[摘要]：This Letter describes the continued optimization of the MLPCN probe molecule ML071. After introducing numerous cyclic constraints and novel substitutions throughout the parent structure, we produced a number of more highly potent agonists of the M-1 mACh receptor. While many novel agonists demonstrated a promising ability to increase soluble APP alpha release, further characterization indicated they may be functioning as bitopic agonists. These results and the implications of a bitopic mode of action are presented. (C) 2012 Elsevier Ltd. All rights reserved.
