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
相关论文
共 33 条
[1]   Mammalian Nicotinic Acetylcholine Receptors: From Structure to Function [J].
Albuquerque, Edson X. ;
Pereira, Edna F. R. ;
Alkondon, Manickavasagom ;
Rogers, Scott W. .
PHYSIOLOGICAL REVIEWS, 2009, 89 (01) :73-120
[2]   Synthesis and nicotinic activity of epiboxidine: An isoxazole analogue of epibatidine [J].
Badio, B ;
Garraffo, HM ;
Plummer, CV ;
Padgett, WL ;
Daly, JW .
EUROPEAN JOURNAL OF PHARMACOLOGY, 1997, 321 (02) :189-194
[3]  
Badio B., 1994, Med. Chem. Res, V4, P440
[4]  
BROKA CA, 1994, MED CHEM RES, V4, P449
[5]   Epibatidine structure-activity relationships [J].
Carroll, FI .
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS, 2004, 14 (08) :1889-1896
[6]   Synthesis, nicotinic acetylcholine receptor binding, and antinociceptive properties of 2-exo-2-(2′-substituted 5′-pyridinyl)-7-azabicyclo[2.2.1]heptanes.: Epibatidine analogues [J].
Carroll, FI ;
Liang, F ;
Navarro, HA ;
Brieaddy, LE ;
Abraham, P ;
Damaj, MI ;
Martin, BR .
JOURNAL OF MEDICINAL CHEMISTRY, 2001, 44 (13) :2229-2237
[7]   An easy route to optically active 1-substituted-1-pyridyl-methylamines by diastereoselective reduction of enantiopure N-tert-butanesulfinyl ketimines [J].
Chelucci, Giorgio ;
Baldino, Salvatore ;
Chessa, Simona ;
Pinna, Gerard A. ;
Soccolini, Franco .
TETRAHEDRON-ASYMMETRY, 2006, 17 (22) :3163-3169
[8]   Intramolecular photocycloaddition of unsaturated isoquinuclidines.: Synthesis of 2-azatetracyclo[4.0.0.4,907,10]decanes and 3-azatetracyclo[6.1.1.0.2,705,9]decanes [J].
Choi, YG ;
White, JD .
JOURNAL OF ORGANIC CHEMISTRY, 2004, 69 (11) :3758-3764
[9]  
Cincotta SL, 2008, CURR OPIN INVEST DR, V9, P47
[10]   Synthesis of epibatidine isomers:: endo-5-and 6-(6′-chloro-3′-pyridyl-2-azabicyclo[2.2.1]heptanes [J].
Cox, CD ;
Malpass, JR ;
Gordon, J ;
Rosen, A .
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1, 2001, Royal Society of Chemistry (19) :2372-2379