Optically pure (-)-4-[(N-allyl-3-methyl-4-piperidinyl)phenyl-amino]-N,N-diethylbenzami de displays selective binding and full agonist activity for the delta opioid receptor |
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Authors: | Thomas J B Atkinson R N Herault X M Rothman R B Mascarella S W Dersch C M Xu H Horel R B Carroll F I |
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Affiliation: | Chemistry and Life Sciences, Research Triangle Institute, Research Triangle Park, NC 27709, USA. |
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Abstract: | The optical isomers of 4-[(N-allyl-3-methyl-4-piperidinyl)phenylamino]-N,N-diethylbenzamide+ ++ (3) have been prepared and tested in both binding and functional assays. The data show that (-)-3 is responsible for the delta opioid activity demonstrated by the racemic material. This compound displays a binding affinity of 5.5 nM for the delta opioid receptor as well as a 470-fold delta versus mu selectivity. Importantly, (-)-3 is a full agonist at the delta receptor in comparison with SNC-80 (2). Taken together, the data suggest that (-)-3 behaves more like the prototypical delta agonists, BW373U86 or SNC-80, and less like the peptidomimetic compound SL-3111 (5). |
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