A novel series of 8-amino-6-(arylsulphonyl)-5-nitroquinoline neuropept
ide Y1 (NPY) receptor antagonists is reported. The 8-amino and 5-nitro
groups were important for NPY1 binding affinity as changes caused lar
ge drops in potency. The 6-arylsulphonyl group was necessary; however,
substitution on the phenyl was tolerated. The 2-isopropyl analog 21 w
as a moderately potent, highly selective NPY1 receptor antagonist. Cop
yright (C) 1996 Elsevier Science Ltd