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Bioorg Med Chem Lett. 2013 Oct 1;23(19):5300-6. doi: 10.1016/j.bmcl.2013.07.071. Epub 2013 Aug 9.

Discovery of cyclic sulfoxide hydroxyethylamines as potent and selective β-site APP-cleaving enzyme 1 (BACE1) inhibitors: structure based design and in vivo reduction of amyloid β-peptides.

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Department of Global Discovery Chemistry, Institutes for BioMedical Research, Novartis Pharma AG, Basel, Switzerland.


Previous structure based optimization in our laboratories led to the identification of a novel, high-affinity cyclic sulfone hydroxyethylamine-derived inhibitor such as 1 that lowers CNS-derived Aβ following oral administration to transgenic APP51/16 mice. Herein we report SAR development in the S3 and S2' subsites of BACE1 for cyclic sulfoxide hydroxyethyl amine inhibitors, the synthetic approaches employed in this effort, and in vivo data for optimized compound such as 11d.


Alzheimer’s disease; BACE-1; Cyclic sulfoxide hydroxyethylamine inhibitors; In vivo reduction of amyloid β-peptides; Inhibitor; Structure based design

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