Rhodium(III)-Catalyzed Tandem C−H Olefination and Oxidative Cyclization of Aromatic Acids with Acrylates for the Synthesis of (<i>E</i>
)-3-Ylidenephthalides
作者:Wen-Jing Han、Fan Pu、Juan Fan、Zhong-Wen Liu、Xian-Ying Shi
DOI:10.1002/adsc.201700603
日期:2017.10.25
cyclization has been achieved via a rhodium (III)-catalyzed C−H activation of carboxylic acids with acrylates. This strategy provides the direct and efficient construction of biologically relevant (E)-3-ylidenephthalide scaffolds with satisfactory to good yields, and is characterized by stoichiometric reactants, exclusive stereoselectivity, commercially available substrates, mild atmospheric conditions, and
ALPHA-CINNAMIDE COMPOUNDS AND COMPOSITIONS AS HDAC8 INHIBITORS
申请人:Forma Therapeutics, Inc.
公开号:US20160264518A1
公开(公告)日:2016-09-15
The present invention relates to inhibitors of histone deacetylases, in particular HDAC8, that are useful for the treatment of cancer and other diseases and disorders, as well as the synthesis and applications of said inhibitors.
1
The present invention relates to a novel fatty acid derivative of formula (I), wherein R
1
is acyl group; R
2
is acyl(lower)alkyl; R
3
is hydrogen, aryl(lower)alkyl, etc.; R
4
is acyl(lower)alkyl; and X is —O—, —NH— or formula (II) [wherein R
5
is lower alkyl, etc.]; and a pharmaceutically acceptable salt thereof, which is useful as a medicament; the processes for the preparation of said fatty acid derivative or a salt thereof; a pharmaceutical composition comprising said fatty acid derivative or a pharmaceutically acceptable salt thereof; etc.
osmium-catalyzed dihydroxylation has uncovered that electron-deficient olefins are converted into the corresponding diols much more efficiently when the pH of the reaction medium is maintained on the acidic side. Further studies have identified citric acid as the additive of choice, for it allows preparation of very pure diols in yields generally exceeding 90%. As described here, a much wider range of olefin classes
Multicomponent, Flow Diazotization/Mizoroki-Heck Coupling Protocol: Dispelling Myths about Working with Diazonium Salts
作者:Kumara S. Nalivela、Michael Tilley、Michael A. McGuire、Michael G. Organ
DOI:10.1002/chem.201402092
日期:2014.5.26
A single pass flowdiazotization/Mizoroki–Heckprotocol has been developed for the production of cinnimoyl and styryl products. The factors that govern aryl diazonium salt stability have been examined in detail leading to the development of a MeOH/DMF co‐solvent system in which the diazoniumsalts can be generated in the presence of all other reaction components and then coupled selectively to give