(S)-cyanomethyl 6-azido-2-((tert-butoxycarbonyl)amino)hexanoate → (2S)-(2R,3S,4R,5R)-2-((((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-((phosphonooxy)methyl)tetrahydrofuran-3-yl)oxy)(hydroxy)phosphoryl)oxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 6-azido-2-((tert-butoxycarbonyl)amino)hexanoate

HRID 1482344Notes

Reaction equation

HRID 1482344 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].[N:60]([CH2:63][CH2:64][CH2:65][CH2:66][C@H:67]([NH:74][C:75]([O:77][C:78]([CH3:81])([CH3:80])[CH3:79])=[O:76])[C:68](OCC#N)=[O:69])=[N+:61]=[N-:62]>O.O1CCCC1>[N:60]([CH2:63][CH2:64][CH2:65][CH2:66][C@@H:67]([NH:74][C:75]([O:77][C:78]([CH3:81])([CH3:80])[CH3:79])=[O:76])[C:68]([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:69])=[N+:61]=[N-:62]

Participants

5

Reactant 2

HCID 89668729(S)-cyanomethyl 6-azido-2-((tert-butoxycarbonyl)amino)hexanoateHCID 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×

Product 1

HCID 117736203(2S)-(2R,3S,4R,5R)-2-((((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-((phosphonooxy)methyl)tetrahydrofuran-3-yl)oxy)(hydroxy)phosphoryl)oxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 6-azido-2-((tert-butoxycarbonyl)amino)hexanoateYield 28%

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) (78 mg, 0.122 mmol) in water (0.3 mL) and a solution of (S)-cyanomethyl 6-azido-2-((tert-butoxycarbonyl)amino)hexanoate (Compound tk49) (152 mg, 0.488 mmol) in tetrahydrofuran (0.3 mL) were added to buffer A (18 mL), and the mixture was stirred at room temperature for 0.75 hour. Following lyophilization, the resulting residue was purified by reverse-phase silica gel column chromatography (0.05% aqueous trifluoroacetic acid solution/0.05% trifluoroacetic acid-acetonitrile solution) to afford (2S)-(2R,3S,4R,5R)-2-((((((2R,3S,5R)-5-(4-amino-2-oxopyrimidin-1(2H)-yl)-2-((phosphonooxy)methyl)tetrahydrofuran-3-yl)oxy)(hydroxy)phosphoryl)oxy)methyl)-5-(6-amino-9H-purin-9-yl)-4-hydroxytetrahydrofuran-3-yl 6-azido-2-((tert-butoxycarbonyl)amino)hexanoate (Compound tk50) (30.2 mg, 28%).

Workup

  1. customthe resulting residue was purified by reverse-phase silica gel column chromatography (0.05% aqueous trifluoroacetic acid solution/0.05% trifluoroacetic acid-acetonitrile solution)

Sources & evidence

ORD record
ord-5247c3e5b23849b3aeaefc0f29414b0b
Source dataset
uspto-grants-2016_08
Patent number
US09409952B2

Reaction notes

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