Article

Effect of linking bridge modifications on the 5-HT1A receptor activity of some 4-(omega-benzotriazol-1-yl)alkyl-1-(2-methoxy-phenyl)piperazines.

Department of Medicinal Chemistry, Institute of Pharmacology, Polish Academy of Sciences, Kraków.
Polish journal of pharmacology 50(4-5):341-7. pp.341-7
Source: PubMed

ABSTRACT A new series of arylpiperazines with two (2a-4a) and four (2c-4c) methylene spacers was synthesized. Compounds 2a, 2c, 3c, 4a and 4c were found to be 5-HT1A ligands (Ki = 4-88 nM). The most promising compound, 2c, bound with the highest affinity (Ki = 4 nM) at 5-HT1A sites. The results of in vivo experiments showed that compounds 2a-4a were inactive, while 2c-4c revealed a distinct antagonistic activity towards postsynaptic 5-HT1A receptors. The pharmacological profile of the tested compounds was discussed in comparison with that of the three methylene analogs b, described earlier.

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Keywords

arylpiperazines
 
Compounds 2a
 
compounds 2a-4a
 
distinct antagonistic activity
 
new series
 
postsynaptic 5-HT1A receptors
 
promising compound
 
tested compounds
 
three methylene analogs b