Disclosed is a novel carbapenem derivative having a substituted imidazo[5,1-b]thiazole group at the 2-position on the carbapenem ring have high anti-microbial activities against &bgr;-lactamase producing bacteria, MRSA, resistant-Pseudomonas aeruginosa, PRSP, enterococci, and influenza, and high stabilities to DHP-1. According to the present invention, there is provided a compound represented by the formula (I), or a pharmacologically acceptable salt thereof or an ester at the 3-position on the carbapenem ring thereof:
We have studied an ester prodrug of a carbapenem to develop a potent orally active β-lactam antibiotic. A variety of 1β-methylcarbapenem derivatives have been synthesized. We have found that some derivatives having an amide group in the C-2 side chain show potent and well balanced antibacterial activities as well as high stability against dehydropeptidase-I. Oral absorption of derivatives has been optimized by modifying the C-3 ester promoiety. Pivaloyloxymethyl (1R, 5S, 6S)-6-[(R)-1-hydroxyethyl]-1-methyl-2-[(R)-5-oxopyrrolidin-3-ylthio]-1-carbapen-2-em-3-carboxylate, CS-834, has been selected as the most promising compound for further evaluation.
[Objective] An objective of the present invention is to provide compounds that are effective against various resistant bacteria which cause current clinical problems, for example, pneumococci including penicillin resistant
Streptococcus pneumoneae
(PRSP),
Haemophilus influenzae
including bata-lactamase-nonproducing ampicillin-resistant
Haemophilus influenzae
(BLNAR), and
Moraxella
(
Branhamella
)
catarrhalis.
[Structure] The present invention provides 2-ethenylthio-based carbapenem derivatives represented by the formula (I) or pharmaceutically acceptable salts thereof that are effective, for example, against pneumococci including penicillin resistant
Streptococcus
pneumoneae (PRSP),
Haemophilus influenzae
including beta-lactamase-nonproducing ampicillin-resistant
Haemophilus influenzae
(BLNAR), and
Moraxella
(Branhamella) catarrhalis:
[EN] BETA-LACTAMASE INHIBITORS<br/>[FR] INHIBITEURS DE BÊTA-LACTAMASES
申请人:VENATORX PHARMACEUTICALS INC
公开号:WO2017100537A1
公开(公告)日:2017-06-15
Described herein are compounds and compositions that modulate the activity of beta-lactamases. In some embodiments, the compounds described herein inhibit beta-lactamase. In certain embodiments, the compounds described herein are useful in the treatment of bacterial infections.
In order to improve the oral bioavailability (BA) of 2-butyl-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl]-1H-benzimid azole - 7-carboxylic acid (3: CV-11194) and 2-ethoxy-1-[[2'-(1H-tetrazol-5-yl)biphenyl-4- yl]methyl]-1H-benzimidazole-7-carboxylic acid (4: CV-11974), novel angiotensin II (AII) receptor antagonists, chemical modification to yield prodrugs has been examined. After selective tritylation