Abstract:
:Protecting enkephalins, endogenous opioid peptides released in response to nociceptive stimuli, is an innovative approach for acute and neuropathic pain alleviation. This is achieved by inhibition of their enzymatic degradation by two membrane-bound Zn-metallopeptidases, neprilysin (NEP, EC 3.4.24.11) and aminopeptidase N (APN, EC 3.4.11.2). Selective and efficient inhibitors of both enzymes, designated enkephalinases, have been designed that markedly increase extracellular concentrations and half-lives of enkephalins, inducing potent antinociceptive effects. Several chemical families of Dual ENKephalinase Inhibitors (DENKIs) have previously been developed but devoid of oral activity. We report here the design and synthesis of new pro-drugs, derived from co-drugs combining a NEP and an APN inhibitor through a disulfide bond with side chains improving oral bioavailability. Their pharmacological properties were assessed in various animal models of pain targeting central and/or peripheral opioid systems. Considering its efficacy in acute and neuropathic pain, one of these new DENKIs, 19-IIIa, was selected for clinical development.
journal_name
J Med Chemjournal_title
Journal of medicinal chemistryauthors
Poras H,Bonnard E,Dangé E,Fournié-Zaluski MC,Roques BPdoi
10.1021/jm500602hsubject
Has Abstractpub_date
2014-07-10 00:00:00pages
5748-63issue
13eissn
0022-2623issn
1520-4804journal_volume
57pub_type
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