Dichloromethane → 1-(3-methylpentanoyloxy)ethyl 7beta-amino-3-[[[1-(2-dimethylaminoethyl)-1H-tetrazol-5-yl]thio]methyl]ceph-3-em-4-carboxylate.dihydrochloride

HRID 615133노트

반응식

HRID 615133 반응식
[ClH:1].Cl.[NH2:3][C@@H:4]1[C:26](=[O:27])[N:6]2[C:7]([C:23]([OH:25])=[O:24])=[C:8]([CH2:11][S:12][C:13]3[N:17]([CH2:18][CH2:19][N:20]([CH3:22])[CH3:21])[N:16]=[N:15][N:14]=3)[CH2:9][S:10][C@H:5]12.C([O-])(=O)C.[K+].[CH3:33][CH:34]([CH2:42][CH3:43])[CH2:35][C:36]([O:38][CH:39](I)[CH3:40])=[O:37].[Cl:44]CCl>CN(C)C=O>[ClH:44].[ClH:1].[NH2:3][C@@H:4]1[C:26](=[O:27])[N:6]2[C:7]([C:23]([O:25][CH:39]([O:38][C:36](=[O:37])[CH2:35][CH:34]([CH3:33])[CH2:42][CH3:43])[CH3:40])=[O:24])=[C:8]([CH2:11][S:12][C:13]3[N:17]([CH2:18][CH2:19][N:20]([CH3:22])[CH3:21])[N:16]=[N:15][N:14]=3)[CH2:9][S:10][C@H:5]12

참가 물질

6

반응물 4

HCID 6344DichloromethaneHCID 517044Potassium AcetateHCID 198757861-Iodoethyl 3-methylpentanoateHCID 703953067beta-amino-3-[[[1-(2-dimethylaminoethyl)-1H-tetrazol-5-yl]thio]methyl]ceph-3-em-4-carboxylic acid dihydrochloride

생성물 1

HCID 704637231-(3-methylpentanoyloxy)ethyl 7beta-amino-3-[[[1-(2-dimethylaminoethyl)-1H-tetrazol-5-yl]thio]methyl]ceph-3-em-4-carboxylate.dihydrochloride

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

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온도
0 °C

실험 절차

To a solution of 4.22 g of 7β-amino-3-[[[1-(2-dimethylaminoethyl)-1H-tetrazol-5-yl]thio]methyl]ceph-3-em-4-carboxylic acid.dihydrochloride in 60 ml of dimethylformamide, 1.67 g of potassium acetate was added and the mixture was cooled to 0° C. with stirring. To the mixture, 5.0 g of 1-iodoethyl 3-methylvalerate was added dropwise, and the mixture was stirred at 0° C. for 5 minutes. The reaction mixture was then poured into a mixture of 60 ml of dichloromethane and 60 ml of 0.1 NHCl, and the aqueous layer was separated. The aqueous layer was adjusted to pH 6.0 with a saturated aqueous solution of sodium hydrogencarbonate and extracted with dichloromethane. The organic layer was admixed with water and adjusted to pH 2.0 with 4N HCl. The aqueous layer was separated and dichloromethane was removed from the aqueous layer under reduced pressure. The aqueous layer was lyophilized to give 2.83 g of the titled compound.

후처리

  1. stirringthe mixture was stirred at 0° C. for 5 minutes
  2. customthe aqueous layer was separated
  3. extractionextracted with dichloromethane
  4. customThe aqueous layer was separated
  5. customdichloromethane was removed from the aqueous layer under reduced pressure

출처 및 근거

ORD 기록
ord-e0de223fd48447a0bf0f6178f3de6cfa
출처 데이터셋
uspto-grants-1985_02
특허 번호
US04497809

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