Acylpyruvic acids readily react with 2,3-diaminopyridine to form (Z)-3-acylmethylene-1H-3,4-dihydropyrido[2,3-b]pyrazin-2-ones. 5-Aryl-2,3-dihydrofuran-2,3-diones which can be regarded as lactones derived from gamma -enolized aroylpyruvic acids react with 2,3-diaminopyridine under mild conditions, yielding regioisomeric (Z)-2-aroylmethylene-4H+1,2-dihydropyrido[2,3-b]pyrazin-3-ones. The structure of the products and reaction chemoselectivity are discussed.
acid/ester as model ligands with a set of divalent metal ions (Mg, Mn, Ni, Co, Cu, and Zn), we obtained a series of complexes and tested them for anti-HIV-1 IN activity. Results demonstrate that the diketo acid functionality chelates divalent metal ions in solution, and complexes with metals in different stoichiometric ratios are isolated. We postulate that the diketo acids act as complexes in their active
Synthesis and SAR of 4-Aryl-2-hydroxy-4-oxobut-2-enoic Acids and Esters and 2-Amino-4-aryl-4-oxobut-2-enoic Acids and Esters: Potent Inhibitors of Kynurenine-3-hydroxylase as Potential Neuroprotective Agents
作者:Martin J. Drysdale、S. Lucy Hind、Marilyn Jansen、John F. Reinhard
DOI:10.1021/jm990396t
日期:2000.1.1
The synthesis and structure-activityrelationship of a series of 4-aryl-2-hydroxy-4-oxobut-2-enoic acids and esters and 2-amino-4-aryl-4-oxobut-2-enoic acids and esters as potent inhibitors of kynurenine-3-hydroxylase are described. These compounds are the most potent inhibitors of the kynurenine-3-hydroxylase enzyme so far disclosed. Additionally methyl 4-(3-chlorophenyl)-2-hydroxy-4-oxobut-2-enoate
A facile chemo-enzymatic process has been developed for producing stereoisomers of 4-substituted 2-hydroxy-4-butyrolactones with good to excellent enantioselectivity. This process involves an easy separation of the diastereoisomers by column chromatography and efficient enzymatic resolution by whole cells of Escherichia coli JM109 expressing Fusarium proliferatum lactonase gene. This biocatalyst shows
Design, synthesis and biological evaluation of novel aryldiketo acids with enhanced antibacterial activity against multidrug resistant bacterial strains
作者:Ilija N. Cvijetić、Tatjana Ž. Verbić、Pedro Ernesto de Resende、Paul Stapleton、Simon Gibbons、Ivan O. Juranić、Branko J. Drakulić、Mire Zloh
DOI:10.1016/j.ejmech.2017.10.045
日期:2018.1
evade known therapeutic agents used in treatment of infections. Aryldiketo acids (ADK) have shown antimicrobial activity against several resistant strains including Gram-positive Staphylococcusaureus bacteria. Our previous studies revealed that ADK analogues having bulky alkyl group in ortho position on a phenyl ring have up to ten times better activity than norfloxacin against the same strains. Rational
COMPOUNDS CAPABLE OF INHIBITING VOLTAGE GATED CALCIUM ION CHANNEL, AND PHARMACEUTICAL COMPOSITIONS COMPRISING THE SAME
申请人:KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
公开号:US20150329533A1
公开(公告)日:2015-11-19
Disclosed herein are an N-(pyrazolylmethyl)arylsulfonamide derivative useful as a calcium ion channel blocker, a pharmaceutically acceptable salt thereof, and the medicinal use thereof as a therapeutic agent using its calcium ion channel blocking effect.