Design, Synthesis and in vitro Antimicrobial Activity Evaluation of Novel Hybrids of Lichexantone-THC Derivatives

Ana Camila Micheletti, Neli Kika Honda, Nadia Cristina Pereira Carvalho, Dênis Pires de Lima, Adilson Beatriz


Two novel hybrid lichexantone-THC (benzopirane group) derivatives as potential antimicrobial agents were designed and prepared from norlichexanthone and (S)-cis-verbenol in two steps. The newly synthesized compounds were characterized by 1H-NMR, 13C-NMR and MS. In addition, we evaluated the in vitro antimicrobial activity against Gram-positive (Staphylococcus aureus, Enterococcus faecalis and Enterococcus faecium) and Gram- negative (Escherichia coli, Enterobacter cloacea, Klebisiella pneumoniae, Acinetobacter baumannii and Pseudomonas aeruginosa) bacterial strains. The bioassay results indicate that the compounds namely 5 and 6 proved active against Gram-positive strains (standard and clinical) in comparison with reference drugs.





xanthones; cannabinoids; structure modification; antibiotic activity

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Orbital: The Electronic Journal of Chemistry (e-ISSN 1984-6428) is a quarterly scientific journal published by the Institute of Chemistry of the Universidade Federal de Mato Grosso do Sul, Brazil. Orbital is a peer-reviewed, open-access journal.