Structural Optimization and Biological Evaluation of 2-Substituted 5-Hydroxyindole-3-carboxylates as Potent Inhibitors of Human 5-Lipoxygenase
摘要:
Pharmacological suppression of leukotriene biosynthesis by inhibitors of 5-lipoxygenase (5-LO) is a strategy to intervene with inflammatory and allergic disorders. We recently presented 2-amino-5-hydroxy-1H-indoles as efficient 5-LO inhibitors in cell-based and cell-free assays. Structural optimization led to novel benzo[g]indole-3-carboxylates exemplified by ethyl 2-(3-chlorobenzyl)-5-hydroxy-1H-benzo[g]indole-3-carboxylate (compound 11a), which inhibits 5-LO activity in human neutrophils and recombinant human 5-LO with IC50 values of 0.23 and 0.086 mu M, respectively. Notably, 11a efficiently blocks 5-LO product formation in human whole blood assays (IC50 = 0.83-1.6 mu M) and significantly prevented leukotriene B-4 production in pleural exudates of carrageenan-treated rats, associated with reduced severity of pleurisy. Together, on the basis of their high potency against 5-LO and the marked efficacy in biological systems, these novel and straightforward benzo[g]indole-3-carboxylates may have potential as anti-inflammatory therapeutics.
DNA−Protein Cross-Linking: Model Systems for Pyrimidine−Aromatic Amino Acid Cross-Linking
摘要:
We have synthesized simple model systems to explore the possibility of photo-cross-linking between the pyrimidine bases and the side chains of the aromatic amino acids. Thymine/phenylalanine and thymine/tyrosine models gave cross-links, and thymine/tryptophan models gave complex mixtures; the cytosine/phenylalanine model was unreactive. The quantum yields for the model cross-linking reactions were 18-46 times smaller than those for thymine dimer formation. Biphotonic excitation contributes little to the yield of these reactions.
[EN] COMPOUNDS AND USE THEREOF IN THE EXPANSION OF HEMATOPOIETIC STEM CELLS AND/OR HEMATOPOIETIC PROGENITOR CELLS<br/>[FR] COMPOSÉS ET LEUR UTILISATION DANS L'EXPANSION DE CELLULES SOUCHES HÉMATOPOÏÉTIQUES ET/OU CELLULES PROGÉNITRICES HÉMATOPOÏÉTIQUES
申请人:UNIV MONTREAL
公开号:WO2015161373A1
公开(公告)日:2015-10-29
Compounds of general formula or salts or prodrugs thereof, are provided and described herein. The compounds are useful to expand hematopoietic stem cell and/or hematopoietic progenitor cell populations. Particularly, the hematopoietic cells are human cells. The compounds are also useful in the medical treatment of hematopoietic disorder/malignancy, an autoimmune disease and/or an inherited immune-deficient disease in a subject.
Triaryl-Substituted Divinyl Ketones Cyclization: Nazarov Reaction versus Friedel–Crafts Electrophilic Substitution
作者:Valerii Z. Shirinian、Andrey G. Lvov、Anton V. Yadykov、Liana V. Yaminova、Vadim V. Kachala、Ashot I. Markosyan
DOI:10.1021/acs.orglett.6b03023
日期:2016.12.16
triaryl-substituted divinyl ketones has been studied. It was found that the reaction pathway strongly depends on the nature of the aryl substituent at the α-position to the carbonyl group. An electron-rich aromatic substituent promotes the reaction to proceed through the intramolecular Friedel–Crafts electrophilicsubstitution giving dihydronaphthalene derivatives. In contrast, the presence of an electron-deficient
Cyclization of Polarized Divinyl Ketones under Aqueous and Ambient Conditions
作者:Anton V. Yadykov、Liana V. Yaminova、Mikhail M. Krayushkin、Valerii Z. Shirinian
DOI:10.1002/adsc.202000956
日期:2021.1.5
applicability on a gram‐scale. It was shown that the amphiphilicity of the substrate and a low energy barrier of the reaction are a prerequisite for electrophilic and concerted reactions underaqueous and ambient conditions.
Acylation of Meldrum’s acid with arylacetic acid imidazolides as a convenient method for the synthesis of 4-aryl-3-oxobutanoates
作者:A. A. Shimkin、V. Z. Shirinian、A. K. Mailian、D. V. Lonshakov、V. V. Gorokhov、M. M. Krayushkin
DOI:10.1007/s11172-011-0019-9
日期:2011.1
C-Acylation of Meldrum’s acid by (het)arylacetic acids in ethanol in the presence of 1,1′-carbonyldiimidazole leads to ethyl 4-(het)aryl-3-oxobutanoates in high yields.
[DE] VERWENDUNG VON INDOL-3-CARBONSÄUREESTERN ZUR HEMMUNG DER MIKROSOMALEN PROSTAGLANDIN E2 SYNTHASE<br/>[EN] USE OF INDOLE-3-CARBOXYLIC ESTERS FOR INHIBITING MICROSOMAL PROSTAGLANDIN E2 SYNTHASE<br/>[FR] UTILISATION D'ESTERS DE L'ACIDE INDOL-3-CARBOXYLIQUE POUR L'INHIBITION DE LA PROSTAGLANDINE E2 SYNTHASE MICROSOMALE
申请人:UNIV TUEBINGEN
公开号:WO2009146696A1
公开(公告)日:2009-12-10
Die vorliegende Erfindung betrifft die Verwendung von lndol-3-carbonsäureestern und seiner Derivate zur Hemmung der induzierbaren mikrosomalen Prostaglandin E2 Synthase-1 und/oder zur Hemmung der 5-Lipoxygenase. Insbesondere betrifft die Erfindung die Verwendung von Derivaten des 3-Carboxy-aryl[g]indols, vor allem von 2-Aryl- und 2-Arylalkyl-Aryl[g]indol-3-carbonsäureestern sowie deren strukturellen Abkömmlingen zur Hemmung der induzierbaren mikrosomalen Prostaglandin E2 Synthase-1 und / oder zur Hemmung der 5-Lipoxygenase. Ferner betrifft die Erfindung die Verwendung von lndol-3-carbonsäureestern zur Herstellung eines Arzneimittels zur Behandlung von PGE2- und / oder 5-LO-vermittelter Erkrankungen und krankhafter Zustände, insbesondere von entzündlichen chronischen Entzündungen wie rheumatoide Arthritis, Osteoarthritis, Erkrankungen des kardiovaskulären Systems, Asthma, allergische Rhinitis, Multiple Sklerose, entzündliche Hauterkrankungen, Osteoporose und Krebs, Schmerz und Fieber, bei denen PGE2 und / oder 5-LO Produkte eine Rolle spielen.