2-Fluoro-4-pyridinylmethyl analogues of linopirdine as orally active acetylcholine release-enhancing agents with good efficacy and duration of action.
Earl RA, Zaczek R, Teleha CA, Fisher BN, Maciag CM, Marynowski ME, Logue AR, Tam SW, Tinker WJ, Huang SM, et al. J Med Chem. 1998 Nov 5; 41(23):4615-22.