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Updated: Jul 11, 2026

Quantitative Measurement of γ-Secretase-mediated Amyloid Precursor Protein and Notch Cleavage in Cell-based Luciferase Reporter Assay Platforms
Published on: January 25, 2018
Novel orally active, dibenzazepinone-based gamma-secretase inhibitors
Jens-Uwe Peters1, Guido Galley, Helmut Jacobsen
1Pharma Division, Discovery Chemistry, F. Hoffmann-La Roche Ltd, CH-4070 Basel, Switzerland. jens-uwe.peters@roche.com
Abstract:
Structural modifications of the gamma-secretase inhibitor, LY411575, led to a malonamide analogue (S),(S)-1 with potent inhibitory activity in vitro, but disappointing activity in a mouse model of Alzheimer's disease. Identification and replacement of a metabolically labile position provided an improved compound (R/S),(S)-13 with high in vitro activity (IC(50)=1.7 nM), and in vivo activity after oral administration (MED=3 mg/kg). Further modifications gave an equipotent carbamate analogue 14 with improved molecular properties.
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