Radical-capturing Reaction of 5,7,3', 4'-Tetramethylquercetin with the AIBN Radical Initiator

スポンサーリンク

概要

• 論文の詳細を見る

• In order to clarify the mechanism for the radicalcapturing reaction which is initiated at the C_3-hydroxyl group of flavonols, 5,7,3', 4'-tetramethylquercetin (TMQ) was reacted with the 2,2'-azobis-isobutyronitrile (AIBN) radical initiator in benzene. Six products, one depside and its two hydrolytic products, one nitrile adduct, and two others, were isolated from the reaction mixture, and their structures were determined by instrumental analyses. The quantitative change to the four main products against the reaction time was measured by an HPLC method. The radical-capturing reaction pathway for TMQ with AIBN is proposed from these products and their quantitative changes. The pathway dividing into two clearly reveals that one subpath formed the depside and its hydrolytic products, while the other formed the nitrile adduct. The reactivity of each two sub-path was nearly the same, different from the case of TMQ and the 2,2'-azobis-2,4-dimethylvaleronitrile (AMVN) radical initiator.

• 社団法人日本農芸化学会の論文
• 2000-01-23

著者

• Kawai S

  Yamaguchi Univ. School Of Medicine Ube Jpn

• Ishikawa Tomohiro

  Department Of Agricultural Chemistry School Of Agriculture Nagoya University

• Kawai S

  Tochigi Research Laboratories Kao Corporation

• Kawai Shingo

  Faculty Of Agriculture Gifu University

• ISHIKAWA Takahiro

  Faculty of Agriculture, Gifu University

• TAKAGI Michiyo

  Faculty of Agriculture, Gifu University

• KANOU Mamiko

  Faculty of Agriculture, Gifu University

• OHASHI Hideo

  Faculty of Agriculture, Gifu University

• Kawai Shinya

  Graduate School Of Engineering Tokyo University Of Agriculture And Technology

• Ishikawa T

  Fac. Of Life And Environmental Sci. Shimane Univ.

