作者:Barry M. Trost、James P. Stambuli、Steven M. Silverman、Ulrike Schwörer
DOI:10.1021/ja0640750
日期:2006.10.1
Transition-metal-catalyzed trimethylenemethane (TMM) [3 + 2] cycloadditions provide direct routes to functionalized cyclopentanes. This reaction has been shown to be a highly chemo-, regio-, and diastereoselective process. We report a palladium-catalyzedasymmetric [3 + 2] trimethylenemethane (TMM) cycloaddition between 3-acetoxy-2-trimethylsilylmethyl-1-propene and various di- and trisubstituted olefins
Spiropiperidine beta-secretase inhibitors for the treatment of Alzheimer's disease
申请人:Coburn A. Craig
公开号:US20070021454A1
公开(公告)日:2007-01-25
The present invention is directed to spiropiperidine compounds of formula (I)
and tautomers thereof, which are inhibitors of the beta-secretase enzyme and that are useful in the treatment of diseases in which the beta-secretase enzyme is involved, such as Alzheimer's disease. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the treatment of such diseases in which the beta-secretase enzyme is involved.