Citric Acid → HCID 10792589、化合物

HRID 1003938ノート

反応式

HRID 1003938 の反応式
[O:1]1[CH:5]=[CH:4][C:3]2[CH:6]=[C:7]([CH2:10][CH2:11][C:12]([C:14]3[C:19]([OH:20])=[CH:18][C:17]([CH3:21])=[CH:16][C:15]=3[O:22][C@@H:23]3[O:31][C@H:30]([CH2:32][OH:33])[C@@H:28]([OH:29])[C@H:26]([OH:27])[C@H:24]3[OH:25])=[O:13])[CH:8]=[CH:9][C:2]1=2.C(N(CC)CC)C.[C:41](Cl)(=[O:43])[CH3:42].C(O)(=O)[CH2:46][C:47](CC(O)=O)(C(O)=O)[OH:48]>CN(C)C(=O)C>[O:1]1[CH:5]=[CH:4][C:3]2[CH:6]=[C:7]([CH2:10][CH2:11][C:12]([C:14]3[C:19]([O:20][C:41](=[O:43])[CH3:42])=[CH:18][C:17]([CH3:21])=[CH:16][C:15]=3[O:22][C@@H:23]3[O:31][C@H:30]([CH2:32][O:33][C:47](=[O:48])[CH3:46])[C@@H:28]([OH:29])[C@H:26]([OH:27])[C@H:24]3[OH:25])=[O:13])[CH:8]=[CH:9][C:2]1=2

参加物

6

反応物 4

HCID 311Citric AcidHCID 6367Acetyl chlorideHCID 8471TriethylamineHCID 6918439T-1095A

生成物 1

HCID 10792589HCID 10792589、化合物

試薬・触媒・溶媒 1

HCID 31374Dimethylacetamide溶媒

実験手順

3-(5-Benzo[b]furanyl)-2'-(β-D-glucopyranosyloxy)-6'-hydroxy-4'-methylpropiophenone (500 mg) is dissolved in N,N-dimethylacetamide (3.5 ml), and thereto is added triethylamine (315 mg). To the mixture is added dropwise acetyl chloride (282 mg) under ice-cooling, and the mixture is stirred under ice-cooling for 30 minutes, and stirred at room temperature overnight. The reaction mixture is poured into chilled 10% aqueous citric acid solution, and extracted with ethyl acetate. The organic layer is washed with water, dried, and concentrated under reduced pressure. The residue is purified by silica gel column chromatography (solvent; chloroform/methanol) to give 3-(5-benzo[b]-furanyl)-2'-(6-O-acetyl-β-D-glucopyranosyloxy)-6'-acetoxy-4'-methylpropiophenone (304 mg).

後処理

  1. temperaturecooling
  2. temperaturecooling for 30 minutes
  3. stirringstirred at room temperature overnight
  4. additionThe reaction mixture is poured
  5. extractionextracted with ethyl acetate
  6. washThe organic layer is washed with water
  7. customdried
  8. concentrationconcentrated under reduced pressure
  9. customThe residue is purified by silica gel column chromatography (solvent; chloroform/methanol)

出典と根拠

ORDレコード
ord-62e821b465464fa2878e9adefd2f4229
出典データセット
uspto-grants-2000_04
特許番号
US06048842

反応ノート

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