反応式
[N:1]1([C:7]2[CH:16]=[C:15]3[C:10]([C:11](=[O:23])[C:12]([C:20]([OH:22])=[O:21])=[CH:13][N:14]3[CH:17]3[CH2:19][CH2:18]3)=[C:9]([CH3:24])[C:8]=2[F:25])[CH2:6][CH2:5][NH:4][CH2:3][CH2:2]1.[C:26](OC(=O)C)(=[O:28])[CH3:27].Cl>[OH-].[Na+]>[C:26]([N:4]1[CH2:5][CH2:6][N:1]([C:7]2[CH:16]=[C:15]3[C:10]([C:11](=[O:23])[C:12]([C:20]([OH:22])=[O:21])=[CH:13][N:14]3[CH:17]3[CH2:18][CH2:19]3)=[C:9]([CH3:24])[C:8]=2[F:25])[CH2:2][CH2:3]1)(=[O:28])[CH3:27]参加物
5
反応物 3
生成物 1
試薬・触媒・溶媒 1
実験手順
To a solution of 7-(1-piperazinyl)-1-cyclopropyl-6-fluoro-5-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (40 mg) in 5% sodium hydroxide (2 ml) is added acetic anhydride (0.1 ml) at room temperature. After the mixture is made acidic with dilute hydrochloric acid, the resultant is extracted with dichloromethane and the extract is dried over magnesium sulfate. After concentrating, the obtained residue is recrystallized from ethanol to give 7-(4-acetyl-1-piperazinyl)-1-cyclopropyl-6-fluoro-5-methyl-1,4-dihydro-4-oxoquinoline-3-carboxylic acid (29 mg), as white powder, m.p. 261°-263° C.
後処理
- extractionthe resultant is extracted with dichloromethane
- dry with materialthe extract is dried over magnesium sulfate
- concentrationAfter concentrating
- customthe obtained residue is recrystallized from ethanol
出典と根拠
- ORDレコード
- ord-a4f5c585a2f143a1af864ac4739e3c74
- 出典データセット
- uspto-grants-1998_03
- 特許番号
- US05723648
関連ノート
読み込み中…