Improved preparation and structural investigation of 4-aryl-4-oxo-2-hydroxy-2-butenoic acids and methyl esters
摘要:
A simple and efficient oxalylation of aryl methyl ketones was accomplished with dimethyl oxalate in the presence of sodium methoxide. The unpreviously reported sodium ketoenolate esters were isolated and gently hydrolyzed into the ketoenol esters in good yields. Alternatively the sodium ketoenolate esters hydrolysis could also be conducted to directly afford the ketoenol acids, which represent one of the most promising class of HIV-1 integrase inhibitors. Advantages over previously reported procedures were better yields and simplicity of the purification protocol. (C) 2004 Elsevier Ltd. All rights reserved.
Novel dimeric aryldiketo containing inhibitors of HIV-1 integrase: Effects of the phenyl substituent and the linker orientation
作者:Li-Fan Zeng、Xiao-Hua Jiang、Tino Sanchez、Hu-Shan Zhang、Raveendra Dayam、Nouri Neamati、Ya-Qiu Long
DOI:10.1016/j.bmc.2008.07.008
日期:2008.8
a further structure-activity relationship (SAR) study with respect to the substituent effect of the ADK and the dimerization with conformationally constrained linkers such as piperazine, 4-amino-piperidine, piperidin-4-ol, and trans-cyclohexan-1,4-diamine. The substituents on the phenyl ring as well as the spatial orientation of the two diketo units were observed to play important roles in the IN inhibitory
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
Asymmetric Organocatalytic Cascade Michael/Hemiketalization/Retro-Aldol Reaction of 2-[(<i>E</i>)-2-Nitrovinyl]phenols with 2,4-Dioxo-4-arylbutanoates: A Convenient Access to Chiral α-Keto Esters
unprecedented organocatalyticenantioselective cascade Michael/hemiketalization/retro‐aldol reaction of 2‐[(E)‐2‐nitrovinyl]phenols and 2,4‐dioxo‐4‐arylbutanoates is described. With a bifunctional squaramide catalyst incorporating (1R,2R)‐1,2‐diphenylethane‐1,2‐diamine, the reactions afford products in 75–99% yields with 80–98% ee. This process provides an enantioselective pathway for the synthesis of chiral
Synthesis and Analgesic Activity of Etyl 4-[(4-Aryl-2-hydroxy-4-oxobut-2-enoyl)amino]benzoates
作者:V. L. Gein、A. V. Romanova、O. V. Bobrovskaya、O. V. Nazarets、R. R. Makhmudov、Е. V. Gradova
DOI:10.1134/s1070363222110056
日期:2022.11
4-aminobenzoic acid ethyl ester (benzocaine, anesthesin) in glacial acetic acid in the presence of anhydrous sodium acetate gave rise to ethyl (Z)-4-(4-aryl-2-hydroxy-4-oxobut-2-enamido)benzoates. Analgesicactivity of the synthesized compounds was studied.
摘要 4-芳基-2-羟基-4-氧代丁-2-烯酸甲酯(芳酰基丙酮酸)与 4-氨基苯甲酸乙酯(苯佐卡因,麻醉剂)在无水乙酸钠存在下在冰醋酸中反应得到上升为 ( Z )-4-(4-aryl-2-hydroxy-4-oxobut-2-enamido) 苯甲酸乙酯。研究了合成化合物的镇痛活性。
Enantioselective [3 + 3] Annulation–Deoxalation Strategy for Rapid Access to δ-Oxoesters via N-Heterocyclic Carbene Catalysis
unprecedented stereoselective synthetic approach to δ-oxoesters derivatives from readily available starting materials has been developed. This method, catalyzed by N-heterocyclic carbene, involves an annulation–deoxalation reaction of alkynyl aldehydes with 2,4-diketoesters and proceeds via the chiral α,β-unsaturated acylazolium intermediates. The annulation includes the in situ formation of dihydropyranones