Catalytic generation of alkyl radicals from aldehydes via oxidative deformylation was realized using a cobalt-salen complex with H2O2. The deformylation was thought to proceed through homolytic cleavage of peroxohemiacetal intermediates to provide even primary alkyl radicals under mild conditions. Variously substituted and functionalized hydroperoxides were obtained from corresponding aldehydes in good yield
The present invention relates to a compound represented by
wherein each symbol is as defined in the specification, a salt thereof and the like.
本发明涉及一种化合物,其表示为其中每个符号如规范中定义的那样,以及其盐等。
Zirconium-catalyzed preparation of aluminacyclopentanes and synthesis of five-membered carbo- and heterocycles
作者:Usein M Dzhemilev、Askhat G Ibragimov、Ruslan R Gilyazev、Leila O Khafizova
DOI:10.1016/j.tet.2003.10.082
日期:2004.2
Novel ‘one-pot’ catalytic methods for the synthesis of cyclopentanols, tetrahydrothiophenes, silacyclopentanes and phospholanes are based on successive transformations of olefins and organoaluminium compounds (R2AlR′) in the presence of Cp2ZrCl2 catalyst. In situ generated aluminacyclopentanes serve as common intermediates in these processes.
NOVEL CALCIUM SENSING RECEPTOR MODULATING COMPOUNDS AND PHARMACEUTICAL USE THEREOF
申请人:Nørremark Bjarne
公开号:US20120129926A1
公开(公告)日:2012-05-24
The invention relates to novel calcium-sensing receptor (CaSR) modulating trifluoromethylphenylene cyclopentylene compounds represented in formula (I) and derivatives thereof, to said compounds for use as a medicament, to said compounds for use in therapy, to pharmaceutical compositions comprising said compounds, to methods of treating diseases with said compounds, and to the use of said compounds in the manufacture of medicaments.
The present invention comprises a new class of compounds useful for the modulation of Beta-secretase enzyme activity and for the treatment of Beta-secretase mediated diseases, including Alzheimer's disease (AD) and related conditions. In one embodiment, the compounds have a general Formula I
wherein A, B, R
3
, R
4
, R
5
, i and j are defined herein. The invention also comprises pharmaceutical compositions including one or more compounds of Formula I, methods of use for these compounds, including treatment of AD and related diseases, by administering the compound(s) of Formula I, or compositions including them, to a subject. The invention also comprises further embodiments of Formulas II and III, intermediates and processes useful for the preparation of compounds of the invention.