반응식
[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]=1참가 물질
반응물 4
생성물 1
시약·촉매·용매 2
반응 조건
- 온도
- -40 °C
실험 절차
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).
후처리
- 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)
출처 및 근거
- ORD 기록
- ord-871313f628f1425fba0d1c59af88520e
- 출처 데이터셋
- uspto-grants-1992_07
- 특허 번호
- US05134138
연결된 노트
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