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 883717ノート

反応式

HRID 883717 の反応式
[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]

参加物

6

反応物 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

生成物 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]heptanate収率 74.5%

試薬・触媒・溶媒 2

HCID 962Water溶媒2 回HCID 15413tert-Butyl methyl ether溶媒2 回

実験手順

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.

後処理

  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)

出典と根拠

ORDレコード
ord-ab757061399e4f07a595490095e072e6
出典データセット
uspto-grants-2012_08
特許番号
US08236969B2

反応ノート

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