HCID 67115761、化合物 → acetic acid (2R,3R,4R,5S,6S)-3,4,5-triacetoxy-6-[3-(3-amino-4-hydroxy-benzyl)-4-chloro-phenyl]-tetrahydro-pyran-2-ylmethyl ester

HRID 1695846

反応式

HRID 1695846 の反応式
[C:1]([O:4][C@H:5]1[C@H:10]([O:11][C:12](=[O:14])[CH3:13])[C@@H:9]([O:15][C:16](=[O:18])[CH3:17])[C@H:8]([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[C:21]([CH2:26][C:27]3[CH:32]=[CH:31][C:30]([OH:33])=[C:29]([N+:34]([O-])=O)[CH:28]=3)[CH:20]=2)[O:7][C@@H:6]1[CH2:37][O:38][C:39](=[O:41])[CH3:40])(=[O:3])[CH3:2]>C(O)(=O)C.[Fe]>[C:1]([O:4][C@H:5]1[C@H:10]([O:11][C:12](=[O:14])[CH3:13])[C@@H:9]([O:15][C:16](=[O:18])[CH3:17])[C@H:8]([C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[C:21]([CH2:26][C:27]3[CH:32]=[CH:31][C:30]([OH:33])=[C:29]([NH2:34])[CH:28]=3)[CH:20]=2)[O:7][C@@H:6]1[CH2:37][O:38][C:39](=[O:41])[CH3:40])(=[O:3])[CH3:2]

参加物

4

反応物 1

HCID 67115761HCID 67115761、化合物

生成物 1

HCID 67115896acetic acid (2R,3R,4R,5S,6S)-3,4,5-triacetoxy-6-[3-(3-amino-4-hydroxy-benzyl)-4-chloro-phenyl]-tetrahydro-pyran-2-ylmethyl ester収率 79.5%

試薬・触媒・溶媒 2

HCID 23925Iron触媒HCID 176Acetic Acid溶媒

反応条件

温度
60 °C

実験手順

To a stirred solution of acetic acid (2R,3R,4R,5S,6S)-3,4,5-triacetoxy-6-[4-chloro-3-(4-hydroxy-3-nitro-benzyl)-phenyl]-tetrahydro-pyran-2-ylmethyl ester (1.71 g, 2.9 mmol) in glacial acetic acid (15 mL) was added iron powder (3.22 g, 57.7 mmol). After stirring at 60° C. for 15 min, the reaction mixture was filtered through a celite bed. The filtrate was concentrated under reduced pressure, and the resulting residue was taken up in ethyl acetate and the solution was washed with water, saturated aqueous sodium bicarbonate solution, and brine. The organic layer was dried over anhydrous sodium sulfate and concentrated to a residue which was purified by silica gel column chromatography to furnish acetic acid (2R,3R,4R,5S,6S)-3,4,5-triacetoxy-6-[3-(3-amino-4-hydroxy-benzyl)-4-chloro-phenyl]-tetrahydro-pyran-2-ylmethyl ester (1.3 g)

後処理

  1. filtrationthe reaction mixture was filtered through a celite bed
  2. concentrationThe filtrate was concentrated under reduced pressure
  3. washthe solution was washed with water, saturated aqueous sodium bicarbonate solution, and brine
  4. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  5. concentrationconcentrated to a residue which
  6. customwas purified by silica gel column chromatography

出典と根拠

ORDレコード
ord-c220aa50ee74476da8bad587ed6fcc12
出典データセット
uspto-grants-2012_04
特許番号
US08163704B2

関連ノート

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