Development of antimycobacterial tetrahydrothieno[2,3-c]pyridine-3-carboxamides and hexahydrocycloocta[b]thiophene-3-carboxamides: Molecular modification from known antimycobacterial lead.

Abstract:

:Twenty derivatives of 2,6-disubstituted 4,5,6,7-tetrahydrothieno[2,3-c]pyridine-3-carboxamide and ten of 2-substituted 4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxamide were synthesized by molecular modification of a known antimycobacterial molecule. Compounds were evaluated in vitro against Mycobacterium tuberculosis (MTB), and cytotoxicity against RAW 264.7 cell line. Among the compounds, 2-(4-phenoxybenzamido)-4,5,6,7,8,9-hexahydrocycloocta[b]thiophene-3-carboxamide (12f) was found to be the most active compound against MTB with MIC of 3.70 μM and was more potent than Ethambutol (MIC of 7.64 μM), Ciprofloxacin (MIC of 9.41 μM) and standard lead compound SID 92097880 (MIC of 9.15 μM). Compound 12f also showed MTB MIC of 1.23 μM in the presence of an efflux pump inhibitor verapamil, and showed no cytotoxicity at 50 μM.

journal_name

Eur J Med Chem

authors

Nallangi R,Samala G,Sridevi JP,Yogeeswari P,Sriram D

doi

10.1016/j.ejmech.2014.02.028

subject

Has Abstract

pub_date

2014-04-09 00:00:00

pages

110-7

eissn

0223-5234

issn

1768-3254

pii

S0223-5234(14)00148-2

journal_volume

76

pub_type

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