MAO inhibitory activity modulation: 3-Phenylcoumarins versus 3-benzoylcoumarins.

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Matos MJ, Vazquez-Rodriguez S, Uriarte E, Santana L, Vina D

MAO inhibitory activity modulation: 3-Phenylcoumarins versus 3-benzoylcoumarins.

Bioorg Med Chem Lett. 2011 Jul 15;21(14):4224-7. doi: 10.1016/j.bmcl.2011.05.074. Epub 2011 May 30.

PubMed ID
21684743 [ View in PubMed
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Abstract

With the aim of finding the structural features for the human MAO inhibitory activity and selectivity, in the present communication we report the synthesis, pharmacological evaluation and a comparative study of a new series of 3-phenylcoumarins (compounds 1-4) and 3-benzoylcoumarins (compounds 5-8). A bromo atom and a methoxy/hydroxy substituent were introduced in these scaffolds, at six and eight positions of the coumarin moiety, respectively. The synthesized compounds 1-8 were evaluated as MAO-A and B inhibitors using R-(-)-deprenyl and iproniazide as reference compounds. The presence or absence of a carbonyl group between the coumarin and the phenyl substituent in 3 position remarks, respectively, the MAO-A or MAO-B inhibitory activity. Some of the new compounds showed MAO-B inhibitory activities in the low nanomolar range. Compound 2 (IC(50)=1.35nM) showed higher inhibitory activity than the R-(-)-deprenyl (IC(50)=19.60nM) and higher MAO-B selectivity, with more than 74,074-fold inhibition level, respecting to the MAO-A isoform.

DrugBank Data that Cites this Article

Binding Properties
DrugTargetPropertyMeasurementpHTemperature (°C)
IproniazidAmine oxidase [flavin-containing] BIC 50 (nM)7540N/AN/ADetails
SelegilineAmine oxidase [flavin-containing] AIC 50 (nM)67250N/AN/ADetails
SelegilineAmine oxidase [flavin-containing] BIC 50 (nM)19.6N/AN/ADetails