((2R,3S,5R)-5-(4-Amino-2-oxopyrimidin-1(2H)-yl)-3-(((((2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methoxy)(hydroxy)phosphoryl)oxy)tetrahydrofuran-2-yl)methyl dihydrogenphosphate tetrabutylammonium salt → (2R,3S,4R,5R)-2-((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-(phosphonooxymethyl)tetrahydrofuran-3-yloxy)(hydroxy)phosphoryloxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 2-(tert-butyldimethylsilyloxy)acetate

HRID 1482298Notes

Reaction equation

HRID 1482298 reaction equation
C([N+](CCCC)(CCCC)CCCC)CCC.[P:18]([O:22][CH2:23][C@@H:24]1[C@@H:28]([O:29][P:30]([O:33][CH2:34][C@@H:35]2[C@@H:39]([OH:40])[C@@H:38]([OH:41])[C@H:37]([N:42]3[CH:50]=[N:49][C:48]4[C:43]3=[N:44][CH:45]=[N:46][C:47]=4[NH2:51])[O:36]2)([OH:32])=[O:31])[CH2:27][C@H:26]([N:52]2[CH:57]=[CH:56][C:55]([NH2:58])=[N:54][C:53]2=[O:59])[O:25]1)([OH:21])([OH:20])=[O:19].[Si:60]([O:67][CH2:68][C:69](OCC#N)=[O:70])([C:63]([CH3:66])([CH3:65])[CH3:64])([CH3:62])[CH3:61]>O.O1CCCC1>[Si:60]([O:67][CH2:68][C:69]([O:40][C@H:39]1[C@@H:38]([OH:41])[C@H:37]([N:42]2[CH:50]=[N:49][C:48]3[C:43]2=[N:44][CH:45]=[N:46][C:47]=3[NH2:51])[O:36][C@@H:35]1[CH2:34][O:33][P:30]([O:29][C@H:28]1[CH2:27][C@H:26]([N:52]2[CH:57]=[CH:56][C:55]([NH2:58])=[N:54][C:53]2=[O:59])[O:25][C@@H:24]1[CH2:23][O:22][P:18]([OH:21])([OH:20])=[O:19])([OH:32])=[O:31])=[O:70])([C:63]([CH3:66])([CH3:65])[CH3:64])([CH3:62])[CH3:61]

Participants

5

Reactant 2

HCID 117735960((2R,3S,5R)-5-(4-Amino-2-oxopyrimidin-1(2H)-yl)-3-(((((2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methoxy)(hydroxy)phosphoryl)oxy)tetrahydrofuran-2-yl)methyl dihydrogenphosphate tetrabutylammonium salt2×HCID 131736702Cyanomethyl 2-(tert-butyldimethylsilyloxy)acetate2×

Product 1

HCID 131736701(2R,3S,4R,5R)-2-((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-(phosphonooxymethyl)tetrahydrofuran-3-yloxy)(hydroxy)phosphoryloxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 2-(tert-butyldimethylsilyloxy)acetateYield 57%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent

Procedure

A solution of ((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-3-(((((2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methoxy) (hydroxy)phosphoryl)oxy)tetrahydrofuran-2-yl)methyl dihydrogenphosphate (Compound 1h) (144 mg, 0.227 mmol) in water (1 ml) and a solution of cyanomethyl 2-(tert-butyldimethylsilyloxy)acetate (Compound 21) (104 mg, 0.453 mmol) in tetrahydrofuran (1 ml) were added to buffer A (30 mL), and the mixture was stirred at room temperature for 2 hours. Following lyophilization, the resulting residue was purified by reverse-phase silica gel column chromatography (0.1% aqueous formic acid solution/0.1% formic acid-acetonitrile solution) to afford (2R,3S,4R,5R)-2-((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-(phosphonooxymethyl)tetrahydrofuran-3-yloxy)(hydroxy)phosphoryloxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 2-(tert-butyldimethylsilyloxy)acetate (Compound 22) (104.5 mg, 57%).

Workup

  1. customthe resulting residue was purified by reverse-phase silica gel column chromatography (0.1% aqueous formic acid solution/0.1% formic acid-acetonitrile solution)

Sources & evidence

ORD record
ord-620e8f5775f0454890aab0e1050f7b28
Source dataset
uspto-grants-2016_08
Patent number
US09409952B2

Reaction notes

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