straightforward access to 2-alkyl triazoles with alkylhalides as the readily available alkylation reagents, by using a well-organized nucleophilicsubstitution strategy under metal-free and solvothermal conditions has been developed. Various alkylsubstitutions on 2-site of triazoles occurred and were mainly examined in the text. Particularly, the reactionsbetween linear bisbromo alkanes and 1,2,3-triazoles
Structure-Activity Relationship Studies of Central Nervous System Agents. 13.4-[3-(Benzotriazol-1-yl)propyl]-1-(2-methoxyphenyl)piperazine, a New Putative 5-HT1A Receptor Antagonist, and Its Analogs
作者:Jerzy L. Mokrosz、Maria H. Paluchowska、Ewa Chojnacka-Wojcik、Malgorzata Filip、Sijka Charakchieva-Minol、Anna Deren-Wesolek、Maria J. Mokrosz
DOI:10.1021/jm00043a014
日期:1994.8
and their 5-HT1A and 5-HT2 affinity was determined. It was shown that the benzotriazole moiety contributes to both the 5-HT1A and 5-HT2 receptor affinity. It was demonstrated in several behavioral models that 4-[3-(benzotriazol-1- yl)propyl]-1-(2-methoxyphenyl)piperazine (11) is a new, potent presynaptic and postsynaptic5-HT1Areceptorantagonist. However, it is not selective for 5-HT1A versus alpha
Synthesis and pharmacological evaluation of aryl/heteroaryl piperazinyl alkyl benzotriazoles as ligands for some serotonin and dopamine receptor subtypes
Thirteen [(aryl/heteroaryl-piperazinyl)alkyl]benzotriazoles were prepared as potential trazodone- and buspirone-like drugs. The synthesized compounds displayed from moderate to good affinity to the serotonin 5-HT1A receptor and only modest or poor affinity to the dopamine D-2 receptor, similar to buspirone. The introduction of substituents on the benzotriazole ring did,not improve the affinity to the 5-HT1A receptor, compared to the previously described unsubstituted derivatives. In a general pharmacological screening, which concerned only three of these compounds so far (5, 7 and 13), several in vitro and in vivo activities were observed.The guinea pig ileum contractions, induced either electrically or by several agonists, were strongly inhibited; at higher concentrations also the spontaneous tone of the guinea pig trachea was reduced. Compound 13 exhibited good analgesic activity in mice in the formalin-induced algesia and in the writhing test. The same at 30 mg kg(-1) p.o. also displayed antihypertensive activity probably related to calcium channel blockade and adrenergic alpha(1) antagonism. In binding assays, 13 showed a IC50 = 580 nM for displacing [H-3]prazosin from alpha(1) receptor.Finally, compound 5 (and, to a minor extent, compound 13) protected mice against potassium cyanide induced hypoxia. (C) 2001 Elsevier Science S.A. All rights reserved.