Design, synthesis, and evaluation of novel 2-substituted 1,4-benzenediol library as antimicrobial agents against clinically relevant pathogens

Dublin Core

Title

Design, synthesis, and evaluation of novel 2-substituted 1,4-benzenediol library as antimicrobial agents against clinically relevant pathogens

Subject

HONGOS
ANTIMICROBIANOS
MECANISMOS DE ACCION
TOXICIDAD
BENCENEDIOL
BIBLIOGRAFIA NACIONAL QUIMICA
2019

Abstract

Development of new antimicrobial agents, capable of combating resistant and multidrug-resistant fungal and bacterial clinical strains, is necessary. This study presents the synthesis and antimicrobial screening of 42 2-substituted-1,4-benzenediols, being 10 novel compounds. In total, 23 compounds showed activity against fungi and/or bacteria. Benzenediol compounds 2, 5, 6, 8, 11, and 12 demonstrated broad spectrum antimicrobial actions, including resistant and multidrug-resistant species of dermatophytes (Trichophyton mentagrophytes), Candida spp. and the ESKAPE panel of bacteria. Minimum inhibitory concentrations of these compounds for fungi and bacterial strains ranged from 25 to 50 µg/ml and 8–128 µg/ml, respectively. The antifungal mechanism of action is related to the fungal cell wall of dermatophytes and membrane disruption to dermatophytes and yeasts, in the presence of compound 8. Specific structural changes, such as widespread thinning along the hyphae and yeast lysis, were observed by scanning electron microscopy. The effects of compound 8 on cell viability are dose-dependent; however they did not cause genotoxicity and mutagenicity in human leukocyte cells nor haemolysis. Moreover, the compounds were identified as nonirritant by the ex-vivo Hen’s egg test-chorioallantoic membrane (HET-CAM). The furan-1,4-benzenediol compound 5 showed in vivo efficacy to combat S. aureus infection using embryonated chicken eggs. Therefore, the compounds 8, and 5 are promising as hits for the development of new antimicrobial drugs with reduced toxicity.

Creator

Flores Dalla Lana, Daiane
Batista, B. G.
da Rosa Machado, G
Teixeira, M. L.
de Oliveira, L. F. S.
Machado, M. M.
Lopes, W.
Vainstein, M. H.
Peixoto de Abreu Lima, A.
Silva, E. E.
Fuentefria, A. M.
Silveira, G. P.

Source

Saudi Pharmaceutical Journal v, 27, no. 8, 2019. -- p. 1064-1074

Publisher

Elsevier

Date

2019

Rights

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Format

PDF

Language

Inglés

Type

Artículo

Identifier

DOI: 10.1016/j.jsps.2019.09.003

Document Item Type Metadata

Original Format

PDF
Date Added
January 13, 2020
Collection
Bibliografía Nacional Química
Item Type
Document
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Citation
Flores Dalla Lana, Daiane et al., “Design, synthesis, and evaluation of novel 2-substituted 1,4-benzenediol library as antimicrobial agents against clinically relevant pathogens,” RIQUIM - Repositorio Institucional de la Facultad de Química - UdelaR, accessed November 17, 2025, https://riquim.fq.edu.uy/items/show/5946.