Provided is a novel therapeutic means for Alzheimer's disease. In particular, provided is a compound represented by the following general formula (I):
[wherein Ar1 represents 2-methoxy-4-(2-pyridylmethoxy)phenyl etc. and Ar2 represents a 1H-indol-6-yl group etc.] or a salt thereof.
Kuroda; Koyama, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1943, vol. 63, p. 387,389
作者:Kuroda、Koyama
DOI:——
日期:——
Evaluation of 2-(piperidine-1-yl)-ethyl (PIP) as a protecting group for phenols: Stability to ortho-lithiation conditions and boiling concentrated hydrobromic acid, orthogonality with most common protecting group classes, and deprotection via Cope elimination or by mild Lewis acids
作者:Rolf Norén
DOI:10.1016/j.tet.2021.132108
日期:2021.5
A new protectinggroup, 2-(piperidine-1-yl)-ethyl (PIP), was evaluated as a protectinggroup for phenols. The PIP group was stable to ortho-lithiation conditions and refluxing with concentrated hydrobromic acid. Deprotection was accomplished by two routes, oxidation to N-oxides followed by Cope elimination (CE) and subsequent hydrolysis or ozonolysis of the vinyl ether or one-step deprotection by BBr3•Me2S