Synthesis and biological evaluation of new opioid agonist and neurokinin-1 antagonist bivalent ligands
作者:Ruben Vardanyan、Vlad K. Kumirov、Gary S. Nichol、Peg Davis、Erika Liktor-Busa、David Rankin、Eva Varga、Todd Vanderah、Frank Porreca、Josephine Lai、Victor J. Hruby
DOI:10.1016/j.bmc.2011.08.027
日期:2011.10
Newly designed bivalent ligands-opioid agonist/NK1-antagonists have been synthesized. The synthesis of new starting materials-carboxy-derivatives of Fentanyl (1a-1c) was developed. These products have been transformed to 'isoimidium perchlorates' (2a-c). The new isoimidium perchlorates have been successfully implemented in nucleophilic addition reactions, with L-tryptophan 3,5-bis(trifluoromethyl)benzyl ester to give the target compounds-amides (3a-c). Perchlorates (2a-c) successfully undergo reactions with other nucleophiles such as alcohols, amines or hydrazines. The obtained compound 3b exhibited mu-opioid agonist activity and NK1-antagonist activity and may serve as a useful lead compound for the further design of a new series of opioid agonist/NK1-antagonist compounds. Published by Elsevier Ltd.