[EN] BORON CONTAINING POLYBASIC BACTERIAL EFFLUX PUMP INHIBITORS AND THERAPEUTICS USES THEREOF [FR] INHIBITEURS DES POMPES À EFFLUX BACTÉRIENNES POLYBASIQUES CONTENANT DU BORE ET UTILISATIONS THÉRAPEUTIQUES DE CES DERNIERS
Two approaches to the use of benzo[c][1,2]oxaboroles as active fragments for synthetic transformation of clarithromycin
作者:Gennady B. Lapa、Elena P. Mirchink、Elena B Isakova、Maria N Preobrazhenskaya
DOI:10.1080/14756366.2016.1261129
日期:2017.1.1
Clarithromycin (active against Gram positive infections) and 1-hydroxy-1,3-dihydrobenzo[c][1,2] oxaborole derivatives (effective for Gram negative microbes) are the ligands of bacterial RNA. The antimicrobial activities of these benzoxaboroles linked with clarithromycin at 9 or 400 position were compared. Two synthetic pathways for these conjugates were elaborated. First pathway explored the substitution of the C-9 carbonyl group of macrolactone's cycle via oxime linker, the second direction used the modification of the 400-O-group of cladinose via the formation of carbamates of benzoxaboroles. 4''-O-(3-S-(1-Hydroxy-1,3-dihydro-benzo[c][1,2] oxaborole)-methyl-carbamoyl-clarithromycin showed twofold decrease in MICs for S. epidermidis and S. pneumoniae than clarithromycin. 4''-O-Modified clarithromycin demonstrated an efficacy against Gram positive strains only. Compounds with C-9 substitution were more active than 4''-O-substituted antibiotics for susceptible strains E. coli tolC and did not exceed the activity of initial antibiotics.
New conjugates of polyene macrolide amphotericin B with benzoxaboroles: synthesis and properties
作者:Anna N Tevyashova、Alexander M Korolev、Aleksey S Trenin、Lyubov G Dezhenkova、Alexander A Shtil、Vladimir I Polshakov、Oleg Yu Savelyev、Evgenia N Olsufyeva
DOI:10.1038/ja.2016.34
日期:2016.7
A novel series of conjugates of the antifungal antibiotic amphotericin B (AmB) with benzoxaboroles was synthesized. Antifungal activity of new compounds was tested on yeastbeta Candida albicans and Cryptococcus humicolus and filamentous fungi Aspergillus niger and Fusarium oxysporum using the broth microdilution method. The potency of di-modified derivatives against the tested strains was similar to
[EN] BORON CONTAINING POLYBASIC BACTERIAL EFFLUX PUMP INHIBITORS AND THERAPEUTICS USES THEREOF<br/>[FR] INHIBITEURS DES POMPES À EFFLUX BACTÉRIENNES POLYBASIQUES CONTENANT DU BORE ET UTILISATIONS THÉRAPEUTIQUES DE CES DERNIERS
申请人:REMPEX PHARMACEUTICALS INC
公开号:WO2012109164A1
公开(公告)日:2012-08-16
Disclosed herein are polybasic bacterial efflux pump inhibitors containing boronic acid functionality and their methods of synthesis, methods of use, and pharmaceutical compositions. Some embodiments include methods of treating or preventing a bacterial infection by co¬ administering to a subject infected with bacteria or at risk of infection with bacteria the efflux pump inhibitor with another anti-bacterial agent.