Fluorinated piperidine acetic acids as γ-secretase modulators
2010
Abstract We report herein a novel series of difluoropiperidine acetic acids as modulators of γ-secretase. Synthesis of 2-aryl-3,3-difluoropiperidine analogs was facilitated by a unique and selective β-difluorination with Selectfluor®. Compounds 1f and 2c were selected for in vivo assessment and demonstrated selective lowering of Aβ42 in a genetically engineered mouse model of APP processing. Moreover, in a 7-day safety study, rats treated orally with compound 1f (250 mg/kg per day, AUC 0–24 = 2100 μM h) did not exhibit Notch-related effects.
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