Lithium hydroxide, monohydrate → methyl 7-[(1R,2R,3R,5S)-5-acetoxy-2-((E)-4,4-difluoro-3-oxo-4-phenyl-1-butenyl)-3-(2-tetrahydropyranyloxy)cyclopentyl]heptanate

HRID 883717노트

반응식

HRID 883717 반응식
[F:1][C:2]([F:18])([C:12]1[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1)[C:3](=[O:11])[CH2:4]P(=O)(OC)OC.O.[OH-].[Li+].[C:22]([O:25][C@@H:26]1[C@H:30]([CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][C:37]([O:39][CH3:40])=[O:38])[C@@H:29]([CH:41]=O)[C@H:28]([O:43][CH:44]2[CH2:49][CH2:48][CH2:47][CH2:46][O:45]2)[CH2:27]1)(=[O:24])[CH3:23]>COC(C)(C)C.O>[C:22]([O:25][C@@H:26]1[C@H:30]([CH2:31][CH2:32][CH2:33][CH2:34][CH2:35][CH2:36][C:37]([O:39][CH3:40])=[O:38])[C@@H:29](/[CH:41]=[CH:4]/[C:3](=[O:11])[C:2]([F:1])([F:18])[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)[C@H:28]([O:43][CH:44]2[CH2:49][CH2:48][CH2:47][CH2:46][O:45]2)[CH2:27]1)(=[O:24])[CH3:23]

참가 물질

6

반응물 3

HCID 168937Lithium hydroxide, monohydrateHCID 11729034methyl 7-[(1R,2R,3R,5S)-5-acetoxy-2-formyl-3-(2-tetrahydropyranyl-oxy)cyclopentyl]heptanateHCID 21949543Dimethyl (3,3-difluoro-2-oxo-3-phenylpropyl)phosphonate

생성물 1

HCID 59514701methyl 7-[(1R,2R,3R,5S)-5-acetoxy-2-((E)-4,4-difluoro-3-oxo-4-phenyl-1-butenyl)-3-(2-tetrahydropyranyloxy)cyclopentyl]heptanate수율 74.5%

시약·촉매·용매 2

HCID 962Water용매2회HCID 15413tert-Butyl methyl ether용매2회

실험 절차

To a solution of dimethyl (3,3-difluoro-2-oxo-3-phenylpropyl)phosphonate (6) (0.262 g, 0.942 mmol) in t-butyl methyl ether (7 ml), lithium hydroxide monohydrate (38.2 mg, 0.910 mmol) was added and the mixture was stirred for one hour at room temperature. A solution of methyl 7-[(1R,2R,3R,5S)-5-acetoxy-2-formyl-3-(2-tetrahydropyranyloxy)cyclopentyl]heptanate (2) (0.250 g, 0.627 mmol) in t-butyl methyl ether (3 ml) and water (0.3 ml) were added thereto, and the mixed solution was heat refluxed for approximately 48 hours. After cooling to room temperature, the reaction mixture was added to water, and extracted twice with t-butyl methyl ether. The organic layers were combined, sequentially washed with water, saturated sodium bicarbonate water and saturated aqueous sodium chloride, and then dried with anhydrous magnesium sulfate. After concentration under reduced pressure, the residue was purified by silica gel column chromatography (Merck Art. 9385: 200 g; ethyl acetate:hexane =2:3). The fractions containing impurities were re-purified by silica gel column chromatography (Merck Art. 9385: 120 g; ethyl acetate:hexane =2:3), to give methyl 7-[(1R,2R,3R,5S)-5-acetoxy-2-((E)-4,4-difluoro-3-oxo-4-phenyl-1-butenyl)-3-(2-tetrahydropyranyloxy)cyclopentyl]heptanate (7) (0.257 g; 0.467 mmol; yield: 74.4%) as a colorless oil.

후처리

  1. temperaturethe mixed solution was heat
  2. temperaturerefluxed for approximately 48 hours
  3. temperatureAfter cooling to room temperature
  4. extractionextracted twice with t-butyl methyl ether
  5. washsequentially washed with water, saturated sodium bicarbonate water and saturated aqueous sodium chloride
  6. dry with materialdried with anhydrous magnesium sulfate
  7. concentrationAfter concentration under reduced pressure
  8. customthe residue was purified by silica gel column chromatography (Merck Art. 9385: 200 g; ethyl acetate:hexane =2:3)
  9. additionThe fractions containing impurities
  10. customwere re-purified by silica gel column chromatography (Merck Art. 9385: 120 g; ethyl acetate:hexane =2:3)

출처 및 근거

ORD 기록
ord-ab757061399e4f07a595490095e072e6
출처 데이터셋
uspto-grants-2012_08
특허 번호
US08236969B2

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