Novel substituted indole derivatives as gamma secretase modulators

摘要

The present disclosure is concerned with novel substituted indole derivatives of Formula (I) wherein R1, R2, R3, A1, A2, A3, Y and X have the meaning defined in the claims. The compounds according to the present disclosure are useful as gamma secretase modulators. The disclosure further relates to processes for preparing such novel compounds, pharmaceutical compositions comprising said compounds as an active ingredient as well as the use of said compounds as a medicament.