55579-72-1Relevant academic research and scientific papers
Construction of Multiple-Substituted Chiral Cyclohexanes through Hydrogenative Desymmetrization of 2,2,5-Trisubstituted 1,3-Cyclohexanediones
Yu, Chang-Bin,Song, Bo,Chen, Mu-Wang,Shen, Hong-Qiang,Zhou, Yong-Gui
, p. 9401 - 9404 (2019/11/28)
The construction of chiral multiple-substituted cyclohexanes motifs is a challenging topic in organic synthesis. By the combination of desymmetrization and remote stereocontrol, a ruthenium-catalyzed transfer hydrogenative desymmetrization of 2,2,5-trisubstituted 1,3-cyclohexanediones has been successfully developed for the construction of chiral multiple-substituted cyclohexanes with high enantioselectivity and diastereoselectivity. When an ester group was introduced to the two-position, a hydrogenative desymmetrization/transesterification cascade occurred, affording the bicyclic lactones bearing three stereocenters, including two discrete stereocenters and one quaternary stereogenic center, with high enantioselectivity. The products are the multiple-substituted chiral cyclohexanes bearing the hydroxyl and carbonyl functional groups, which provide a new opportunity for further precise elaboration.
COMPOUNDS AND METHODS FOR ALTERING LIFESPAN OF EUKARYOTIC ORGANISMS
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, (2011/06/19)
Provided are compounds which generally have a triketone structure. Examples of the compounds include derivatives of 1,3-cyclohexanedione, such as: 1,3-cyclohexanedione, 2-propanoyl-5-cyclohexyl-; 1,3-cyclohexanedione, 2-propanoyl-5-[4-fluorophenyl]-; 1,3-cyclohexanedione, 2-acetyl-5-[thien-2-yl]-; 1,3-cyclohexanedione, 2-acetyl-5 -butyl-; and 1,3-cyclohexanedione, 2-propanoyl-5-[bicyclo[2.2.1]hept-2-en-5-yl]-. The compounds can be used to alter the lifespan of eukaryotic organisms and treat inflammation.
SUBSTITUTED DIHYDROPYRIDINES AND METHODS OF USE
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Page/Page column 67, (2010/11/27)
Compounds are provided that are modulators of the C5a receptor. The compounds are substituted dihydropyridines and are useful in pharmaceutical compositions, methods for the treatment of diseases and disorders involving the pathologic activtation of C5a receptors.
PROCESS FOR THE PRODUCTION OF OPTICALLY ACTIVE CYCLIC ENAMINONE DERIVATIVES
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, (2008/06/13)
A process for the production of optically active cyclic enaminone derivatives characterized by aminating one of the carbonyl groups of a cyclic 1,3-diketone derivative having a symmetry plane to obtain an optically isomeric mixture of chiral cyclic enamin
