(3aR,5R,7aS)-5-benzyloxymethyl-7a-(5-bromo-2-fluorophenyl)hexahydropyrano[3,4-c]isoxazole → [(2R,4R,5S)-5-amino-2-benzyloxymethyl-5-(5-bromo-2-fluorophenyl)tetrahydropyran-4-yl]methanol

HRID 217995ノート

反応式

HRID 217995 の反応式
[CH2:1]([O:8][CH2:9][C@@H:10]1[O:18][CH2:17][C@:13]2([C:19]3[CH:24]=[C:23]([Br:25])[CH:22]=[CH:21][C:20]=3[F:26])[NH:14][O:15][CH2:16][C@@H:12]2[CH2:11]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1>C(O)(=O)C.[Zn]>[NH2:14][C@@:13]1([C:19]2[CH:24]=[C:23]([Br:25])[CH:22]=[CH:21][C:20]=2[F:26])[CH2:17][O:18][C@@H:10]([CH2:9][O:8][CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[CH2:11][C@H:12]1[CH2:16][OH:15]

参加物

4

反応物 1

HCID 59281209(3aR,5R,7aS)-5-benzyloxymethyl-7a-(5-bromo-2-fluorophenyl)hexahydropyrano[3,4-c]isoxazole

生成物 1

HCID 59281210[(2R,4R,5S)-5-amino-2-benzyloxymethyl-5-(5-bromo-2-fluorophenyl)tetrahydropyran-4-yl]methanol収率 80.6%

試薬・触媒・溶媒 2

HCID 23994Zinc触媒HCID 176Acetic Acid溶媒

実験手順

Zinc powder (4.24 g) was added to a solution of (3aR,5R,7aS)-5-benzyloxymethyl-7a-(5-bromo-2-fluorophenyl)hexahydropyrano[3,4-c]isoxazole (2.74 g) in acetic acid (40 ml). After stirring at room temperature overnight, the insoluble matter was removed by filtration through celite. The solvent was evaporated under reduced pressure and ice was added to the residue, followed by neutralization with a 5 N sodium hydroxide solution. The aqueous layer was extracted with dichloromethane, and the organic layer was dried over anhydrous magnesium sulfate. The solvent was evaporated under reduced pressure and the residue was purified by silica gel column chromatography to obtain the title compound (2.22 g).

後処理

  1. customthe insoluble matter was removed by filtration through celite
  2. customThe solvent was evaporated under reduced pressure and ice
  3. additionwas added to the residue
  4. extractionThe aqueous layer was extracted with dichloromethane
  5. dry with materialthe organic layer was dried over anhydrous magnesium sulfate
  6. customThe solvent was evaporated under reduced pressure
  7. customthe residue was purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-9f429fb9f5054911adb48b0c7b3452ce
出典データセット
uspto-grants-2012_06
特許番号
US08198269B2

反応ノート

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