1,4-Oxazine β-Secretase 1 (BACE1) Inhibitors: From Hit Generation to Orally Bioavailable Brain Penetrant Leads
作者:Frederik J. R. Rombouts、Gary Tresadern、Oscar Delgado、Carolina Martínez-Lamenca、Michiel Van Gool、Aránzazu García-Molina、Sergio A. Alonso de Diego、Daniel Oehlrich、Hana Prokopcova、José Manuel Alonso、Nigel Austin、Herman Borghys、Sven Van Brandt、Michel Surkyn、Michel De Cleyn、Ann Vos、Richard Alexander、Gregor Macdonald、Dieder Moechars、Harrie Gijsen、Andrés A. Trabanco
DOI:10.1021/acs.jmedchem.5b01101
日期:2015.10.22
1,4-Oxazines are presented, which show good in vitro inhibition in enzymatic and cellular BACE1 assays. We describe lead optimization focused on reducing the amidine pK(a) while optimizing interactions in the BACE1 active site. Our strategy permitted modulation of properties such as permeation and especially P-glycoprotein efflux. This led to compounds which were orally bioavailable, centrally active, and which demonstrated robust lowering of brain and CSF A beta levels, respectively, in mouse and dog models. The amyloid lowering potential of these molecules makes them valuable leads in the search for new BACE1 inhibitors for the treatment of Alzheimer's disease.