core/shell quantum dots (QDs) can be used as stable and highly active photoredoxcatalysts for efficient transferhydrogenation of imines to amines with thiophenol as a hydrogen atom donor. This reaction proceeds via a proton-coupled electron transfer (PCET) from the QDs conduction band to the protonated imine followed by hydrogen atom transfer from the thiophenol to the α-aminoalkyl radical. This precious
Combinations of lipid modulating agents and substituted azetidinones and treatments for vascular conditions
申请人:Graziano P. Michael
公开号:US20050096307A1
公开(公告)日:2005-05-05
The present invention provides compositions, therapeutic combinations and methods including: (a) at least one lipid modulating agent; and (b) at least one substituted azetidinone or substituted β-lactam sterol absorption inhibitor which can be useful for treating vascular conditions, diabetes, obesity and lowering plasma levels of sterols or 5α-stanols.
Combinations of substituted azetidinones and CB1 antagonists
申请人:Veltri P. Enrico
公开号:US20060069080A1
公开(公告)日:2006-03-30
The present invention provides compositions, therapeutic combinations and methods including: (a) at least one selective CB
1
antagonist; and (b) at least one substituted azetidinone or substituted β-lactam sterol absorption inhibitor which can be useful for treating vascular conditions, diabetes, obesity, metabolic syndrome and lowering plasma levels of sterols or 5α-stanols.
PROCESSES FOR PREPARING INTERMEDIATE COMPOUNDS USEFUL FOR THE PREPARATION OF EZETIMIBE
申请人:Gavalda I Escude Ana
公开号:US20090227786A1
公开(公告)日:2009-09-10
The invention relates, in general, to an improved process for the preparation of the compounds (3R,4S)-4-(4-(benzyloxy)phenyl)-1-(4-fluorophenyl)-3-[3-(4-fluorophenyl)-3-oxopropyl]azetidin-2-one and (3R,4S)-1-(4-fluorophenyl)-3-[3-(4-fluorophenyl)-3-oxopropyl]-4-(4-hydroxyphenyl)-azetidin-2-one, which are key intermediates for the synthesis of ezetimibe, as well as the use of these intermediates for the preparation of ezetimibe.