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Boron tribromide → (2S)-2-(3-{5-[(4R,5S)-4-(Hydroxymethyl)-5-methyl-4,5-dihydro-1,3-oxazol-2-yl]-1H-pyrrol-2-yl}-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenoxy)propan-1-ol

HRID 1964653
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HRID 1964653 반응식
C[O:2][CH2:3][C@H:4]([CH3:36])[O:5][C:6]1[CH:7]=[C:8]([C:23]2[NH:27][C:26]([C:28]3[O:29][C@@H:30]([CH3:35])[C@@H:31]([CH2:33][OH:34])[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.C(=O)([O-])O.[Na+]>C(Cl)Cl>[OH:34][CH2:33][C@@H:31]1[C@H:30]([CH3:35])[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:21])=[O:20])=[CH:17][CH:18]=4)[CH:9]=3)[O:5][C@@H:4]([CH3:36])[CH2:3][OH:2])=[CH:24][CH:25]=2)=[N:32]1
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참가 물질

5

반응물 3

HCID 25134Boron tribromideHCID 516892Sodium BicarbonateHCID 44184024{(4R,5S)-2-[5-(3-[(1S)-2-Methoxy-1-methylethoxy]-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenyl)-1H-pyrrol-2-yl]-5-methyl-4,5-dihydro-1,3-oxazol-4-yl}methanol

생성물 1

HCID 58065504(2S)-2-(3-{5-[(4R,5S)-4-(Hydroxymethyl)-5-methyl-4,5-dihydro-1,3-oxazol-2-yl]-1H-pyrrol-2-yl}-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenoxy)propan-1-ol수율 82%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

{(4R,5S)-2-[5-(3-[(1S)-2-Methoxy-1-methylethoxy]-5-{[6-(methylsulfonyl)pyridin-3-yl]oxy}phenyl)-1H-pyrrol-2-yl]-5-methyl-4,5-dihydro-1,3-oxazol-4-yl}methanol (178 mg, 0.35 mmol) synthesized in Example (91d) was dissolved in methylene chloride (5 mL), and boron tribromide (1.0 mol/L methylene chloride solution, 0.70 mL, 0.70 mmol) was added at −78° C., and subsequently the temperature was brought back to room temperature and stirring was carried out for 45 minutes. To the reaction solution, a saturated aqueous sodium hydrogencarbonate solution was added, and extraction was carried out with methylene chloride. The organic layer was washed with saturated brine, and subsequently dried over sodium 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=0%-4%) to afford the desired compound (142 mg, yield 82%) as a white solid.

후처리

  1. customwas brought back to room temperature
  2. extractionextraction
  3. washThe organic layer was washed with saturated brine
  4. dry with materialsubsequently dried over sodium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customthe resulting residue was purified
  7. washsilica gel column chromatography (elution solvent: methanol/methylene chloride=0%-4%)

출처 및 근거

ORD 기록
ord-5becaad909064d119b0f0b0f035bb7e2
출처 데이터셋
uspto-grants-2013_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US08415359B2

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