128472-56-0Relevant academic research and scientific papers
Stereochemically altered cephalosporins as potent inhibitors of New Delhi metallo-β-lactamases
Chen, Fangfang,Hu, Liqiang,Ji, Changge,Liu, Runqiu,Mao, Wuyu,Wang, Hao,Xie, Hexin,Xue, Shuyuan,Yang, Huixin,Yu, Tao,Zhang, Shuangzhan
, (2022/02/14)
Antibiotic resistance caused by β-lactamases, particularly metallo-β-lactamases, has been a major threat to public health globally. New Delhi metallo-β-lactamase-1 (NDM-1) represents one of the most important metallo-β-lactamases; the production of NDM-1 in bacterial pathogen significantly reduces the efficacy of β-lactam antibiotics, including life-saving carbapenems. Herein, we have demonstrated stereochemically altered cephalosporins as potent inhibitors against NDM-1, as well as mutants of NDM. The structure and activity relationship (SAR) study on over twenty cephalosporin analogues discloses the stereochemistry and the substituents on 7-position and 3′-position of cephalosporin are critical to suppress the activity of NDM-1 and the optimal compound 1u exhibited an IC50 of 0.13 μM. Furthermore, a crystal complex of NDM-1 and 1u has been obtained, suggesting this cephalosporin derivative inhibits enzyme activity by the formation of a relatively stable hydrolytic product-NDM-1 intermediate. The discovery in this study may pave the way to turn cephalosporin, a natural substrate of β-lactamase, into an effective NDM-1 inhibitor to combat antibiotic resistance.
Inhibition of Human Leukocyte Elastase. 2. Inhibition by Substituted Cephalosporin Esters and Amides
Finke, Paul E.,Ashe, Bonnie M.,Knight, Wilson B.,Maycock, Alan L.,Navia, Manuel A.,et al.
, p. 2522 - 2528 (2007/10/02)
A variety of 7α-methoxycephalosporin ester and amide sulfones were prepared and tested to determine the structure-activity relations for inhibition of human leukocyte elastase (HLE), a serine protease which has been implicated in several degenerative lung
