Synthesis and biological evaluation of 2-substituted quinoline 6-carboxamides as potential mGluR1 antagonists for the treatment of neuropathic pain

Abstract

A series of 2-amino and 2-methoxy quinoline-6-carboxamide derivatives have been synthesized and their metabotropic glutamate receptor type 1 (mGluR1) antagonistic activities were evaluated in a functional cell-based assay. The compound 13c showed the highest potency with IC 50 value of 2.16μM against mGluR1. Finally, in vivo evaluation of 13c in the rat spinal nerve ligation (SNL) model exhibited weak analgesic effects with regard to both mechanical allodynia and cold allodynia. © 2014 The Pharmaceutical Society of Japan.