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Design, synthesis, and biological activity of 5'-phenyl-1,2,5,6-tetrahydro-3,3'-bipyridine analogues as potential antagonists of nicotinic acetylcholine receptors.


ABSTRACT: Starting from a known non-specific agonist (1) of nicotinic acetylcholine receptors (nAChRs), rationally guided structural-based design resulted in the discovery of a small series of 5'-phenyl-1,2,5,6-tetrahydro-3,3'-bipyridines (3a-3e) incorporating a phenyl ring off the pyridine core of 1. The compounds were synthesized via successive Suzuki couplings on a suitably functionalized pyridine starting monomer 4 to append phenyl and pyridyl substituents off the 3- and 5-positions, respectively, and then subsequent modifications were made on the flanking pyridyl ring to provide target compounds. Compound 3a is a novel antagonist, which is highly selective for ?3?4 nAChR (Ki=123nM) over the ?4?2 and ?7 receptors.

SUBMITTER: Jin Y 

PROVIDER: S-EPMC5592152 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature

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Design, synthesis, and biological activity of 5'-phenyl-1,2,5,6-tetrahydro-3,3'-bipyridine analogues as potential antagonists of nicotinic acetylcholine receptors.

Jin Yafei Y   Huang Xiaoqin X   Papke Roger L RL   Jutkiewicz Emily M EM   Showalter Hollis D HD   Zhan Chang-Guo CG  

Bioorganic & medicinal chemistry letters 20170814 18


Starting from a known non-specific agonist (1) of nicotinic acetylcholine receptors (nAChRs), rationally guided structural-based design resulted in the discovery of a small series of 5'-phenyl-1,2,5,6-tetrahydro-3,3'-bipyridines (3a-3e) incorporating a phenyl ring off the pyridine core of 1. The compounds were synthesized via successive Suzuki couplings on a suitably functionalized pyridine starting monomer 4 to append phenyl and pyridyl substituents off the 3- and 5-positions, respectively, and  ...[more]

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