Lithium borohydride → N-[2-[[(2,3-difluorophenyl)methyl]thio]-6-[(1R)-2-hydroxy-1-methylethoxy]-4-pyrimidinyl]-2-thiazolesulfonamide

HRID 1024851Notes

Reaction equation

HRID 1024851 reaction equation
C([O:3][C:4](=O)[C@H:5]([O:7][C:8]1[CH:13]=[C:12]([NH:14][S:15]([C:18]2[S:19][CH:20]=[CH:21][N:22]=2)(=[O:17])=[O:16])[N:11]=[C:10]([S:23][CH2:24][C:25]2[CH:30]=[CH:29][CH:28]=[C:27]([F:31])[C:26]=2[F:32])[N:9]=1)[CH3:6])C.[BH4-].[Li+]>C1COCC1>[F:32][C:26]1[C:27]([F:31])=[CH:28][CH:29]=[CH:30][C:25]=1[CH2:24][S:23][C:10]1[N:11]=[C:12]([NH:14][S:15]([C:18]2[S:19][CH:20]=[CH:21][N:22]=2)(=[O:16])=[O:17])[CH:13]=[C:8]([O:7][C@H:5]([CH3:6])[CH2:4][OH:3])[N:9]=1

Participants

4

Reactant 2

HCID 4148881Lithium borohydrideHCID 670512212-[[2-[[(2,3-difluorophenyl)methyl]thio]-6-[(2-thiazolylsulfonyl)amino]-4-pyrimidinyl]oxy]-(2R)-propanoic acid ethyl ester

Product 1

HCID 11712587N-[2-[[(2,3-difluorophenyl)methyl]thio]-6-[(1R)-2-hydroxy-1-methylethoxy]-4-pyrimidinyl]-2-thiazolesulfonamide

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 2-[[2-[[(2,3-difluorophenyl)methyl]thio]-6-[(2-thiazolylsulfonyl)amino]-4-pyrimidinyl]oxy]-(2R)-propanoic acid ethyl ester (the product from step ii) (0.11 g) in THF (3 mL) was added lithium borohydride (2M solution in THF, 0.23 mL) and the mixture was mixture was stirred at ambient temperature for 20 h. The reaction mixture was cooled to 0° C., quenched with 0.5M HCl solution and the aqueous was extracted with EtOAc (×2). The combined organic layers were dried (MgSO4), filtered and evaporated. The residue was purified by column chromatography on silica gel using MeOH/DCM (99:1 to 98:2 gradient) as eluent to give the title compound as a white solid. Yield: 15 mg

Workup

  1. temperatureThe reaction mixture was cooled to 0° C.
  2. customquenched with 0.5M HCl solution
  3. extractionthe aqueous was extracted with EtOAc (×2)
  4. dry with materialThe combined organic layers were dried (MgSO4)
  5. filtrationfiltered
  6. customevaporated
  7. customThe residue was purified by column chromatography on silica gel

Sources & evidence

ORD record
ord-5f24b006cdc140f3bd0a20f2782cd1cc
Source dataset
uspto-grants-2014_05
Patent number
US08722883B2

Reaction notes

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