Synthesis and binding properties of novel selective 5-HT3 receptor ligands

Autor: Filippo Russo, Róbert Gáspár, Luisa Materia, Giuseppe Romeo, Maria N. Modica, Ferenc Fülöp, Tiziana Mennini, Alfredo Cagnotto, George Falkay
Rok vydání: 2004
Předmět:
Zdroj: Bioorganic & Medicinal Chemistry. 12:3891-3901
ISSN: 0968-0896
DOI: 10.1016/j.bmc.2004.04.043
Popis: This work reports on the synthesis and affinities for the 5-HT(3) versus the 5-HT(4) receptor of new piperazinyl-substituted thienopyrimidine derivatives 20-45 with a view to identify potent and selective ligands for the 5-HT(3) receptor. Some of the new compounds show good affinity for the 5-HT(3) receptor and, notably, do not display any affinity for the 5-HT(4) receptor. 4-(4-Methyl-1-piperazinyl)-2-methylthio-6,7-dihydro-5H-cyclopenta[4,5]thieno[2,3-d]pyrimidine 31 exhibits the highest affinity for the 5-HT(3) receptor (Ki = 33 nM) and behaves as noncompetitive antagonist.
Databáze: OpenAIRE