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Sodium Chloride → 7beta-(t-Butoxycarbonyl)amino-3-[2-(N-tosylcarbamoyl)-benzoyloxy]methyl-3-cephem-4-carboxylic acid

HRID 28022
ノート
印刷プレビュー

反応式

HRID 28022 の反応式
[C:1]([O:5][C:6]([NH:8][C@@H:9]1[C:21](=[O:22])[N:11]2[C:12]([C:18]([O-:20])=[O:19])=[C:13]([CH2:16][OH:17])[CH2:14][S:15][C@H:10]12)=[O:7])([CH3:4])([CH3:3])[CH3:2].[Na+].C(N(CC)CC)C.[S:31]([N:41]1[C:45](=[O:46])[C:44]2=[CH:47][CH:48]=[CH:49][CH:50]=[C:43]2[C:42]1=[O:51])([C:34]1[CH:40]=[CH:39][C:37]([CH3:38])=[CH:36][CH:35]=1)(=[O:33])=[O:32].[Cl-].[Na+]>CN(C)C=O.O.C(OCC)(=O)C.C(O)(=O)C.CCCCCC.C1(C)C=CC=CC=1>[C:1]([O:5][C:6]([NH:8][C@@H:9]1[C:21](=[O:22])[N:11]2[C:12]([C:18]([OH:20])=[O:19])=[C:13]([CH2:16][O:17][C:45](=[O:46])[C:44]3[CH:47]=[CH:48][CH:49]=[CH:50][C:43]=3[C:42](=[O:51])[NH:41][S:31]([C:34]3[CH:40]=[CH:39][C:37]([CH3:38])=[CH:36][CH:35]=3)(=[O:33])=[O:32])[CH2:14][S:15][C@H:10]12)=[O:7])([CH3:4])([CH3:2])[CH3:3]
参加物実験手順後処理出典と根拠反応ノート

参加物

11

反応物 4

HCID 5234Sodium ChlorideHCID 8471TriethylamineHCID 2141332-((4-Methylphenyl)sulfonyl)-1H-isoindole-1,3(2H)-dioneHCID 70582610Sodium 7beta-(t-butoxycarbonyl)amino-3-hydroxymethyl-3-cephem-4-carboxylate

生成物 1

HCID 705836227beta-(t-Butoxycarbonyl)amino-3-[2-(N-tosylcarbamoyl)-benzoyloxy]methyl-3-cephem-4-carboxylic acid収率 42.2%

試薬・触媒・溶媒 6

HCID 176Acetic Acid溶媒HCID 962Water溶媒2 回HCID 1140Toluene溶媒HCID 6228Dimethylformamide溶媒HCID 8058Hexane溶媒HCID 8857Ethyl Acetate溶媒

実験手順

In N,N-dimethylformamide (8 ml), is dissolved sodium 7β-(t-butoxycarbonyl)amino-3-hydroxymethyl-3-cephem-4-carboxylate (1.60 g), followed by addition of triethylamine (3 ml) and N-tosylphthalimide(1.80 g) under ice-cooling. The mixture is stirred for one hour and then poured into toluene (300 ml). n-Hexane (200 ml) is added and the resultant precipitate is collected by filtration, washed with toluene and dried. The powder thus obtained is dissolved in water (50 ml). The solution is adjusted to pH 3.7 with acetic acid and a saturated aqueous solution of sodium chloride (50 ml) is added. The resultant precipitate is collected by filtration and washed with water. The cake thus obtained is added to a mixed solution of ethyl acetate (30 ml) and water (10 ml). After separation, the ethyl acetate layer is washed with water and water (10 ml) is added. Sodium hydrogen carbonate is added to adjust to pH 6.8. After separation, the aqueous layer is washed with ethyl acetate and ethyl acetate (20 ml) is added. To the mixture, diluted phosphoric acid is added to adjust to pH 4.0. After separation, the ethyl acetate layer is washed with water, dried over anhydrous sodium sulfate and concentrated. To the residue, ether is added under stirring and the resultant insolubles are filtered off. The filtrate is concentrated under reduced pressure and carbon tetrachloride is added. The resultant precipitate is collected by filtration and dried phosphorus pentoxide. The procedure provides 7β-(t-butoxycarbonyl)amino-3-[2-(N-tosylcarbamoyl)benzoyloxy]methyl-3-cephem-4-carboxylic acid (1.21 g).

後処理

  1. temperaturecooling
  2. filtrationthe resultant precipitate is collected by filtration
  3. washwashed with toluene
  4. customdried
  5. customThe powder thus obtained
  6. filtrationThe resultant precipitate is collected by filtration
  7. washwashed with water
  8. customThe cake thus obtained
  9. customAfter separation
  10. washthe ethyl acetate layer is washed with water and water (10 ml)
  11. additionis added
  12. additionSodium hydrogen carbonate is added
  13. customAfter separation
  14. washthe aqueous layer is washed with ethyl acetate and ethyl acetate (20 ml)
  15. additionis added
  16. additionTo the mixture, diluted phosphoric acid is added
  17. customAfter separation
  18. washthe ethyl acetate layer is washed with water
  19. dry with materialdried over anhydrous sodium sulfate
  20. concentrationconcentrated
  21. additionTo the residue, ether is added
  22. stirringunder stirring
  23. filtrationthe resultant insolubles are filtered off
  24. concentrationThe filtrate is concentrated under reduced pressure and carbon tetrachloride
  25. additionis added
  26. filtrationThe resultant precipitate is collected by filtration and dried phosphorus pentoxide

出典と根拠

ORDレコード
ord-847a874b96814a0bbefa1389a6bcb77f
出典データセット
uspto-grants-1980_09
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04224441

反応ノート

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