Abstract:
:Aminomorphinans are a relatively young class of opioid drugs among which substances of high in vitro efficacy and favorable in vivo action are found. We report the synthesis and pharmacological evaluation of novel 6β-acylaminomorphinans. 6β-Morphinamine and 6β-codeinamine were stereoselectively synthesized by Mitsunobu reaction. The aminomorphinans were subsequently acylated with diversely substituted cinnamic acids. In vitro binding studies on cinnamoyl morphinamines showed moderate affinity for all opiate receptors with some selectivity for mu opioid receptors, while cinnamoyl codeinamines only showed affinity for mu opioid receptors. In vivo analgesia studies showed significant analgesic activity of 6β-cinnamoylmorphinamine mediated by mu and delta receptors. The lead compound was found to be roughly equipotent to morphine (ED₅₀ 3.13 ± 1.09 mg/kg) but devoid of the dangerous side-effect respiratory depression, a major issue associated with traditional opioid therapy.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Váradi A,Hosztafi S,Le Rouzic V,Tóth G,Urai Á,Noszál B,Pasternak GW,Grinnell SG,Majumdar Sdoi
10.1016/j.ejmech.2013.09.031subject
Has Abstractpub_date
2013-11-01 00:00:00pages
786-9eissn
0223-5234issn
1768-3254pii
S0223-5234(13)00604-1journal_volume
69pub_type
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