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.CN1[CH2:40][CH2:39]OCC1.[C:41]([O:45][C:46]([NH:48][C:49]1[S:50][CH:51]=[C:52]([C:54](=[N:58][O:59][CH2:60][C:61](OC(C)(C)C)=O)[C:55]([OH:57])=O)[N:53]=1)=[O:47])([CH3:44])([CH3:43])[CH3:42].[CH:68]1[CH:73]=[CH:72][C:71](OP(Cl)(Cl)=O)=[CH:70][CH:69]=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:57])[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:61]4[CH:40]=[CH:39][CH:12]=[CH:11][CH:9]=4)([C:3]4[CH:33]=[CH:32][CH:6]=[CH:5][CH:4]=4)[C:68]4[CH:73]=[CH:72][CH:71]=[CH:70][CH:69]=4)[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
反応条件
- 温度
- -40 °C
実験手順
To a suspension of 7β-amino-3-chloromethyl-3-cephem-4-carboxylic acid p-methoxybenzyl ester (1) toluene-p-sulfonic acid salt (3.94 g; (7.28 mMol.) in dichloromethane (50 ml) keeping at 0° C. are added N-methylmorpholin (0.80 ml; 1 Eq.) and 2-(2-t-butoxycarbonylamino-4-thiazolyl)-2-t-butoxycarbonylmethoxyiminoacetic acid (3.80 g; 1.3 Eq.) and cooled at -40° C. To this mixture are added phenylphosphoric acid dichloride (1.41 ml; 1.3 Eq.) and N-methylmorpholin (2.41 ml; 3 Eq.), and the mixture is stirred at -40° to -15° 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 toluene: ethyl acetate) to give 7β-[2-(2-t-butoxycarbonylamino-4-thiazolyl)-2-t-butoxycarbonylmethoxyiminoacetamido]-3-chloromethyl-3-cephem-4-carboxylic acid p-methoxybenzyl ester (2) (5.20 g).
後処理
- customkeeping at 0° C.
- washwashed with water, diluted hydrochloric acid and water
- customdried
- concentrationconcentrated under reduced pressure
- customThe residue is purified by silica gel chromatography (toluene toluene: ethyl acetate)
出典と根拠
- ORDレコード
- ord-871313f628f1425fba0d1c59af88520e
- 出典データセット
- uspto-grants-1992_07
- 特許番号
- US05134138
関連ノート
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