Sodium Hydroxide → HCID 58065513, compound

HRID 909569Notes

Reaction equation

HRID 909569 reaction equation
C[O:2][CH2:3][C@H:4]([CH3:35])[O:5][C:6]1[CH:7]=[C:8]([C:23]2[NH:27][C:26]([C:28]3[O:29][C@@H:30]([CH2:33][OH:34])[CH2:31][N:32]=3)=[CH:25][CH:24]=2)[CH:9]=[C:10]([O:12][C:13]2[CH:14]=[N:15][C:16]([S:19]([CH3:22])(=[O:21])=[O:20])=[CH:17][CH:18]=2)[CH:11]=1.B(Br)(Br)Br.[OH-].[Na+]>C(Cl)Cl>[OH:34][CH2:33][C@@H:30]1[O:29][C:28]([C:26]2[NH:27][C:23]([C:8]3[CH:7]=[C:6]([CH:11]=[C:10]([O:12][C:13]4[CH:14]=[N:15][C:16]([S:19]([CH3:22])(=[O:20])=[O:21])=[CH:17][CH:18]=4)[CH:9]=3)[O:5][C@@H:4]([CH3:35])[CH2:3][OH:2])=[CH:24][CH:25]=2)=[N:32][CH2:31]1

Participants

5

Reactant 3

HCID 14798Sodium HydroxideHCID 25134Boron tribromideHCID 58065486{(5R)-2-[5-(3-[(1S)-2-Methoxy-1-methylethoxy]-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenyl)-1H-pyrrol-2-yl]-4,5-dihydro-1,3-oxazol-5-yl}methanol

Product 1

HCID 58065513HCID 58065513, compoundYield 29.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

{(5R)-2-[5-(3-[(1S)-2-Methoxy-1-methylethoxy]-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenyl)-1H-pyrrol-2-yl]-4,5-dihydro-1,3-oxazol-5-yl}methanol (520 mg, 1.04 mmol) synthesized in Example (82b) was dissolved in methylene chloride (10 mL), and boron tribromide (1.0 mol/L methylene chloride solution, 2.00 mL, 2.00 mmol) was added dropwise at −78° C., followed by stirring at room temperature for 4 hours under nitrogen atmosphere. To this reaction solution, a 1N aqueous sodium hydroxide solution (20 mL) was added, and extraction was carried out with methylene chloride (20 mL). The organic layer was washed with saturated brine, and subsequently dried over anhydrous magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was purified using silica gel column chromatography (elution solvent: methanol/methylene chloride=3%-5%) to afford the desired compound (148 mg, yield 29%) as a white solid.

Workup

  1. extractionextraction
  2. washThe organic layer was washed with saturated brine
  3. dry with materialsubsequently dried over anhydrous magnesium sulfate
  4. distillationThe solvent was distilled off under reduced pressure
  5. customthe resulting residue was purified
  6. washsilica gel column chromatography (elution solvent: methanol/methylene chloride=3%-5%)

Sources & evidence

ORD record
ord-b22d9ad9ef2a4d10b956a968379246a8
Source dataset
uspto-grants-2011_09
Patent number
US08017610B2

Reaction notes

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