- Design, synthesis, and structure-activity relationships of a series of 3-[2-(1-benzylpiperidin-4-yl)ethylamino]pyridazine derivatives as acetylcholinesterase inhibitors. Contreras, J.M., Parrot, I., Sippl, W., Rival, Y.M., Wermuth, C.G. J. Med. Chem. (2001)