Synthesis and Structure−Activity Relationship Studies of 3,6-Diazabicyclo[3.2.0]heptanes as Novel α4β2 Nicotinic Acetylcholine Receptor Selective Agonists

doi:10.1021/JM070755H

Paper

Synthesis and Structure−Activity Relationship Studies of 3,6-Diazabicyclo[3.2.0]heptanes as Novel α4β2 Nicotinic Acetylcholine Receptor Selective Agonists

Published Oct 11, 2007 · Jianguo Ji, M. Schrimpf, K. B. Sippy

Journal of Medicinal Chemistry

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43

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Abstract

A series of novel, potent neuronal nicotinic acetylcholine receptor (nAChR) ligands derived from 3,6-diazabicyclo[3.2.0]heptane have been synthesized and evaluated for binding affinity and agonist activity at the α4β2 nAChR subtype. Structure−activity relationship studies of these novel nAChR ligands focused on substitution effects on the pyridine ring, as well as stereo- and regiochemical influences of the 3,6-diazabicyclo[3.2.0]heptane core. Small 5-substituents on the pyridine ring had a modest impact on the binding affinities and functional activities. 6-Bromo, 6-chloro, and 6-methyl substituents on the pyridine ring led to increased binding affinities and improved functional activities. Most of the 6-N-pyridinyl-substituted 3,6-diazabicyclo[3.2.0]heptanes are selective for the α4β2 nAChR subtype. Compounds (1R,5S)-25, (1R,5S)-55, and (1R,5S)-56 were virtually inactive as agonists at the hα3β4 nAChR but retained potency and efficacy at the hα4β2 nAChR subtype. 3-N-Pyridinyl-substituted series demonstr...

In Vitro Study

Study Snapshot

Novel 42 nicotinic acetylcholine receptor selective agonists synthesized from 3,6-diazabicyclo[3.2.0]heptanes show potential as neuronal nicotinic acetylcholine receptor ligands.

PopulationOlder adults (50-71 years)

Sample size24

MethodsObservational

OutcomesBody Mass Index projections

ResultsSocial networks mitigate obesity in older groups.

Synthesis and Structure−Activity Relationship Studies of 3,6-Diazabicyclo[3.2.0]heptanes as Novel α4β2 Nicotinic Acetylcholine Receptor Selective Agonists

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