Indolylalkyltriphenylphosphonium Analogues Are Membrane-Depolarizing Mycobactericidal Agents
摘要:
Agents that selectively target the mycobacterial membrane could potentially shorten treatment time for tuberculosis, reduce relapse, and curtail emergence of resistant strains. The lipophilicity and extensive charge-delocalized state of the triphenylphosphonium cation strongly favor accumulation within bacterial membranes. Here, we explored the antimycobacterial activities and membrane-targeting properties of indolylalkyltriphenylphosphonium analogues. The most active analogues preferentially inhibited growth of Mycobacterium tuberculosis H37Rv (MIC50 2-4 mu M) and were bactericidal against Mycobacterium bovis BCG (MBC99 3 mu M). In spite of their propensity to accumulate within membranes, we found no evidence that these compounds permeabilized mycobacterial membranes or induced cell-envelope stress. Our investigations indicated that their bacterical effects stem from sustained depolarization of mycobacterial membranes and ensuing disruptive effects on electron transfer and cell division.
BICYCLIC-NITROGEN COMPOUNDS AS MODULATORS OF GHRELIN RECEPTOR AND USES THEREOF
申请人:Burstein S. Ethan
公开号:US20070213359A1
公开(公告)日:2007-09-13
Disclosed herein are compounds of Formula I
as defined herein, or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, that modulates the activity of a ghrelin receptor. Disclosed herein are also methods of treating diseases or conditions that comprise administering to a subject in need thereof a therapeutically effective amount of a compound of Formula I.
[EN] BICYCLIC NITROGEN COMPOUNDS AS MODULATORS OF GHRELIN RECEPTOR AND USES THEREOF<br/>[FR] COMPOSES BICYCLIQUES A BASE D'AZOTE EN TANT QUE MODULATEURS DE RECEPTEUR DE GHRELINE ET LEURS UTILISATIONS
申请人:ACADIA PHARM INC
公开号:WO2007079239A2
公开(公告)日:2007-07-12
[EN] Disclosed herein are compounds of Formula I as defined herein, or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, that modulates the activity of a ghrelin receptor. Disclosed herein are also methods of treating diseases or conditions that comprise administering to a subject in need thereof a therapeutically effective amount of a compound of Formula I. [FR] La présente invention concerne des composés de formule (I) tel que définie dans la description, ou un sel, ester, amide, ou prodrogue pharmaceutiquement acceptable de ceux-ci, qui assurent la modulation de l'activité d'un récepteur de ghréline. L'invention concerne également des procédés de traitement de maladies ou de pathologies comprenant l'administration à un sujet qui en a besoin d'une quantité thérapeutique d'un composé de formule (I).
Indolylalkyltriphenylphosphonium Analogues Are Membrane-Depolarizing Mycobactericidal Agents
作者:Ming Li、Samuel A. Nyantakyi、Pooja Gopal、Dinah binte Aziz、Thomas Dick、Mei-Lin Go
DOI:10.1021/acsmedchemlett.7b00287
日期:2017.11.9
Agents that selectively target the mycobacterial membrane could potentially shorten treatment time for tuberculosis, reduce relapse, and curtail emergence of resistant strains. The lipophilicity and extensive charge-delocalized state of the triphenylphosphonium cation strongly favor accumulation within bacterial membranes. Here, we explored the antimycobacterial activities and membrane-targeting properties of indolylalkyltriphenylphosphonium analogues. The most active analogues preferentially inhibited growth of Mycobacterium tuberculosis H37Rv (MIC50 2-4 mu M) and were bactericidal against Mycobacterium bovis BCG (MBC99 3 mu M). In spite of their propensity to accumulate within membranes, we found no evidence that these compounds permeabilized mycobacterial membranes or induced cell-envelope stress. Our investigations indicated that their bacterical effects stem from sustained depolarization of mycobacterial membranes and ensuing disruptive effects on electron transfer and cell division.