4-[[(Aminooxy)-methyl]sulphonyl]pyrocatechol hydrochloride → (6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-[(3,4-dihydroxyphenyl)sulfonylmethoxyimino]acetyl]amino]-3-[[2-(hydroxycarbamoyl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid

HRID 1755866Notes

Reaction equation

HRID 1755866 reaction equation
[NH2:1][C:2]1[S:3][CH:4]=[C:5]([C:7](=O)[C:8]([NH:10][C@@H:11]2[C:18](=[O:19])[N:17]3[C@@H:12]2[S:13][CH2:14][C:15]([CH2:23][S:24][C:25]2[N:30]4[N:31]=[C:32]([C:34](=[O:37])[NH:35][OH:36])[N:33]=[C:29]4[N:28]=[C:27]([CH3:38])[CH:26]=2)=[C:16]3[C:20]([OH:22])=[O:21])=[O:9])[N:6]=1.Cl.[NH2:41][O:42][CH2:43][S:44]([C:47]1[CH:48]=[C:49]([OH:54])[C:50](=[CH:52][CH:53]=1)[OH:51])(=[O:46])=[O:45]>CC(N(C)C)=O>[NH2:1][C:2]1[S:3][CH:4]=[C:5](/[C:7](=[N:41]/[O:42][CH2:43][S:44]([C:47]2[CH:53]=[CH:52][C:50]([OH:51])=[C:49]([OH:54])[CH:48]=2)(=[O:45])=[O:46])/[C:8]([NH:10][C@@H:11]2[C:18](=[O:19])[N:17]3[C@@H:12]2[S:13][CH2:14][C:15]([CH2:23][S:24][C:25]2[N:30]4[N:31]=[C:32]([C:34](=[O:37])[NH:35][OH:36])[N:33]=[C:29]4[N:28]=[C:27]([CH3:38])[CH:26]=2)=[C:16]3[C:20]([OH:22])=[O:21])=[O:9])[N:6]=1

Participants

4

Reactant 2

HCID 199179174-[[(Aminooxy)-methyl]sulphonyl]pyrocatechol hydrochloride2×HCID 86748850HCID 86748850, compound

Product 1

HCID 88419703(6R,7R)-7-[[(2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-[(3,4-dihydroxyphenyl)sulfonylmethoxyimino]acetyl]amino]-3-[[2-(hydroxycarbamoyl)-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-yl]sulfanylmethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acidYield 93.4%

Reagents, catalysts & solvents 1

HCID 31374DimethylacetamideSolvent

Procedure

(6R,7R)-7-(2-Amino-4-thiazoleglyoxylamido)-3-[[[2-(hydroxycarbamoyl)-5-methyl-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 (80 mg) (0.135 mmol) and 45 mg (0.176 mmol) of 4-[[(aminooxy)-methyl]sulphonyl]pyrocatechol hydrochloride are dissolved in 4 ml of absolute dimethyl-acetamide. After stirring at room temperature for 24 hours a further 14 mg (0.06 mmol) of 4-[[(aminooxy)-methyl]sulphonyl]-pyrocatechol hydrochloride are added. After a further 24 hours the solvent is removed in a high vacuum at room temperature and the residue is treated with 4 ml of water. The precipitated product is filtered off under suction and washed in succession with water and diethyl ether. There are obtained 100 mg of (6R,7R)-7-[(Z)-2-(2-amino-4-thiazolyl)-2-[[[(3,4-dihydroxyphenyl)sulphonyl]methoxy]imino]acetamido]-3-[[[2-(hydroxy-carbamoyl)-5-methyl-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 brown powder.

Workup

  1. additionare added
  2. customAfter a further 24 hours the solvent is removed in a high vacuum at room temperature
  3. additionthe residue is treated with 4 ml of water
  4. filtrationThe precipitated product is filtered off under suction
  5. washwashed in succession with water and diethyl ether

Sources & evidence

ORD record
ord-36493fecf8b2465d99f3106ed735663f
Source dataset
uspto-grants-1995_08
Patent number
US05438052

Reaction notes

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