1,4-Oxazine β-Secretase 1 (BACE1) Inhibitors: From Hit Generation to Orally Bioavailable Brain Penetrant Leads
摘要:
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.
[EN] 5-(3-AMINOPHENYL)-5-ALKYL-5,6-DIHYDRO-2H-[1,4]OXAZIN-3-AMINE DERIVATIVES<br/>[FR] DÉRIVÉS DE 5-(3-AMINOPHÉNYL)-5-ALKYL-5,6-DIHYDRO-2H-[1,4]OXAZIN-3-AMINE
申请人:JANSSEN PHARMACEUTICA NV
公开号:WO2013083556A1
公开(公告)日:2013-06-13
The present invention relates to novel 5-(3-aminophenyl)-5-alkyl-5,6-dihydro- 2H-[1,4]oxazin-3-amine derivatives as inhibitors of beta-secretase, also known as beta- site amyloid cleaving enzyme, BACE, BACE 1, Asp2, or memapsin2. The invention is also directed to pharmaceutical compositions comprising such compounds, to processes for preparing such compounds and compositions, and to the use of such compounds and compositions for the prevention and treatment of disorders in which beta-secretase is involved, such as Alzheimer's disease (AD), mild cognitive impairment, senility, dementia, dementia with Lewy bodies, cerebral amyloid angiopathy, multi-infarct dementia, Down's syndrome, dementia associated with stroke, dementia associated with Parkinson's disease and dementia associated with beta-amyloid. (Formula I)