1-(Arylsulfonyl)-2,3-dihydro-1H-quinolin-4-one derivatives as 5-HT6 serotonin receptor ligands

Piperazinyl derivatives of 1-(arylsulfonyl)-2,3-dihydro-1H-quinolin-4-ones have been identified with high binding affinities for 5-HT6 receptor. In particular, 2-methyl-5-(N-methyl-piperazin-1-yl)-1-(naphthalene-2-sulfonyl)-2,3-dihydro-1H-quinolin-4-one (8g) exhibits high binding affinity toward 5-HT6 (IC50 = 8 nM) receptor with good selectivity over other serotonin and dopamine receptors.

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