3-(2-硝基苯基)丙酮酸及其酰胺和酯衍生物的形成是Reissert吲哚合成的关键化合物,是通过酸催化的5-(2-硝基苄基)-2,2在各种反应条件下实现的。-二甲基-1,3-恶唑烷丁-4-酮,其可容易地从3-(2-硝基苯基)环氧乙烷-2-甲酰胺获得。利用Na 2 S 2 O 4在二恶烷/水中回流,开发了一种新的高效方法,该方法通过邻硝基苯基丙酮酸及其酰胺和酯衍生物的分子内还原环化反应合成吲哚-2-羧酸衍生物。
3-(2-硝基苯基)丙酮酸及其酰胺和酯衍生物的形成是Reissert吲哚合成的关键化合物,是通过酸催化的5-(2-硝基苄基)-2,2在各种反应条件下实现的。-二甲基-1,3-恶唑烷丁-4-酮,其可容易地从3-(2-硝基苯基)环氧乙烷-2-甲酰胺获得。利用Na 2 S 2 O 4在二恶烷/水中回流,开发了一种新的高效方法,该方法通过邻硝基苯基丙酮酸及其酰胺和酯衍生物的分子内还原环化反应合成吲哚-2-羧酸衍生物。
New synthetic technology for the construction of N-hydroxyindoles and synthesis of nocathiacin I model systems
作者:K.C. Nicolaou、Anthony A. Estrada、Graeme C. Freestone、Sang Hyup Lee、Xavier Alvarez-Mico
DOI:10.1016/j.tet.2007.03.072
日期:2007.7
nucleophilic additions to in situ generated alpha,beta-unsaturated nitrones (III) through carbon-carbon and carbon-heteroatom bond formation. The new synthetic technology was applied to the synthesis of nocathiacinI (1) modelsystems (2 and 3a-c) containing the N-hydroxyindole structural motif.
Synthesis of New Highly Substituted and Hindered 1-Hydroxyindole-2-carboxylates
作者:Yeon Kyeong Park、Hyejin Kim、Sang Hyup Lee
DOI:10.1002/bkcs.10630
日期:2016.1
The synthesis of new, highlysubstituted, and hindered 1‐hydroxyindole‐2‐carboxylates 1 is described. Substrates 2, prepared through a two‐step synthetic sequence, were treated with relatively weak nucleophiles in the presence of SnCl2 · 2H2O to afford compounds 1. In particular, nucleophiles of low reactivity and/or high steric hindrance reacted efficiently to give 1 in good to modest yields.
Synthesis of New 1‐Hydroxyindole‐2‐Carboxylates and Mechanistic Studies on Reaction Pathways
作者:Yeon Kyeong Park、Sang Hyup Lee
DOI:10.1002/jhet.2796
日期:2017.5
Synthesis of new 1‐hydroxyindole‐2‐carboxylates 1 and mechanistic studies on the reactionpathways were described. The substrates 2, prepared through two‐step synthetic sequences, were treated with nucleophiles in the presence of SnCl2 · 2H2O to obtain compounds 1. In particular, the mechanistic studies led to a significant finding that reactions with thiol nucleophiles occur through a newly proposed
[EN] COMPOUNDS INHIBITORS OF ENZYME LACTATE DEHYDROGENASE (LDH) AND PHARMACEUTICAL COMPOSITIONS CONTAINING THESE COMPOUNDS<br/>[FR] COMPOSÉS INHIBITEURS D'ENZYME LACTATE DÉSHYDROGÉNASE (LDH) ET COMPOSITIONS PHARMACEUTIQUES CONTENANT CES COMPOSÉS
申请人:UNIV PISA
公开号:WO2011054525A1
公开(公告)日:2011-05-12
The present invention concerns compounds, some of which are novel, and their pharmaceutical applications. The compounds of the invention inhibit the enzyme lactate dehydrogenase (LDH) involved both in the metabolic process of hypoxic tumour cells, and in the process used by parasitic protozoa that cause malaria to obtain most of the energy they need.
Reductive cyclisation of some derivatives of methyl o-nitrophenyl-pyruvate and other keto-esters by catalysed sodium borohydride
作者:R. T. Coutts、Gita Mukherjee、R. A. Abramovitch、M. A. Brewster
DOI:10.1039/j39690002207
日期:——
ne (Va) is one of the products when the oxime of methyl o-nitrophenyl-pyruvate is reduced with sodium borohydride and palladium–charcoal. The claim that the same quinolone is one of the products of the catalytic hydrogenation of ethyl o-nitrophenylpyruvate oxime is shown to be erroneous. Reduction of the oximino-, benzylidene, and otherderivatives of selected keto-esters with sodium borohydride and