Methanesulfonic Acid → (5S)-5-Ethyl-2-[5-(3-{[(2S)-1-methoxypropan-2-yl]oxy}-5-[(tripropan-2-ylsilyl)oxy]phenyl)-1H-pyrrol-2-yl]-4,5-dihydro-1,3-oxazole

HRID 909615노트

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HRID 909615 반응식
O[C@H:2]([CH2:35][CH3:36])[CH2:3][NH:4][C:5]([C:7]1[NH:8][C:9]([C:12]2[CH:17]=[C:16]([O:18][Si:19]([CH:26]([CH3:28])[CH3:27])([CH:23]([CH3:25])[CH3:24])[CH:20]([CH3:22])[CH3:21])[CH:15]=[C:14]([O:29][C@@H:30]([CH3:34])[CH2:31][O:32][CH3:33])[CH:13]=2)=[CH:10][CH:11]=1)=[O:6].CS(O)(=O)=O.C(N(CC)CC)C.[Cl-].[NH4+]>O1CCCC1>[CH2:35]([C@@H:2]1[O:6][C:5]([C:7]2[NH:8][C:9]([C:12]3[CH:17]=[C:16]([O:18][Si:19]([CH:23]([CH3:25])[CH3:24])([CH:26]([CH3:28])[CH3:27])[CH:20]([CH3:21])[CH3:22])[CH:15]=[C:14]([O:29][C@@H:30]([CH3:34])[CH2:31][O:32][CH3:33])[CH:13]=3)=[CH:10][CH:11]=2)=[N:4][CH2:3]1)[CH3:36]

참가 물질

6

반응물 4

HCID 6395Methanesulfonic AcidHCID 8471TriethylamineHCID 25517Ammonium ChlorideHCID 66890347N-[(2R)-2-Hydroxybutyl]-5-(3-{[(2S)-1-methoxypropan-2-yl]oxy}-5-[(tripropan-2-ylsilyl)oxy]phenyl)-1H-pyrrole-2-carboxamide

생성물 1

HCID 66891446(5S)-5-Ethyl-2-[5-(3-{[(2S)-1-methoxypropan-2-yl]oxy}-5-[(tripropan-2-ylsilyl)oxy]phenyl)-1H-pyrrol-2-yl]-4,5-dihydro-1,3-oxazole수율 100.4%

시약·촉매·용매 1

HCID 8028Tetrahydrofuran용매

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온도
50 °C

실험 절차

N-[(2R)-2-Hydroxybutyl]-5-(3-{[(2S)-1-methoxypropan-2-yl]oxy}-5-[(tripropan-2-ylsilyl)oxy]phenyl)-1H-pyrrole-2-carboxamide (1.01 g, 1.95 mmol) synthesized in Example (106d) was dissolved in tetrahydrofuran (40 mL), and anhydrous methanesulfonic acid (600 mg, 3.44 mmol) and triethylamine (1.60 mL, 11.48 mmol) were added, followed by stirring at 50° C. for 8 hours under nitrogen atmosphere. To the reaction solution, a saturated aqueous ammonium chloride solution (50 mL) was added, and extraction was carried out with methylene chloride (80 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: ethyl acetate/hexane=50%-70%) to afford the desired compound (980 mg, yield 100%) as a yellow solid.

후처리

  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: ethyl acetate/hexane=50%-70%)

출처 및 근거

ORD 기록
ord-6683bbfd28ff4319b0d8fa9bc983d272
출처 데이터셋
uspto-grants-2011_09
특허 번호
US08017610B2

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