Effects of substitution on the pyrrole N atom in derivatives of tetrahydronaltrindole, tetrahydrooxymorphindole, and a related 4,5-epoxyphenylpyrrolomorphinan.
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'-pyrrolomorphinan (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 agonists without substantial selectivity. The TOMI derivatives (8) were DOR agonists with significant selectivity. In vivo the DOR antagonist activity of 7d was confirmed, but the predominant agonist effect of 8d was shown to be mu opioid receptor mediated.
Srivastava
Sanjay K
SK
Department of Pharmacy and Pharmacology, University of Bath, Bath, BA2 7AY, U.K.
Shefali
Shefali
S
Miller
Carl N
CN
Aceto
Mario D
MD
Traynor
John R
JR
Lewis
John W
JW
Husbands
Stephen M
SM
D000700:Analgesics / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D000818:Animals; D001667:Binding, Competitive; D016466:CHO Cells; D006224:Cricetinae; D003412:Cricetulus; D006801:Humans; D007211:Indoles / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D008024:Ligands; D009019:Morphinans / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D009271:Naltrexone / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D011869:Radioligand Assay; D017465:Receptors, Opioid, delta / Q000819:agonists / Q000037:antagonists & inhibitors; D017473:Receptors, Opioid, kappa / Q000819:agonists / Q000037:antagonists & inhibitors; D017450:Receptors, Opioid, mu / Q000819:agonists / Q000037:antagonists & inhibitors; D013329:Structure-Activity Relationship
C495231:17-cyclopropylmethyl-3,14-dihydroxy-4,5-epoxy-4'-phenyl-6,7-2',3'-pyrrolomorphinan; D000700:Analgesics; D007211:Indoles; D008024:Ligands; D009019:Morphinans; D017465:Receptors, Opioid, delta; D017473:Receptors, Opioid, kappa; D017450:Receptors, Opioid, mu; D009271:Naltrexone