The glycogen phospho­rylase inhibitor 2-(3-benzyl­amino-2-oxo-1,2-di­hydro­pyridin-1-yl)-N-(3,4-di­chloro­benz­yl)acetamide

The crystal structure of a potent glycogen phospho­rylase a (GPa) inhibitor (IC₅₀ of 6.3 µM) consists of four distinct conjugated π systems separated by rotatable bonds around the Csp³ atoms. The mol­ecules are linked into dimers disposed about a crystallographic centre of symmetry through a cyclic N—H...O hydrogen-bonding motif.