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2-Benzylidene-1-indanone derivatives as inhibitors of monoamine oxidase

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Elsevier

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In the present study, a series of twenty-two 2-benzylidene-1-indanone derivatives were synthesised and evaluated as inhibitors of recombinant human monoamine oxidase (MAO) A and B. The 2-benzylidene-1-indanone derivatives are structurally related to a series of benzylideneindanone derivatives which has previously been found to be MAO-B inhibitors. This study finds that the 2-benzylidene-1-indanones are MAO-B specific inhibitors with IC50 values <2.74 μM. Among the compounds evaluated, twelve compounds exhibited IC50 < 0.1 μM and may be considered as high potency inhibitors. The 2-benzylidene-1-indanone derivatives also inhibited MAO-A with the most potent inhibition exhibited by 5g (IC50 = 0.131 μM). An analysis of the structure–activity relationships for MAO-B inhibition show that substitution on the A-ring with a 5-hydroxy group and on the B-ring with halogens and the methyl group yield high potency inhibition. It may therefore be concluded that 2-benzylidene-1-indanone analogues are promising leads for design of therapies for disorders such as Parkinson’s disease

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Nel, M.S. et al. 2016. 2-Benzylidene-1-indanone derivatives as inhibitors of monoamine oxidase. Bioorganic & medicinal chemistry letters, 26(19):4599-4605. [https://doi.org/10.1016/j.bmcl.2016.08.067]

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