CP6679, a new injectable cephalosporin. Part1: Synthesis and structure–activity relationships
摘要:
A series of cephalosporins bearing a 5,5-fused ring system, an (imidazo/[5,1 -b]thiazolium-6-yl)methyl group, at the C-3 position were synthesized and evaluated for in vitro antibacterial activities. CP6679 (Is) and its analogues showed potent antibacterial activities against Gram-positive and Gram-negative bacteria, including Pseudomonas aeruginosa. They were also highly active against methicillin-resistant Staphylococcus aureus (MRSA). CP6679 (Is) showed more potent antibacterial activity than ceftazidime (CAZ) or cefpirome (CPR) against Pseudomonas aeruginosa and MRSA. (C) 2000 Elsevier Science Ltd. All rights reserved.
Antibacterial substituted 7-acylamino-3-(methylhydrazono) methyl-cephalosporins and intermediates
申请人:——
公开号:US20040132709A1
公开(公告)日:2004-07-08
A compound of formula
1
wherein W, V, R
1
, R
5
, R
2
, R
3
and R
4
have various meanings, a process for their production and their use as a pharmaceutical.
An industrially excellent, novel process for producing cephem compounds which are useful as medicines, particularly, antibiotics and represented by the following general formula (III):
which comprises reacting in water a 3-cephem-4-carboxylate represented by the following general formula (I):
or a salt thereof with an acid chloride represented by the general formula (II), R1COCl.
[EN] ANTIBACTERIAL SUBSTITUTED 7-ACYLAMINO -3-(METHYLHYDRAZONO) METHYL-CEPHALOSPORINS AND INTERMEDIATES<br/>[FR] CEPHALOSPORINES ANTIBACTERIENNES DE 7-ACYLAMINO -3-METHYLHYDRAZONOMETHYLE SUBSTITUE ET INTERMEDIAIRES
申请人:BIOCHEMIE GESELLSCHAFT MBH
公开号:WO1998043981A1
公开(公告)日:1998-10-08
(EN) A compound of formula (I), wherein W, V, R1, R5, R2, R3 and R4 have various meanings, a process for their production and their use as a pharmaceutical.(FR) Composé représenté par la formule (I) dans laquelle W, V, R1, R5, R2, R3 et R4 possèdent différentes significations, procédé servant à le préparer et son utilisation en tant que produit pharmaceutique.
A crystalline hydrochloride of the compound 7-[5-amino-1,2,4-thiadiazol-3-yl-(fluoromethoxy-imino)acetyl]amino}-3-[(imino-1-piperazinylmethyly)methylhydrazano]-methyl-3-cephem-4carboxylic acid and the pharmaceutical use thereof.