Synthesis and SAR study of tricyclic sulfones as γ-secretase inhibitors: C-6 and C-8 positions

SAR exploration at C-6 and C-8 positions of the tricyclic sulfone series was carried out. Several functional groups were found to be well tolerated at C-6 and C-8 positions. Selective combination of C-6 and C-8 modification resulted in new tricyclic sulfone analogs with efficacy in in vivo mouse Aβ40 lowering model.

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