Title: Dineen TA,et al. Inhibitors of β-site amyloid precursor protein cleaving enzyme (BACE1): identification of (S)-7-(2-fluoropyridin-3-yl)-3-((3-methyloxetan-3-yl)ethynyl)-5'H-spiro[chromeno,3-bpyridine-5,4'-oxazol-2'-amine (AMG-8718). J Med Chem. 2014 Dec 11;57(23):9811-31.