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Acetic Acid → 7-[2-(2-Aminothiazol-4-yl)-2-carboxymethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid

HRID 569452
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인쇄 미리보기

반응식

HRID 569452 반응식
[NH2:1][C:2]1[S:3][CH:4]=[C:5]([C:7](=[N:25][O:26][CH2:27][C:28]([O:30]CC)=[O:29])[C:8]([NH:10][CH:11]2[C:23](=[O:24])[N:13]3[C:14]([C:20]([OH:22])=[O:21])=[C:15]([CH:18]=[CH2:19])[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1.C(=O)(O)[O-].[Na+].C(O)(=O)C>O>[NH2:1][C:2]1[S:3][CH:4]=[C:5]([C:7](=[N:25][O:26][CH2:27][C:28]([OH:30])=[O:29])[C:8]([NH:10][CH:11]2[C:23](=[O:24])[N:13]3[C:14]([C:20]([OH:22])=[O:21])=[C:15]([CH:18]=[CH2:19])[CH2:16][S:17][C@H:12]23)=[O:9])[N:6]=1
참가 물질실험 절차후처리출처 및 근거반응 노트

참가 물질

5

반응물 3

HCID 176Acetic AcidHCID 516892Sodium BicarbonateHCID 1317140637-[2-(2-Aminothiazol-4-yl)-2-ethoxycarbonylmethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid

생성물 1

HCID 913233527-[2-(2-Aminothiazol-4-yl)-2-carboxymethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid수율 51.3%

시약·촉매·용매 1

HCID 962
Water
용매

실험 절차

A mixture of 7-[2-(2-aminothiazol-4-yl)-2-ethoxycarbonylmethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid (syn isomer) (1.45 g) and sodium bicarbonate (0.63 g) in water (15 ml) was stirred at ambient temperature for 7 days. The reaction mixture was adjusted to pH 6.0 with acetic acid. The solution was subjected to column chromatography on macroporous nonionic adsorption resin "Diaion HP-20" (30 ml) and eluted with water. The eluate was acidified to pH 2.2 with 10% hydrochloric acid under ice-cooling. The precipitates were collected by filtration and dried to give 7-[2-(2-aminothiazol-4-yl)-2-carboxymethoxyiminoacetamido]-3-vinyl-3-cephem-4-carboxylic acid (syn isomer) (0.7 g), which was identified by comparing the physico-chemical data with those of the object compound in Example 90.

후처리

  1. wash" (30 ml) and eluted with water
  2. temperaturecooling
  3. filtrationThe precipitates were collected by filtration
  4. customdried

출처 및 근거

ORD 기록
ord-22c8ae33fd8b426b94bd7c8278092e48
출처 데이터셋
uspto-grants-1988_03
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US04731443

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