Abstract:
:Many known 5-HT7 ligands contain either a serotonin-like or an arylpiperazine structure that, in published SAR studies, are generally supposed to bind the same receptor pocket. Conversely, we explored the hypothesis that two such moieties can co-exist in the same ligand, binding to different pockets. We thus designed and synthesized a set of compounds including both a 5-hydroxyindol-3-ylethyl and a 1-arylpiperazine moieties connected by a short linker. The compounds were tested for their affinity for human 5-HT7 serotonin receptor. We further prepared a novel series of 5-HT7 ligands, where the 5-hydroxyindol-3-ylethyl moiety was bioisosterically replaced by a 3-hydroxyanilinoalkyl one. Among the newly synthesized compounds, potent ligands at the 5-HT7 receptor, behaving as antagonists in functional tests, were identified, even if they showed limited subtype selectivity. Docking studies within a model of the 5-HT7 receptor showed that the binding site can actually accommodate both moieties, with the serotonin-like one in the putative orthosteric site and the arylpiperazine one occupying an accessory pocket. The present results demonstrate that it is possible to devise and develop new 5-HT7 ligands merging two privileged structures in the same molecule.
journal_name
Eur J Med Chemjournal_title
European journal of medicinal chemistryauthors
Spadoni G,Bedini A,Bartolucci S,Pala D,Mor M,Riccioni T,Borsini F,Cabri W,Celona D,Marzi M,Tarzia G,Rivara S,Minetti Pdoi
10.1016/j.ejmech.2014.04.034subject
Has Abstractpub_date
2014-06-10 00:00:00pages
8-35eissn
0223-5234issn
1768-3254pii
S0223-5234(14)00355-9journal_volume
80pub_type
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