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Published on: July 10, 2018
Benzo[7]annulene-based GluN2B selective NMDA receptor antagonists: Surprising effect of a nitro group in 2-position
Sandeep Gawaskar1, Dirk Schepmann2, Alessandro Bonifazi3
1Institut für Pharmazeutische und Medizinische Chemie der Universität Münster, Corrensstraße 48, 48149 Münster, Germany; NRW Graduate School of Chemistry, Wilhelm-Klemm-Straße 10, 48149 Münster, Germany; Cells-in-Motion Cluster of Excellence (EXC 1003-CiM), Westfälische Wilhelms-Universität Münster, Germany.
Abstract:
Benzo[7]annulen-7-amines 7 without further polar substituents have been reported as conformationally restricted Ro 25-6981 analogs and show unexpectedly high GluN2B affinity. Herein the corresponding 2-NO2 derivatives 8 were synthesized and pharmacologically evaluated. NO2 derivatives 8 show 5- to 10-fold higher GluN2B affinity than the unsubstituted ligands 7. Docking studies of ligands 7c and 8c reveal an important contribution of the 2-NO2-substituent in determining the binding pose and modulating the GluN2B affinity.
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