The enantiomers of epiboxidine and of two related analogs: Synthesis and estimation of their binding affinity at α4β2 and α7 neuronal nicotinic acetylcholine receptors

被引:7
作者
Dallanoce, Clelia [1 ]
Matera, Carlo [1 ]
De Amici, Marco [1 ]
Rizzi, Luca [1 ]
Pucci, Luca [2 ]
Gotti, Cecilia [2 ]
Clementi, Francesco [2 ]
De Micheli, Carlo [1 ]
机构
[1] Univ Milan, Dipartimento Sci Farmaceut Pietro Pratesi, I-20133 Milan, Italy
[2] CNR, Ist Neurosci, I-20133 Milan, Italy
关键词
epibatidine; epiboxidine and analogs; neuronal nicotinic acetylcholine receptors; chiral resolution; enantiopure nicotinic ligands; binding affinity; TERT-BUTANESULFINYL IMINES; EPIBATIDINE ISOMERS; REAGENTS; LIGAND;
D O I
10.1002/chir.22052
中图分类号
R914 [药物化学];
学科分类号
100701 ;
摘要
Epiboxidine hydrochlorides (+)-2 and (-)-2, which are the structural analogs of the antipodes of epibatidine (+/-)-1, as well as the enantiomeric pairs (+)-3/(-)-3 and (+)-4/(-)-4 were synthesized and tested for binding affinity at a4 beta 2 and a7 nicotinic acetylcholine receptor (nAChR) subtypes. Final derivatives were prepared through the condensation of racemic N-Boc-7-azabicyclo[2.2.1]heptane-2-one (+/-)-5 with the resolving agent (R)-(+)-2-methyl-2-propanesulfinamide. The pharmacological analysis carried out on the three new enantiomeric pairs evidenced an overall negligible degree of enantioselectivity at both nAChRs subtypes, a result similar to that reported for both natural and unnatural epibatidine enantiomers at the same investigated receptor subtypes. Chirality 24:5435-51, 2012. (C) 2012 Wiley Periodicals, Inc.
引用
收藏
页码:543 / 551
页数:9
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