Discovery of fused 5,6-bicyclic heterocycles as γ-secretase modulators

We herein report the discovery of four series of fused 5,6-bicyclic heterocycles as γ-secretase modulators. Synthesis and SAR of these series are discussed. These compounds represent a new class of γ-secretase modulators that demonstrate moderate to good in vitro potency in inhibiting Aβ42 production.

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