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In searching for better therapeutic alternatives to treat cutaneous leishmaniasis (CL), this study aimed to obtain and evaluate the efficacy and toxicity of new chroman-4-one hydrazones derivatives. Compounds were prepared and characterized, and then transformed into hydrazonas for molecular optimization. Their cytotoxicity was tested in different cell types using an in vitro MTT assay and the efficacy was evaluated using an in vitro macrophage intracellular amastigotes of Leishmania (Viannia) panamensis and L. (V) braziliensis by flow cytometry. The therapeutic effect of two formulations of chroman-4-one hydrazones on the CL induced by L. (V) braziliensis in golden hamsters was determined according to the size of lesions after treatment. The effect of these compounds in the production of inflammatory mediators and cell migration was also determined by in vitro assays using human fibroblasts models. Neither cytotoxicity nor genotoxicity was observed. The benzoic acid hydrazone derivative 2-(2,3-dihydro-4H-1-benzopyran-4-ylidene) hydrazide (4), produced a higher percentage of clinical cures, followed by benzoic acid, 2-(2,3-dihydro-4H-1-benzothiopyran-4-ylidene) hydrazide (3), while benzoic acid, 2-(2,3-dihydro-1,1-dioxide-4H-1-benzothiopyran-4-ylidene) hydrazide (5) and 4-pyridinecarboxylic acid, 2-(4H-1-benzopyran-4-ylidene) hydrazide (6) caused a poor therapeutic response. The compound 4 also showed an effect in the inflammatory and fibroblast migration processes. In conclusion, this is the first report of antileishmanial activity combined with inflammatory and wound healing properties. Results obtained here suggest that this strategy could be a good alternative for development of new drugs for the treatment of CL.
Medicinal Chemistry Research
Universidad de Santander UDES. Vigilada Mineducación.
Resolución otorgada por el Ministerio de Educación Nacional: No. 6216 del 22 de diciembre de 2005 / Personería Jurídica 810 de 12/03/96.
Institución sujeta a inspección y vigilancia por el Ministerio de Educación Nacional. Resolución 12220 de 2016.
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