Novel C7-Substituted Coumarins as Selective Monoamine Oxidase Inhibitors: Discovery, Synthesis and Theoretical...

Area of Science:

• Medicinal Chemistry
• Neuropharmacology
• Enzyme Inhibition

Background:

• Selective human monoamine oxidase (hMAO) inhibitors are needed for neurological disease treatment.
• High similarity between hMAO subtypes complicates the development of selective inhibitors.

Purpose of the Study:

• To identify novel selective hMAO inhibitors using the BRS-3D method.
• To investigate the structure-activity relationships (SAR) of C7-substituted coumarins against hMAO subtypes.

Main Methods:

• Synthesis and purchase of C7-substituted coumarins.
• Enzyme inhibition assays to determine IC50 values for hMAO-A and hMAO-B.
• Computational studies including docking and molecular dynamics simulations.

Main Results:

• Several novel C7-substituted coumarins exhibited potent hMAO inhibitory activity (sub-micromolar to nanomolar IC50 values).
• Compounds FR1 and SP1 were identified as highly selective hMAO-A inhibitors.
• Compounds FR4 and FR5 demonstrated potent hMAO-B inhibitory activity with high selectivity.

Conclusions:

• C7-substituted coumarins represent a promising scaffold for developing selective hMAO inhibitors.
• The BRS-3D method proved effective for guiding the design of selective enzyme inhibitors.
• Further studies can explore these compounds for potential therapeutic applications in neurological disorders.