Reversed isoniazids: Design, synthesis and evaluation against Mycobacterium tuberculosis.

Abstract:

:Novel reversed isoniazid (RINH) agents were synthesized by covalently linking isoniazid with various efflux pump inhibitor (EPI) cores and their structural motifs. These RINH agents were then evaluated for anti-mycobacterial activity against sensitive, isoniazid mono-resistant and MDR clinical isolates of M. tuberculosis and a selected number of compounds were also tested ex vivo for intracellular activity as well as in the ethidium bromide (EB) assay for efflux pump inhibition efficacy. The potency of some compounds against various strains of M. tuberculosis (4a-c, 7 and 8; H37Rv-MIC99 ≤1.25 µM, R5401-MIC99 ≤2.5 µM, X_61-MIC99 ≤5 µM) demonstrated the potential of the reversed anti-TB agent strategy towards the development of novel anti-mycobacterial agents to address the rapidly growing issue of resistance. Further, macrophage activity with >90% inhibition by 1a-c and 3b (MIC90 ≤13.42 µM) and inhibition of EB efflux demonstrated by these compounds are encouraging.

journal_name

Bioorg Med Chem

authors

Kumar M,Singh K,Ngwane AH,Hamzabegovic F,Abate G,Baker B,Wiid I,Hoft DF,Ruminski P,Chibale K

doi

10.1016/j.bmc.2017.12.047

subject

Has Abstract

pub_date

2018-02-15 00:00:00

pages

833-844

issue

4

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(17)31809-6

journal_volume

26

pub_type

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