Synthesis, Docking Studies, and In Vitro Evaluation of Some Novel Thienopyridines and Fused Thienopyridine-Quinolines as Antibacterial Agents and DNA Gyrase Inhibitors
A series of novel thienopyridines and pyridothienoquinolines ( ) was synthesized, starting with 2-thioxo-1,2-dihydropyridine-3-carbonitriles and . All compounds were evaluated for their in vitro antimicrobial activity against six bacterial strains. Compounds and showed significant growth inhibition...
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Published in | Molecules (Basel, Switzerland) Vol. 24; no. 20; p. 3650 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Switzerland
MDPI AG
10.10.2019
MDPI |
Subjects | |
Online Access | Get full text |
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Summary: | A series of novel thienopyridines and pyridothienoquinolines (
) was synthesized, starting with 2-thioxo-1,2-dihydropyridine-3-carbonitriles
and
. All compounds were evaluated for their in vitro antimicrobial activity against six bacterial strains. Compounds
and
showed significant growth inhibition activity against both Gram-positive and Gram-negative bacteria compared with the reference drug. The most active compounds (
and
) against
were also tested for their in vitro inhibitory action on methicillin-resistant
(MRSA). The tested compounds showed promising inhibition activity, with the performance of
being equal to gentamicin and that of
exceeding it. Moreover, the most promising compounds were also screened for their
DNA gyrase inhibitory activity, compared with novobiocin as a reference DNA gyrase inhibitor. The results revealed that compounds (
and
) had the highest inhibitory capacity, with IC
values of 2.26-5.87 µM (that of novobiocin is equal to 4.17 µM). Docking studies were performed to identify the mode of binding of the tested compounds to the active site of
DNA gyrase B. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1420-3049 1420-3049 |
DOI: | 10.3390/molecules24203650 |