Woo Kyu Park

Synthesis and structure–activity relationship of 1H-indole-3-carboxylic acid pyridine-3-ylamides: A novel series of 5-HT2C receptor antagonists

A novel series of 1H-indole-3-carboxylic acid pyridine-3-ylamides were synthesized and identified to show high affinity and selectivity for 5-HT(2C) receptor. Among them, 1H-indole-3-carboxylic acid[6-(2-chloro-pyridin-3-yloxy)-pyridin-3-yl]-amide (15k) exhibits the highest affinity (IC(50)=0.5 nM) with an excellent selectivity (>2000 times) over other serotonin (5-HT(1A), 5-HT(2A), and 5-HT(6)) and dopamine (D(2)-D(4)) receptors.

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-HT(6) 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-HT(6) (IC(50)=8nM) receptor with good selectivity over other serotonin and dopamine receptors.

Synthesis and SAR of (piperazin-1-yl-phenyl)-arylsulfonamides: a novel series of atypical antipsychotic agents.

(Piperazin-1-yl-phenyl)-arylsulfonamides were synthesized and identified to show high affinities for both 5-HT(2C) and 5-HT(6) receptors. Among them, naphthalene-2-sulfonic acid isopropyl-[3-(4-methyl-piperazin-1-yl)-phenyl]-amide (6b) exhibits the highest affinity towards both 5-HT(2C) (IC(50)=4 nM) and 5-HT(6) receptors (IC(50)=3 nM) with good selectivity over other serotonin (5-HT(1A), 5-HT(2A), and 5-HT(7)) and dopamine (D(2)-D(4)) receptor subtypes. In 5-HT(2C) and 5-HT(6) receptor functional assays, this compound showed considerable antagonistic activity for both receptors.