Thiazoles and thiopyridines: novel series of high affinity h5HT(7) ligands.

A series of thiazole based 5HT(7) ligands has been identified from screening. Optimisation of the pendent aryl group and modification of the core gave a related series of high affinity, selective thiopyridine based 5HT(7) ligands, the most active of which behaves as a partial agonist.