4‘-Arylpyrrolomorphinans: Effect of a Pyrrolo-N-benzyl Substituent in Enhancing δ-Opioid Antagonist Activity
摘要:
A new method for the preparation of N-benzylpyrrolomorphinans has been developed. Thus Michael reaction of the benzylimines of oxycodones and oxymorphones with nitrostyrenes gave a series of 4'-aryl-N-benzylpyrrolomorphinans. These were selective delta antagonists of much higher in vitro potency (with 5a having K-e delta = <1 nM) than their binding affinities predicted. In mice in vivo assays 5a showed good delta antagonist activity in the antiwrithing analgesic assay and also inhibited delta agonist-induced convulsant activity.
Effects of Substitution on the Pyrrole N Atom in Derivatives of Tetrahydronaltrindole, Tetrahydrooxymorphindole, and a Related 4,5-Epoxyphenylpyrrolomorphinan
作者:Sanjay K. Srivastava、Shefali、Carl N. Miller、Mario D. Aceto、John R. Traynor、John W. Lewis、Stephen M. Husbands
DOI:10.1021/jm040817t
日期:2004.12.1
The effect of substitution of the pyrrolo- and indolo-N atoms in tetrahydronaltrindole (TNTI), tetrahydrooxymorphindole (TOMI), and 17-cyclopropylmethyl-3,14-dihydroxy-4,5-epoxy-4'-phenyl-6,7:2',3'-pyrrolomorphina n (4) is reported. In opioid functional assays 4 were potent deltaopioid receptor (DOR) antagonists while the TNTI derivatives (7) were potent DOR antagonists or low-efficacy DOR partial