Abstract
5-HT6 Receptors are relatively recently discovered receptors that interact with cholinergic, glutamatergic, GABAergic and dopaminergic transmission systems. These receptors have been implicated in the CNS system as therapeutic targets in applications such as psychosis, reduction of body weight or Alzheimer's disease. As part of our efforts to develop 5-HT6 antagonists, we explored the benzothiazolone scaffold substituted in position 3 or 6 respectively with ethylamino chains and an aromatic ring connected through a sulfonyl linker. Final compounds were evaluated in radioligand binding assays for their ability to interact with 5-HT6 receptors. Their potential cytotoxic effects were determined on the human neuroblastoma cell line SY5Y. They showed very low cytotoxicity, and one of them has submicromolar affinity for 5-HT6 receptors.
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