This Letter details the SAR of a novel series of piperidine-derived gamma-secretase modulators. Compound 10h was found to be a potent modulator in vitro, which on further profiling, was found to decrease Abeta42, increase Abeta38 and have no effect on Abeta40 levels. Furthermore, 10h demonstrated excellent pharmacokinetic parameters in the mouse, rat and dog in addition to good CNS penetration in the mouse.
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