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(R)-(-)-10-methyl-11-hydroxyaporphine: a highly selective serotonergic agonist
J G Cannon1, P Mohan, J Bojarski
1Division of Medicinal and Natural Products Chemistry, College of Pharmacy, University of Iowa, Iowa City 52242.
Journal of Medicinal Chemistry
|February 1, 1988
Summary
This study synthesized a novel apomorphine congener, initially intended as a dopamine agonist. Unexpectedly, the compound demonstrated high selectivity as a serotonin 5-HT1A receptor agonist, not a dopamine agonist.
Area of Science:
- Medicinal Chemistry
- Neuropharmacology
- Organic Synthesis
Background:
- Previous research identified a dopaminergic agonist prodrug with a specific substitution pattern.
- This pattern was incorporated into the aporphine ring system to create a novel apomorphine congener.
Purpose of the Study:
- To synthesize and characterize a new compound based on the aporphine scaffold.
- To investigate the pharmacological profile of the synthesized compound, particularly its interaction with dopamine receptors.
Main Methods:
- Synthesis involved acid-catalyzed rearrangement of a morphine derivative.
- Further molecular modifications were performed on the intermediate product.
- Pharmacological assays were conducted to assess receptor binding and activity.
Main Results:
- The synthesized compound, an apomorphine congener with a methyl group replacing the 10-OH, showed no activity at dopamine receptors.
- The compound exhibited potent and selective agonist activity at serotonin 5-HT1A receptors.
Conclusions:
- The novel aporphine congener functions as a selective serotonergic agonist, not a dopaminergic one.
- This finding highlights the complex structure-activity relationships in designing receptor-specific ligands.