Abstract
New dibenzo[b,e]thiepins were synthesized, characterized by elemental analysis, spectral studies (1H-NMR, 13C-NMR, IR) and screened for their microbicidal and antibiofilm properties. The new dibenzo[b,e]thiepins and their sulfones exhibited a broad spectrum of antimicrobial activity (superior for the S-oxidized compounds) being effective at low concentrations against a wide range of infectious microorganisms. The oximes exhibited anti- A. baumanii activity.
Some of the compounds exhibited good antibiofilm activity against the Gram-negative, non-fermentative bacilli P. aeruginosa and A. baumanii, and their possible target suggested by molecular modeling being the synthesis of the quorum sensing molecules employed by the Gram-negative microorganisms represented by N-acyl-l-homoserine lactones.Keywords: Dibenzothiepins, Anti-biofilm activity, Molecular modelling, A. baumanii
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