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Dichloromethane → (6R,7R)-7-amino-3-[[[5-(hydroxycarbamoyl)-2-(hydroxymethyl)-s-triazolo[1,5-a]pyrimidin-7-yl]thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

HRID 1755915
ノート
印刷プレビュー

反応式

HRID 1755915 の反応式
[OH:1][NH:2][C:3]([C:5]1[CH:10]=[C:9]([SH:11])[N:8]2[N:12]=[C:13]([CH2:15][OH:16])[N:14]=[C:7]2[N:6]=1)=[O:4].CC(O[CH2:21][C:22]1[CH2:31][S:30][C@@H:25]2[C@H:26]([NH2:29])[C:27](=[O:28])[N:24]2[C:23]=1[C:32]([OH:34])=[O:33])=O.B(F)(F)F.CCOCC.ClCCl>S1(CCCC1)(=O)=O.ClCCl>[NH2:29][C@@H:26]1[C:27](=[O:28])[N:24]2[C@@H:25]1[S:30][CH2:31][C:22]([CH2:21][S:11][C:9]1[N:8]3[N:12]=[C:13]([CH2:15][OH:16])[N:14]=[C:7]3[N:6]=[C:5]([C:3](=[O:4])[NH:2][OH:1])[CH:10]=1)=[C:23]2[C:32]([OH:34])=[O:33]
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 6344DichloromethaneHCID 8000Boron trifluoride etherateHCID 4413287-Aminocephalosporanic acidHCID 178523962HCID 178523962、化合物

生成物 1

HCID 22855054(6R,7R)-7-amino-3-[[[5-(hydroxycarbamoyl)-2-(hydroxymethyl)-s-triazolo[1,5-a]pyrimidin-7-yl]thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid収率 40.4%

試薬・触媒・溶媒

1
HCID 69712587Dichloromethane sulpholane溶媒

反応条件

温度
0 °C

実験手順

N-Hydroxy-2-(hydroxymethyl)-7-mercapto-s-triazolo[1,5-a]pyrimidine-5-carboxamide (190 mg) (0.79 mmol) and 193 mg (0.71 mmol) of 7-amino-cephalosporanic acid are suspended in 20 ml of sulpholane/dichloromethane (1:1 v/v). 4.2 ml of boron trifluoride diethyl etherate are added thereto at 0° C. The mixture is stirred at 0° C. for 2 hours and at room temperature for 20 hours. 80 ml of dichloromethane are added. The precipitated material is separated and dissolved in water. The mixture is adjusted to pH 4 by the addition of saturated aqueous sodium hydrogen carbonate solution. The precipitated product is filtered off under suction and washed in sequence with water, ethanol and diethyl ether. There are obtained 130 mg of (6R,7R)-7-amino-3-[[[5-(hydroxycarbamoyl)-2-(hydroxymethyl)-s-triazolo[1,5-a]pyrimidin-7-yl]thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid as a beige powder.

後処理

  1. customat 0° C
  2. customThe precipitated material is separated
  3. dissolutiondissolved in water
  4. additionThe mixture is adjusted to pH 4 by the addition of saturated aqueous sodium hydrogen carbonate solution
  5. filtrationThe precipitated product is filtered off under suction
  6. washwashed in sequence with water, ethanol and diethyl ether

出典と根拠

ORDレコード
ord-c7950d0bef4d466883eb5224485c2d2e
出典データセット
uspto-grants-1995_08
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US05438052

反応ノート

読み込み中…

このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート