Fumaroylamino-4,5-epoxymorphinans and Related Opioids with Irreversible μ Opioid Receptor Antagonist Effects
作者:Humphrey A. Moynihan、Ian. Derrick、Jillian H. Broadbear、Benjamin M. Greedy、Mario D. Aceto、Louis S. Harris、Lauren C. S. Purington、Mark P. Thomas、James H. Woods、John R. Traynor、Stephen M. Husbands、John W. Lewis
DOI:10.1021/jm301096s
日期:2012.11.26
We have.-previously, shown that cinnamoyl derivatives of 14 beta-amino-17-cyclopropylmethyl-7,8-dihydronormorphinone and 7 alpha-aminomethyl-6,14-endoethanonoror-ipavine have pronounced pseudoirreversible mu opioid receptor.. (MOR) antagonism. the present communication describes the synthesis and evaluation of fumaroylamino analogues of these cinnamoylamino derivatives together with some related. fumaroyl derivatives. The predominant activity of the new ligands was MOR antagonism. The fumaroylamino analogues (2a, 5a) of the pseudoirreversible antagonist cinnamoylamino morphinones and oripavines (2b, 5b) were themselves irreversible antagonists in vivo. However the fumaroylamino derivatives had significantly higher MOR efficacy than the cinnamoylamino derivative's in mouse antinociceptive tests. Comparison Of 2a and 5a with the prototypic fumaroylamino opioid beta-FNA (1a) shows that they have similar MOR irreversible antagonist actions but differ in the nature of their opioid receptor. agonist effects; 2a is a predominant MOR agonist and Sa shows no opioid receptor selectivity, whereas. the agonist effect of beta-FNA is Clearly kappa opioid riceptor (KOR) mediated.