European Journal of Medicinal Chemistry p. 383 - 397 (2019)
Update date:2022-08-04
Topics:
?lifirski, Grzegorz
Król, Marek
Kleps, Jerzy
Podsadni, Piotr
Belka, Mariusz
B?czek, Tomasz
Siwek, Agata
Stachowicz, Katarzyna
Szewczyk, Bernadeta
Nowak, Gabriel
Bojarski, Andrzej
Kozio?, Anna E.
Tur?o, Jadwiga
Herold, Franciszek
Extended studies in the 4-aryl-pyrido[1,2-c]pyrimidine group resulted in 27 new compounds (10.1-10.27), 5,6,7,8-tetrahydropyrido[1,2-c]pyrimidine derivatives. In vitro tests (RBA) were carried out for 10.1-10.27 compounds in order to determine their affinity to 5-HT1A receptor and SERT protein. 10.1-10.3, 10.6, 10.7, 10.16 and 10.27 compounds had high binding ability to both molecular targets (5-HT1A Ki = 8–87 nM; SERT Ki = 8–52 nM). For these compounds (10.1-10.3, 10.6, 10.7, 10.16, 10.27) further in vitro, in vivo and metabolic stability tests were performed. In vitro studies in the extended receptor profile (D2, 5-HT2A, 5-HT6 and 5-HT7) showed their selectivity towards 5-HT1A receptor and SERT protein. In vivo tests revealed that compounds 10.7 and 10.16 had the properties of presynaptic antagonists of the 5-HT1A receptor. The redesign of the 2H-pyrido[1,2-c]pyrimidine residue present in the terminal part towards 5,6,7,8-tetrahydropyrido[1,2-c]pyrimidine resulted in the improved metabolic stability and enhanced affinity to both molecular targets (5-HT1A-R and SERT) compared to the precursors.
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