反応式
[CH2:1]([C:3]1[C:23]([NH2:24])=[C:6]2[C:7]([O:21][CH3:22])=[CH:8][CH:9]=[C:10]([C:11]3[C:16]([CH3:17])=[CH:15][C:14]([CH3:18])=[CH:13][C:12]=3[O:19][CH3:20])[N:5]2[N:4]=1)[CH3:2].[CH3:25][CH2:26][C:27](=O)[CH2:28][CH3:29].C(O[BH-](OC(=O)C)OC(=O)C)(=O)C.[Na+].[OH-].[Na+]>C(O)(=O)C>[CH2:1]([C:3]1[C:23]([NH:24][CH:27]([CH2:28][CH3:29])[CH2:26][CH3:25])=[C:6]2[C:7]([O:21][CH3:22])=[CH:8][CH:9]=[C:10]([C:11]3[C:16]([CH3:17])=[CH:15][C:14]([CH3:18])=[CH:13][C:12]=3[O:19][CH3:20])[N:5]2[N:4]=1)[CH3:2]参加物
反応物 4
生成物 1
試薬・触媒・溶媒 1
実験手順
To a solution of 2-ethyl-4-methoxy-7-(2-methoxy-4,6-dimethylphenyl)pyrazolo[1,5-a]pyridin-3-amine (100 mg) in acetic acid (10 mL) there was added 3-pentanone (0.04 mL), and then sodium triacetoxyborohydride (85.0 mg) was slowly added at room temperature and the mixture was stirred for 3 hours. A 5 N aqueous sodium hydroxide solution was added while cooling on ice, and then extraction was performed with ethyl acetate, the organic layer washed with saturated aqueous sodium hydrogencarbonate and brine and dried over magnesium sulfate, and the solvent was distilled off under reduced pressure. The obtained residue was subjected to silica gel column chromatography (10 g), and the title compound (69 mg) was obtained from the n-hexane:ethyl acetate (5:1) fraction as yellow crystals.
後処理
- temperaturewhile cooling on ice
- extractionextraction
- washthe organic layer washed with saturated aqueous sodium hydrogencarbonate and brine
- dry with materialdried over magnesium sulfate
- distillationthe solvent was distilled off under reduced pressure
出典と根拠
- ORDレコード
- ord-9b0e34d991ee4fb590ca967e38be7842
- 出典データセット
- uspto-grants-2009_12
- 特許番号
- US07625925B2
関連ノート
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