5,5,6-Fused tricycles bearing imidazole and pyrazole 6-methylidene penems as broad-spectrum inhibitors of β-lactamases
摘要:
beta-Lactamases are serine- and metal-dependent hydrolases, produced by the bacteria as defense against beta-lactam antibiotics. Commercially available inhibitors such as clavulanic acid, sulbactam, and tazobactam, which are currently used in the hospital settings, have reduced activity against newly emerging beta-lactamases. Bacterial production of diverse beta-lactamases including class-A, class-C, and ESBLs has motivated several research groups to search for inhibitors with a broader spectrum of activity. Previously, several novel 6-methylidene penems bearing, [5, 5] [5, 6] and [5, 5, 5] heterocycles have been synthesized in our laboratory and were shown to be potent and broad-spectrum beta-lactamase inhibitors. As a continuation of our previous work and in order to extend the structure-activity relationships, in this paper, we describe herein the synthesis and in vitro, in vivo activities of several novel 5,5,6-fused tricyclic heterocycles attached to the 6-methylidene penem core. The compounds presented in the current paper are potent and broad-spectrum inhibitors of the TEM-1 and AmpC beta-lactamases. In combination with piperacillin, their in vitro activities showed enhanced susceptibility to class A- and C-resistant strains studied in various bacteria. Some of the newly synthesized compounds such as 12a-c were shown to have in vivo activity in the acute lethal infection model against TEM-1 producing organisms. The 5,5,6-fused heterocyclic ring cores such as 21, 25, and 35 reported here are hitherto unknown in the literature. (c) 2007 Elsevier Ltd. All rights reserved.
[EN] HETEROTRICYCLYL 6-ALKYLIDENE-PENEMS AS BetaEpsilonTauAlpha-LACTAMASE INHIBITORS [FR] DERIVES D'HETEROTRICYCLYL 6-ALKYLIDENE-PENEMES EN TANT QU'INHIBITEURS DE BETA-LACTAMASE
[EN] HETEROTRICYCLYL 6-ALKYLIDENE-PENEMS AS BetaEpsilonTauAlpha-LACTAMASE INHIBITORS<br/>[FR] DERIVES D'HETEROTRICYCLYL 6-ALKYLIDENE-PENEMES EN TANT QU'INHIBITEURS DE BETA-LACTAMASE
申请人:WYETH CORP
公开号:WO2003093280A1
公开(公告)日:2003-11-13
The present invention provides a compound of formula I, pharmaceutical compositions and the use thereof for the treatment of bacterial infection or disease in a patient in need thereof.
本发明提供了一种I式化合物,药物组合物以及其用于治疗患有细菌感染或疾病的患者的用途。
Tricyclic 6-alkylidene-penems as class-D beta-lactamases inhibitors
申请人:Mansour Suhayl Tarek
公开号:US20060276446A1
公开(公告)日:2006-12-07
This invention relates to certain tricyclic 6-alkylidene penems which act as a inhibitor of class-D enzymes. β-Lactamases hydrolyze β-lactam antibiotics, and as such serve as the primary cause of bacterial resistance. The compounds of the present invention when combined with β-lactam antibiotics will provide an effective treatment against life threatening bacterial infections.
In accordance with the present invention there are provided compounds of formula I which are useful for treatment of bacterial infections having class-D enzymes associated therewith:
wherein: One of A and B denotes hydrogen and the other an optionally substituted fused tricyclic heteroaryl group; and X is S or O.
Process for preparing 6-alkylidene penem derivatives
申请人:Wyeth
公开号:US20040132708A1
公开(公告)日:2004-07-08
The present invention provides a process of making compounds of formula I, which are useful for the treatment of bacterial infection or disease.
1
本发明提供了一种制备式I化合物的方法,该化合物对治疗细菌感染或疾病有用。
[EN] PROCESS FOR PREPARING 6-ALKYLIDENE PENEM DERIVATIVES<br/>[FR] PROCEDE DE PREPARATION DE DERIVES DE 6-ALKYLIDENE PENEM
申请人:WYETH CORP
公开号:WO2003093277A1
公开(公告)日:2003-11-13
The present invention provides a process of making compounds of Formula (I), which are useful for the treatment of bacterial infection or disease.
本发明提供了一种制备化合物的方法,该化合物符合式(I),对于治疗细菌感染或疾病非常有用。
Tricyclic 6-alkylidene-penems as beta-lactamase inhibitors
申请人:Wyeth
公开号:US20040043978A1
公开(公告)日:2004-03-04
The present invention provides a compound of formula I, pharmaceutical compositions and the use thereof for the treatment of bacterial infection or disease in a patient in need thereof.
1