S,4R,5R)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)-3-methyloxolane-3,4-diol —— C12H16N4O4
(3S,4R,5R)-2-(4-aminopyrrolo[2,3-d]pyrimidin-7-yl)-5-(hydroxymethyl)-3-methyloxolane-3,4-diol