Sodium methanethiolate → 1-[(2S,4R,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-methylsulfanyl-tetrahydrofuran-2-yl]propyl acetate

HRID 60717Notes

Reaction equation

HRID 60717 reaction equation
[C:1]([O:4][CH:5]([C@@H:8]1[CH2:12][C@H:11](OS(C(F)(F)F)(=O)=O)[C@H:10]([N:21]2[C:25]3[N:26]=[C:27]([NH2:31])[NH:28][C:29](=[O:30])[C:24]=3[S:23][C:22]2=[O:32])[O:9]1)[CH2:6][CH3:7])(=[O:3])[CH3:2].[CH3:33][S-:34].[Na+]>CN(C=O)C.CCOC(C)=O>[C:1]([O:4][CH:5]([C@@H:8]1[CH2:12][C@@H:11]([S:34][CH3:33])[C@H:10]([N:21]2[C:25]3[N:26]=[C:27]([NH2:31])[NH:28][C:29](=[O:30])[C:24]=3[S:23][C:22]2=[O:32])[O:9]1)[CH2:6][CH3:7])(=[O:3])[CH3:2]

Participants

5

Reactant 2

HCID 4378561Sodium methanethiolateHCID 1371086981-[(2S,4S,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-(trifluoromethylsulfonyloxy)tetrahydrofuran-2-yl]propyl acetate2×

Product 1

HCID 1371087581-[(2S,4R,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-methylsulfanyl-tetrahydrofuran-2-yl]propyl acetate

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a stirred solution of 1-[(2S,4S,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-(trifluoromethylsulfonyloxy)tetrahydrofuran-2-yl]propyl acetate (compound 22d, 420 mg, 0.83 mmol) in DMF (7 mL) was added sodium thiomethoxide (84 mg, 1.2 mmol). After being stirred at room temperature for 2 hours, the resulting solution was diluted with EtOAc, washed with brine, dried over Na2SO4 and concentrated in vacuo to afford crude product of 1-[(2S,4R,5R)-5-(5-amino-2,7-dioxo-6H-thiazolo[4,5-d]pyrimidin-3-yl)-4-methylsulfanyl-tetrahydrofuran-2-yl]propyl acetate (compound 22e), which was used in next step without further purification. MS obsd. (ESI−) [(M−H)−]: 399.

Workup

  1. washwashed with brine
  2. dry with materialdried over Na2SO4
  3. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-c3eb5263c2a543fdb242cbd904211e85
Source dataset
uspto-grants-2016_09
Patent number
US09441008B2

Reaction notes

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