SYNTHESIS, IN-VITRO, AND IN-VIVO ACTIVITY OF N-P-SUBSTITUTEDBENZYL- (-)- AND (-N-NORMETAZOCINES, (-)- AND (+)-N-NORMORPHINANS, N-NORKETOBEMIDONES, AND (-)-N-NOR-4,5-EPOXYMORPHINANS())
El. May et al., SYNTHESIS, IN-VITRO, AND IN-VIVO ACTIVITY OF N-P-SUBSTITUTEDBENZYL- (-)- AND (-N-NORMETAZOCINES, (-)- AND (+)-N-NORMORPHINANS, N-NORKETOBEMIDONES, AND (-)-N-NOR-4,5-EPOXYMORPHINANS()), Medicinal chemistry research, 8(6), 1998, pp. 311-321
N-benzyl- and N-p-nitrobenzyl-N-norketobemidone, and N-p-fluorobenzyl-
N-normetazocine have been synthesized and found to have equivalent or
higher affinity for the sigma(1)-binding site than the previously desc
ribed (+)-N-benzylnormetazocine. None of the examined compounds had si
gnificant affinity for the sigma(2)-binding site and few had high affi
nity for mu-, delta, and kappa-opioid receptors. (-)-N-Benzyl-N-normet
azocine displayed weak agonist-antagonist activity and (-)-N-benzylnor
oxymorphone had one-tenth the antagonist activity of naloxone.