反応式
[CH2:1]([O:8][N:9]1[C:15](=[O:16])[N:14]2[CH2:17][C@H:10]1[CH2:11][CH2:12][C@H:13]2[C:18]([OH:20])=O)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(N(CC)CC)C.ClC(OCC(C)C)=O.[C:36]([NH:40][NH2:41])(=[O:39])[CH2:37][CH3:38]>O1CCCC1>[CH2:1]([O:8][N:9]1[C:15](=[O:16])[N:14]2[CH2:17][C@H:10]1[CH2:11][CH2:12][C@H:13]2[C:18]([NH:41][NH:40][C:36](=[O:39])[CH2:37][CH3:38])=[O:20])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1参加物
6
反応条件
- 温度
- 0 °C
実験手順
To a solution of the carboxylic acid of Example 9 or 16 (6b, 354 mg, 1.28 mmol) in tetrahydrofuran (10 mL) were added triethylamine (0.216 mL) and isobutyl chloroformate (208 μl) under ice-cooling, followed by agitating at 0° C. for 15 minutes. To the reaction solution were added a solution of propionohydrazide (161 mg, prepared following a procedure analogous to Reference Example 3 and Reference Example 6) in tetrahydrofuran (3 mL) at 0° C., followed by stirring at room temperature for 1 hour, and then concentrating under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate=1/1-0/1) to afford 425 mg of the title compound (yield 96%).
後処理
- temperaturecooling
- customprepared
- customat 0° C.
- stirringby stirring at room temperature for 1 hour
- concentrationconcentrating under reduced pressure
- customThe resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate=1/1-0/1)
出典と根拠
- ORDレコード
- ord-ecee82746adb47249cb2028d0e59055d
- 出典データセット
- uspto-grants-2015_11
- 特許番号
- US09181250B2
関連ノート
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