Structure-Activity Relationship of 6-Methylidene Penems Bearing 6,5 Bicyclic Heterocycles as Broad-Spectrum β-Lactamase Inhibitors: Evidence for 1,4-Thiazepine Intermediates with C7 R Stereochemistry by Computational Methods
摘要:
The design and synthesis of a series of 6-methylidene penems containing [6,5]-fused bicycles (thiophene, imidazole, or pyrazle-fused system) as novel class A, B, and C beta-lactamase inhibitors is described. These penems proved to be potent inhibitors of the TEM-1 (class A) and AmpC (class C) beta-lactamases and less so against the class B metallo-beta-lactamase CcrA. Their in vitro and in vivo activities in combination with piperacillin are discussed. On the basis of the crystallographic structures of a serine-bound reaction intermediate of 2 with SHV-1 (class A) and GC1 (class C) enzymes, compounds 14a-1 were designed and synthesized. Penems are proposed to form a seven-membered 1,4 thiazepine ring in both class A and C beta-lactamases. The interaction energy calculation for the enzyme-bound intermediates favor the formation of the C7 R enantiomer over the S enantiomer of the 1,4-thiazepine in both beta-lactamases, which is consistent with those obtained from the crystal structure of 2 with SHV-1 and GC1.
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。
Bicyclic 6-alkylidene-penems as class-D beta-lactamases inhibitors
申请人:Mansour Suhayl Tarek
公开号:US20060276445A1
公开(公告)日:2006-12-07
This invention relates to certain bicyclic 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 general formula I or a pharmaceutically acceptable salt or in vivo hydrolyzable ester R
5
thereof:
wherein: One of A and B denotes hydrogen and the other an optionally substituted fused bicyclic heteroaryl group; and X═O or S.
Bicyclic 5-alkylidene-penems as beta lactamases inhibitors
申请人:Wyeth
公开号:US20040077622A1
公开(公告)日:2004-04-22
The present invention provides a compound of formula 1, pharmaceutical compositions and the use thereof for the treatment of bacterial infection or disease in a patient in need thereof.
1
本发明提供了一种化合物1,其制备药物组合物并用于治疗需要治疗细菌感染或疾病的患者。
Bicyclic 6-alkylidene-penems as beta-lactamase inhibitors
申请人:Venkatesan Mudumbai Aranapakam
公开号:US20060217361A1
公开(公告)日:2006-09-28
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、制药组合物以及其在治疗需要治疗细菌感染或疾病的患者中的应用。
Bicyclic 6-alkylidene-penems as β-lactamase inhibitors
申请人:Wyeth
公开号:US07112582B2
公开(公告)日:2006-09-26
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.
wherein one of A and B denotes hydrogen and the other an optionally substituted fused bicyclic heteroaryl group; and X is S.