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Organic amine salt of cephalosporin compound and its preparation method

A technology of organic amine salts and cephalosporins, which is applied in the field of derivatives of cephalosporins and their preparation, and can solve problems such as incompatibility, adverse reactions, and hypernatremia

Inactive Publication Date: 2007-08-01
陈文展
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, with the widespread use of cephalosporins, it is found that most cephalosporins will produce drug resistance and have toxic side effects
There are many problems in the use process, such as: 1) there is vascular irritation, and long-term use can easily cause symptoms such as vasculitis; 2) most of them exist in the form of sodium salts, and sodium ions enter the human body in such a large amount Patients with diabetic bacterial infection, neurosurgery patients with severe neurosurgery, patients with heart and kidney insufficiency, or patients with high blood pressure are at high risk, which can easily cause hypernatremia and cause adverse reactions; 3) Some varieties have incompatibility and are inconvenient to use; 4) Muscle There is muscle irritation when injecting; etc.

Method used

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  • Organic amine salt of cephalosporin compound and its preparation method
  • Organic amine salt of cephalosporin compound and its preparation method
  • Organic amine salt of cephalosporin compound and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Example 1: Preparation of Cefuroxime Arginine

[0054] Add 17.4g (0.1mol) of arginine and 20ml of 60% ethanol into a 250ml three-necked flask, add 42.4g (0.1mol) of cefuroxime acid in 20ml 80% ethanol solution under high temperature stirring, and stir until the mixture is clear. After stirring for 2 hours at room temperature, the mixed reactants were dropped into 300ml (5-10℃) acetone solution to obtain white powdery crystals. The solid powder was filtered with suction, and the solid was washed with a small amount of acetone. Under vacuum drying conditions for 24 hours, 53.0 g of powdered solids were obtained, with a yield of 88.7%. Content analysis: (HPLC method) containing 70.2-71.4% of cefuroxime acid. NMR, MS, UV, IR and HPLC analysis showed that the product was cefuroxime arginine salt with a purity of 99.3%.

Embodiment 2

[0055] Example 2: Preparation of ceftriaxone arginine

[0056] In a 250ml three-necked flask, add 17.4g (0.1mol) of arginine, 4ml of methanol, and 2ml of water. Stir at high temperature. Add 57.7g (0.1mol) of ceftriaxone. Drop into 500ml of acetone at high temperature to precipitate a large amount of white crystalline powder, filter the solid with a small amount of acetone, and dry at high temperature under phosphorus pentoxide for 24 hours to obtain 67.2g of white crystalline ceftriaxone arginine salt. Yield: 89.8%, content analysis (HPLC method): 76.1-77.3% containing ceftriaxone acid. NMR, MS, UV, IR and HPLC analysis showed that the product was ceftriaxone arginine salt with a purity of 99.4%.

Embodiment 3

[0057] Example 3: Preparation of Cefotizole Arginine

[0058] In a 250ml three-necked flask, add 17.4g (0.1mol) of arginine, 4ml of methanol, and 2ml of water. Stir at high temperature. Add 44g (0.1mol) of cefotiazole. Stir to dissolve and stir for another 1 hour. Put the mixture at high temperature. Drop it into 500ml of acetone to precipitate a large amount of white crystalline powder, filter the solid with a small amount of acetone, and dry it at high temperature under phosphorus pentoxide for 24 hours to obtain 54.5g of white crystalline cefotizole arginine salt. Yield: 88.8%, content analysis (HPLC method): containing 71.2-72.2% of cefotizolic acid. NMR, MS, UV, IR and HPLC analysis showed that the product was cefotizole arginine salt with a purity of 99.0%.

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PUM

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Abstract

The invention relates to the organic amine salt or hydrate for ceph compound used for treating bacteria infection, and the chemical formula is demonstrated in (I).Said organic amine can be lycine, arginine, tert-butylamine, diethanolamine, triethanolamine, diethylamine or meglumine. It comprises cefuroxime organic amine salt, ceftriaxone organic amine salt, ceftezole organic amine salt, cefoperazone organic amine salt, cephalothin organic amine salt, cefotaxime organic amine salt, cefradine organic amine salt, cefonicid organic amine salt, cefmetazole organic amine salt, cefodizime organic amine salt, cefmenoxime organic amine salt, ceftizoxime organic amine salt, cefpiramide organic amine salt, cefazolin organic amine salt, cefoxitinorganic amine salt and flomoxef organic amine salr. The invention provides the medical compound taking compound in formula (I) as active element and its application to preparation of medicine for treating bacteria infection.

Description

Technical field: [0001] The invention belongs to the field of compound medicine and relates to derivatives of cephalosporin compounds and a preparation method thereof. Background technique: [0002] Since cephalosporin C was chemically separated and lysed into the important intermediate body 7ACA in 1961, semi-synthetic cephalosporin drugs have developed rapidly. The first generation of cephalosporins such as cephalethin, cephalexin, and cefradine in the early stage. Cefuroxime, cefamandole and cefoxitin are second-generation cephalosporins. In 1977, the West German Hoechst Company and the French Rousll Company jointly developed a cefotaxime (cefotaxime, HR756) with excellent antibacterial activity. Since then, the development of cephalosporins has entered the third generation, and the research on cephalosporins has achieved significant results. [0003] However, with the widespread use of cephalosporins, it has been found that most cephalosporins have drug resistance and have to...

Claims

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Application Information

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IPC IPC(8): C07D501/34C07D501/36C07D501/22A61K31/546A61K31/545A61P31/04
Inventor 陈文展
Owner 陈文展
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