Objectives We report the pharmacological evaluation of a new series of 3-aminocoumarins differently substituted with hydroxyl groups, which have been synthesized because they include in their structures the tyrosine fragment (tyrosine-like compounds), with the aim of discovering structural features necessary for tyrosinase inhibitory activity. Methods The synthesized compounds 4 and 7-9 were evaluated in vitro as mushroom tyrosinase inhibitors. Key findings Two of the described compounds showed lower IC50 (concentration giving 50% inhibition of tyrosinase activity) than umbelliferone, used as a reference compound. Conclusions Compound 7 (IC50 = 53 μm) was the best tyrosinase inhibitor of this small series, having an IC50 value 10-fold lower than umbelliferone. Compound 7 (3-amino-7-hydroxycoumarin) had amino and hydroxyl groups precisely mimicking the same positions that both groups occupy on the tyrosine molecule. © 2012 The Authors. JPP © 2012 Royal Pharmaceutical Society.
CITATION STYLE
Matos, M. J., Santana, L., Uriarte, E., Serra, S., Corda, M., Fadda, M. B., … Fais, A. (2012). Tyrosine-like condensed derivatives as tyrosinase inhibitors. Journal of Pharmacy and Pharmacology, 64(5), 742–746. https://doi.org/10.1111/j.2042-7158.2012.01467.x
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