Hydroxymethylations of Aryl Halides by Pd-Catalyzed Cross-Couplings with (Benzoyloxy)methylzinc Iodide - Scope and Limitations of the Reaction
作者:Michal Hocek、Zbyněk Hasník、Peter Šilhár
DOI:10.1055/s-2008-1032084
日期:——
Palladium-catalyzed cross-coupling reactions of (benzoyloxymethyl)zinc iodide with diverse (het)aryl halides leading to (benzoyloxymethyl)(het)arenes were studied to define the scope of this reaction. It has been found that this reaction is only applicable for electron-deficient aryl halides and the most efficient it is for 2-halopyridines and 4-halopyrimidines. Deprotection of the intermediates gives
The present invention relates to PDE4 inhibitor (R)-4-(5-(4-methoxy-3-propoxyphenyl)pyridin-3-yl)-1,2-oxaborolan-2-ol including the crystalline monohydrate thereof.
Piperazinyl pyrimidine derivatives as potent γ-secretase modulators
作者:Alexey Rivkin、Sean P. Ahearn、Stephanie M. Chichetti、Yoona R. Kim、Chaomin Li、Andrew Rosenau、Sam D. Kattar、Joon Jung、Sanjiv Shah、Bethany L. Hughes、Jamie L. Crispino、Richard E. Middleton、Alexander A. Szewczak、Benito Munoz、Mark S. Shearman
DOI:10.1016/j.bmcl.2009.11.101
日期:2010.2
The development of a novel series of piperazinyl pyrimidines as gamma-secretase modulators for potential use in the treatment of Alzheimer's disease is disclosed herein. Optimization of a screening hit provided a series of potent gamma-secretase modulators with > 180-fold in vitro selectivity over inhibition of Notch cleavage. (C) 2009 Elsevier Ltd. All rights reserved.