Heterobicyclic pyrazole compounds and methods of use
申请人:Blake F. James
公开号:US20070238726A1
公开(公告)日:2007-10-11
Compounds of Formulas Ia and Ib, and stereoisomers, geometric isomers, tautomers, solvates, metabolites and pharmaceutically acceptable salts thereof, are useful for inhibiting receptor tyrosine kinases and for treating disorders mediated thereby. Methods of using compounds of Formula Ia and Ib, and stereoisomers, geometric isomers, tautomers, solvates and pharmaceutically acceptable salts thereof, for in vitro, in situ, and in vivo diagnosis, prevention or treatment of such disorders in mammalian cells, or associated pathological conditions are disclosed.
Sc(OTf)<sub>3</sub>-Catalyzed Conjugate Allylation of Alkylidene Meldrum’s Acids
作者:Aaron M. Dumas、Eric Fillion
DOI:10.1021/ol9003959
日期:2009.5.7
Alkylidene Meldrum’s acids are allylated in a conjugate fashion by allyltin nucleophiles under mild Sc(OTf)3-catalyzed conditions. The addition is functional group tolerant and reactions with nonracemic alkylidenes are highlydiastereoselective. Allylation of alkylidenes derived from α-ketoesters yield all-carbon quaternary stereocenters.
A novel Michael reaction of silyl enol ethers via hetero Diels-Alder reaction with alkylidene-Meldrum's acid
作者:Shigeo Mizukami、Nobuhiro Kihara、Takeshi Endo
DOI:10.1016/s0040-4039(00)60146-6
日期:1993.11
Alkylidene Meldrum's acid easily reacted with silylenolethers without any catalyst to afford hetero Diels-Alder adducts which could be quantitatively hydrolysed to obtain Michael adducts in good yields. The Michael adducts could be obtained diastereoselectively and could be converted to corresponding δ-ketoesters quantitatively.
Asymmetric Addition of Alkenylstannanes to Alkylidene Meldrum’s Acids
作者:Stuart J. Mahoney、Aaron M. Dumas、Eric Fillion
DOI:10.1021/ol902216y
日期:2009.11.19
Herein, we describe enantioselective addition of alkenyltin reagents possessing a reactive and sensitive allylic functionality not readilyavailable to other classes of alkenyl metals. This method is enabled by the use of highlyelectrophilic alkylidene Meldrum’s acids as acceptors and a cationic Rh(I)−diene complex as catalyst.
Meldrum's Acids as Acylating Agents in the Catalytic Intramolecular Friedel−Crafts Reaction
作者:Eric Fillion、Dan Fishlock、Ashraf Wilsily、Julie M. Goll
DOI:10.1021/jo0483724
日期:2005.2.1
dialkyl thioether, aryl methyl ether, aryl TIPS and TBDPS ethers, nitrile- and nitro-substituted aryls, alkyl and aryl halides) for a variety of 5-benzyl (enolizable Meldrum's acids) and 5-benzyl-5-substituted Meldrum's acids (quaternized Meldrum's acids), forming 1-indanones and 2-substituted-1-indanones, respectively, are delineated. This method was further applied to the synthesis of 1-tetralones,