反応式
[CH3:1][O:2][C:3]1[CH:33]=[CH:32][C:6]([CH2:7][O:8][C:9]([C:11]2[N:16]3[C:17](=[O:29])[C@@H:18]([NH:19]C(=O)CC4C=CC=CC=4)[C@H:15]3[S:14][CH2:13][C:12]=2[CH2:30][Cl:31])=[O:10])=[CH:5][CH:4]=1.CN1CCOCC1.[C:41]([O:45][C:46]([NH:48][C:49]1[S:50][CH:51]=[C:52]([C:54](=[N:58][O:59][C:60]([C:63]([O:65][CH:66]([C:73]2[CH:78]=[CH:77][CH:76]=[CH:75][CH:74]=2)[C:67]2[CH:72]=[CH:71][CH:70]=[CH:69][CH:68]=2)=[O:64])([CH3:62])[CH3:61])[C:55](O)=[O:56])[N:53]=1)=[O:47])([CH3:44])([CH3:43])[CH3:42].C1C=CC(OP(Cl)(Cl)=O)=CC=1>ClCCl.C(OCC)(=O)C>[CH3:1][O:2][C:3]1[CH:4]=[CH:5][C:6]([CH2:7][O:8][C:9]([C:11]2[N:16]3[C:17](=[O:29])[C@@H:18]([NH:19][C:55](=[O:56])[C:54]([C:52]4[N:53]=[C:49]([NH:48][C:46]([O:45][C:41]([CH3:42])([CH3:43])[CH3:44])=[O:47])[S:50][CH:51]=4)=[N:58][O:59][C:60]([C:63]([O:65][CH:66]([C:73]4[CH:78]=[CH:77][CH:76]=[CH:75][CH:74]=4)[C:67]4[CH:68]=[CH:69][CH:70]=[CH:71][CH:72]=4)=[O:64])([CH3:61])[CH3:62])[C@H:15]3[S:14][CH2:13][C:12]=2[CH2:30][Cl:31])=[O:10])=[CH:32][CH:33]=1参加物
反応物 4
生成物 1
試薬・触媒・溶媒 2
実験手順
To a suspension of 7β-amino-3-chloromethyl-3-cephem-4-carboxylic acid p-methoxybenzyl ester (1) p-toluenesulfonate (2.705 g: 5 mMol.) in dichloromethane (50 ml) are added N-methylmorpholin (0.55 ml; 1 Eq.) and 2-(2-t-butoxycarbonylamino-4-thiazolyl)-2-(1-diphenylmethoxycarbonyl-1-methylethoxyimino)acetic acid (3.51 g; 1.3 Eq.) at 0° C. and then phenylphosphoric dichloride (0.97 ml; 1.3 Eq.) and N-methylmorpholin (1.65 ml; 3 Eq.) at -40° C., and the mixture is stirred at -40° to -10° C. for 1.5 hours. The reaction mixture is diluted with ethyl acetate, washed with water, diluted hydrochloric acid and water, dried, and concentrated under reduced pressure. The residue is purified by silica gel chromatography (toluene:ethyl acetate) to give 7β-[2-(2-t-butoxycarbonylamino-4-thiazolyl)-2-(1-diphenylmethoxycarbonyl-1-methylethoxyimino)acetamido]-3-chloromethyl-3-cephem-4-carboxylic acid p-methoxybenzyl ester (2) (3.70 g).
後処理
- washwashed with water, diluted hydrochloric acid and water
- customdried
- concentrationconcentrated under reduced pressure
- customThe residue is purified by silica gel chromatography (toluene:ethyl acetate)
出典と根拠
- ORDレコード
- ord-a3d248e291de4d8d9313a6d8c07afc6e
- 出典データセット
- uspto-grants-1992_07
- 特許番号
- US05134138
関連ノート
読み込み中…