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

HRID 909626
ノート
印刷プレビュー

反応式

HRID 909626 の反応式
[OH:1][C@H:2]([CH3:36])[C@H:3]([NH:5][C:6]([C:8]1[NH:9][C:10]([C:13]2[CH:18]=[C:17]([O:19][Si:20]([CH:27]([CH3:29])[CH3:28])([CH:24]([CH3:26])[CH3:25])[CH:21]([CH3:23])[CH3:22])[CH:16]=[C:15]([O:30][C@@H:31]([CH3:35])[CH2:32][O:33][CH3:34])[CH:14]=2)=[CH:11][CH:12]=1)=O)[CH3:4].CS(O)(=O)=O.C(N(CC)CC)C.[Cl-].[NH4+]>O1CCCC1>[CH3:34][O:33][CH2:32][C@@H:31]([O:30][C:15]1[CH:14]=[C:13]([C:10]2[NH:9][C:8]([C:6]3[O:1][C@@H:2]([CH3:36])[C@@H:3]([CH3:4])[N:5]=3)=[CH:12][CH:11]=2)[CH:18]=[C:17]([O:19][Si:20]([CH:24]([CH3:26])[CH3:25])([CH:21]([CH3:23])[CH3:22])[CH:27]([CH3:29])[CH3:28])[CH:16]=1)[CH3:35]
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 6395Methanesulfonic AcidHCID 8471TriethylamineHCID 25517Ammonium ChlorideHCID 66681067N-[(2R,3R)-3-Hydroxybutan-2-yl]-5-(3-{[(2S)-1-methoxypropan-2-yl]oxy}-5-[(tripropan-2-ylsilyl)oxy]phenyl)-1H-pyrrole-2-carboxamide

生成物 1

HCID 66683078(4R,5S)-2-[5-(3-{[(2S)-1-Methoxypropan-2-yl]oxy}-5-[(tripropan-2-ylsilyl)oxy]phenyl)-1H-pyrrol-2-yl]-4,5-dimethyl-4,5-dihydro-1,3-oxazole
収率 100.6%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

N-[(2R,3R)-3-Hydroxybutan-2-yl]-5-(3-{[(2S)-1-methoxypropan-2-yl]oxy}-5-[(tripropan-2-ylsilyl)oxy]phenyl)-1H-pyrrole-2-carboxamide (722 mg, 1.39 mmol) synthesized in Example (109a) was dissolved in tetrahydrofuran (30 mL), and anhydrous methanesulfonic acid (430 mg, 2.47 mmol) and triethylamine (1.20 mL, 8.61 mmol) were added, and stirring was carried out at 50° C. overnight under nitrogen atmosphere. The reaction solution was brought back to room temperature, and a saturated aqueous ammonium chloride solution (50 mL) was added, followed by extraction with methylene chloride (50 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=40%-70%) to afford the desired compound (700 mg, yield 100%) as a yellow liquid.

後処理

  1. customwas brought back to room temperature
  2. extractionfollowed by extraction with methylene chloride (50 mL)
  3. washThe organic layer was washed with saturated brine
  4. dry with materialsubsequently dried over anhydrous magnesium sulfate
  5. distillationThe solvent was distilled off under reduced pressure
  6. customthe resulting residue was purified
  7. washsilica gel column chromatography (elution solvent: ethyl acetate/hexane=40%-70%)

出典と根拠

ORDレコード
ord-6172a7f32d39479a8faee27399bb67fb
出典データセット
uspto-grants-2011_09
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US08017610B2

反応ノート

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