Cesium carbonate → (3R,4R)-N-tert-butoxy-3-methyl-4-(4-((2-methylquinolin-4-yl)methoxy)phenylsulfonamido)-tetrahydro-2H-pyran-3-carboxamide

HRID 736787Notes

Reaction equation

HRID 736787 reaction equation
[C:1]([O:5][NH:6][C:7]([C@:9]1([CH3:26])[C@H:14]([NH:15][S:16]([C:19]2[CH:24]=[CH:23][C:22]([OH:25])=[CH:21][CH:20]=2)(=[O:18])=[O:17])[CH2:13][CH2:12][O:11][CH2:10]1)=[O:8])([CH3:4])([CH3:3])[CH3:2].C(=O)([O-])[O-].[Cs+].[Cs+].Cl[CH2:34][C:35]1[C:44]2[C:39](=[CH:40][CH:41]=[CH:42][CH:43]=2)[N:38]=[C:37]([CH3:45])[CH:36]=1>CN(C=O)C.C(OCC)(=O)C>[C:1]([O:5][NH:6][C:7]([C@:9]1([CH3:26])[C@H:14]([NH:15][S:16]([C:19]2[CH:24]=[CH:23][C:22]([O:25][CH2:34][C:35]3[C:44]4[C:39](=[CH:40][CH:41]=[CH:42][CH:43]=4)[N:38]=[C:37]([CH3:45])[CH:36]=3)=[CH:21][CH:20]=2)(=[O:18])=[O:17])[CH2:13][CH2:12][O:11][CH2:10]1)=[O:8])([CH3:4])([CH3:2])[CH3:3]

Participants

6

Reactant 3

HCID 10796Cesium carbonateHCID 115357194-(Chloromethyl)-2-methylquinolineHCID 86607887(3R,4R)-N-tert-butoxy-4-(4-hydroxyphenylsulfonamido)-3-methyl-tetrahydro-2H-pyran-3-carboxamide

Product 1

HCID 86607888(3R,4R)-N-tert-butoxy-3-methyl-4-(4-((2-methylquinolin-4-yl)methoxy)phenylsulfonamido)-tetrahydro-2H-pyran-3-carboxamideYield 56%

Reagents, catalysts & solvents 2

HCID 6228DimethylformamideSolventHCID 8857Ethyl AcetateSolvent

Procedure

The crude (3R,4R)-N-tert-butoxy-4-(4-hydroxyphenylsulfonamido)-3-methyl-tetrahydro-2H-pyran-3-carboxamide (1.76 mmol) from Step 9 was dissolved in DMF (20 mL) and cesium carbonate (2.9 g, 8.80 mmol, 5.0 eq) and 4-chloromethyl-2-methylquinoline (602 mg, 2.64 mmol, 1.5 eq) were added. The mixture was stirred at room temperature overnight and then diluted with ethyl acetate (200 mL) and washed with water (100 mL×3). The aqueous layer was re-extracted with ethyl acetate. The combined organic layers were washed with brine, dried over MgSO4 and concentrated. The residue was purified by chromatography on silica eluting with 75% ethyl acetate/hexane to yield 0.53 g (56% for three steps) of (3R,4R)-N-tert-butoxy-3-methyl-4-(4-((2-methylquinolin-4-yl)methoxy)phenylsulfonamido)-tetrahydro-2H-pyran-3-carboxamide as white solid. MS: (M+H)+=542.0

Workup

  1. washwashed with water (100 mL×3)
  2. extractionThe aqueous layer was re-extracted with ethyl acetate
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over MgSO4
  5. concentrationconcentrated
  6. customThe residue was purified by chromatography on silica eluting with 75% ethyl acetate/hexane

Sources & evidence

ORD record
ord-ebdfb3fa18d0467eab5eca3c7e828e05
Source dataset
uspto-grants-2009_09
Patent number
US07595327B2

Reaction notes

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