Abstract:
:The work describes a discovery of new chemical family of potent ligands for the 5-HT6 serotonin receptors. During the search for new histamine H4 receptor antagonists among 1,3,5-triazine derivatives, compound 2 (4-benzyl-6-(4-methylpiperazin-1-yl)-1,3,5-triazin-2-amine) was found. Compound 2, weakly active for the H4 receptor but fitted in 3/4 of pharmacophore features of the 5-HT6R ligand, occurred to be a moderate 5-HT6R agent, useful as a lead structure for further modifications. A series of new derivatives (3-19) of the lead 2 was synthesized, evaluated in the radioligand binding assay (RBA) and explored in comprehensive molecular modelling, including both pharmacophore- and structure-based approaches with docking to the homology model of 5-HT6R. The most active compounds displayed a potent affinity for the 5-HT6R in the nanomolar range (Ki = 20-30 nM), some of them (4, 11 and 19) were tested in the rat forced swim test that revealed their antidepressant-like effect. SAR-analysis on the basis of both, RBA and docking results, indicated that action on the receptor is related to the hydrophobicity and the size of aromatic moiety substituted by a methylene linker at the position 4 of 1,3,5-triazine.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Łażewska D,Kurczab R,Więcek M,Kamińska K,Satała G,Jastrzębska-Więsek M,Partyka A,Bojarski AJ,Wesołowska A,Kieć-Kononowicz K,Handzlik Jdoi
10.1016/j.ejmech.2017.04.033subject
Has Abstractpub_date
2017-07-28 00:00:00pages
117-124eissn
0223-5234issn
1768-3254pii
S0223-5234(17)30290-8journal_volume
135pub_type
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