• Ohashi H

  Kirin Brewery Co. Ltd. Gunma Jpn

• Kanou Mamiko

  Faculty Of Agriculture Gifu University

• Takagi Michiyo

  Faculty Of Agriculture Gifu University

• Ohashi Hideo

  Faculty Of Agriculture Gifu University

関連論文

• Mechanical Properties of Poly(L-Lactide) Films Controlled by Blending with Polyesters of Lignin-Derived Stable Metabolic Intermediate, 2-Pyrone-4,6-Dicarboxylic Acid (PDC)
• Polyesters of 2-Pyrone-4,6-dicarboxylic Acid (PDC) as Bio-based Plastics Exhibiting Strong Adhering Properties
• Fusible, Elastic, and Biodegradable Polyesters of 2-Pyrone-4,6-Dicarboxylic Acid (PDC)
• Purification and Properties of a Galacturonic Acid-releasing Exopolygalacturonase from a Strain of Bacillus
• Generation of transgenic hybrid aspen that express a bacterial gene for feruloyl-CoA hydratase/lyase (FerB), which is involved in lignin degradation in Sphingomonas paucimobilis SYK-6
• Hyperproduction of Sebaceous cis-6-Hexadecenoic Acid by Esterase-Reduced Mutant of Rhodococcus sp. Strain(MICROBIAL PHYSIOLOGY AND BIOTECHNOLOGY)
• Detergent Alkaline Proteases : Enzymatic Properties, Genes, and Crystal Structures
• Deduced Amino Acid Sequence and Possible Catalytic Residues of a Thermostable, Alkaline Cellulase from an Alkaliphilic Bacillus Strain
• Thermostabilization by Proline Substitution in an Alkaline, Liquefying α-Amylase from Bacillus sp. Strain KSM-1378
• Amino Acid Sequence and Stereoselective Hydrolytic Reaction of an Endo-1, 4-β-glucanase from a Bacillus Strain
• Application of the Upstream Region of a Bacillus Endoglucanase Gene to High-level Expression of Foreign Genes in Bacillus subtilis
• Construction, Purification, and Properties of a Truncated Alkaline Endoglucanase from Bacillus sp. KSM-635
• Molecular Cloning and Nucleotide Sequence of the Gene for an Alkaline Protease from the Alkalophilic Bacillus sp. KSM-K16
• Alkali-Resistant, Alkaline Endo-1,4-β-glucanase Produced by Bacillus sp. PKM-5430
• Molecular Properties of 2-Pyrone-4,6-dicarboxylic Acid (PDC) as a Stable Metabolic Intermediate of Lignin Isolated by Fractional Precipitation with Na^+ Ion
• Construction of a Genetic Transformation System for a Freeze-tolerant Yeast Kluyveromyces thermotolerans
• Isolation and Sequencing of a Gene, C-ADE1, and Its Use for a Host-Vector System in Candida maltosa with Two Genetic Markers(Microbiology & Fermentation Industry)
• Quantitative Image Analysis in Brewster Angle Microscopy: Molecular Tilt of a Stearic Acid Monolayer on Water
• Lipid Accumulation in the Liver of Rats Fed a Soy Protein Isolate Diet with Excess Cystine, and its Prevention by Methionine or Choline
• Effects of Dietary Methionine, Taurine, Cystine and Glycine on Liver and Serum Lipids in Rats Fed with a Histidine-excess Diet(Food & Nutrition)
• Radical-capturing Reaction of 5,7,3', 4'-Tetramethylquercetin with the AIBN Radical Initiator
• Antioxidative activity of tree phenolic constituents I : Radical-capturing reaction of flavon-3-ols with radical initiator
• Unexpected Phase Behaviors of Poly(fumarate)s Carrying Tolane-based Mesogenic Side Chains
• Control of Phase-transition Behavior and Polymerization Capability by Methyl Addition to Dialkyl Fumarates Bearing Cyanobiphenyl Mesogens
• Tenacious Epoxy Adhesives Prepared from Lignin-derived Stable Metabolic Intermediate
• A Novel Biomass-based Polymer Prepared from Lignin-derived Stable Metabolic Intermediate by Copper(I)-catalyzed Azide-Alkyne Click Reaction
• Polyesters of 2-Pyrone-4,6-Dicarboxylic Acid (PDC) Obtained from a Metabolic Intermediate of Lignin
• Tetrahydrofolate-dependent vanillate and syringate O-demethylation links tightly to one-carbon metabolic pathway associated with amino acid synthesis and DNA methylation in the lignin metabolism of Sphingomonas paucimobilis SYK-6
• Specific degradation of β-aryl ether linkage in synthetic lignin (dehydrogenative polymerizate) by bacterial enzymes of Sphingomonas paucimobilis SYK-6 produced in recombinant Escherichia coli
• Close association between the enzymes involved in the lignin metabolic pathway of Sphingomonas paucimobilis SYK-6 : interaction of O-demethylase(LigX)and ring fission dioxygenase(LigZ)
• Characterization of the Cα-Dehydrogenase Gene Involved in the Cleavage of β-Aryl Ether by Pseudomonas paucimobilis
• Feedback Inhibition of Spinach L-Galactose Dehydrogenase by L-Ascorbate
• Crystal Structure of Chloroplastic Ascorbate Peroxidase from Tobacco Plants and Structural Insights into its Instability
• GENE REGULATION OF CHLOROPLASTIC ASCORBATE PEROXIDASE ISOZYMES BY ALTERNATIVE mRNA SPLICING OF 3'-TERMINAL EXONS IN SPINACH
• Molecular Characterization and Physiological Role of a Glyoxysome-Bound Ascorbate Peroxidase from Spinach
• THE SPINACH CHLOROPLASTIC ASCORBATE PEROXIDASE GENE PRODUCES mRNAs FOR ISOZYMES BY ALTERNATIVE SPLICING AT 3'-TERMINAL EXONS
• MOLECULAR CHARACTERIZATION AND PHYSIOLOGICAL ROLE OF A MICROBODY-BOUND ASCORBATE PEROXIDASE FROM SPINACH
• Molecular Properties and Enhancement of Thermostability by Random Mutagenesis of Glutamate Dehydrogenase from Bacillus subtilis
• 2-III-22 Intermolecular dimmer structure of Euglena ascorbate peroxidase
• Functional Characterization of D-Galacturonic Acid Reductase, a Key Enzyme of the Ascorbate Biosynthesis Pathway, from Euglena gracilis
• Two Distinct Redox Signaling Pathways for Cytosolic APX Induction under Photooxidative Stress
• Characterization of Protein Phosphatase 2A Acting on Phosphorylated Plasma Membrane Aquaporin of Tulip Petals
• Phosphorylation of Plasma Membrane Aquaporin Regulates Temperature-Dependent Opening of Tulip Petals
• Generation of Reactive Oxygen Species from Hinokitiol under Near-UV Irradiation(Analytical Chemistry)
• The Relationship Between a Leaf-rolling Moth (Dactylioglypha tonica) and Fungi Covering the Cocoon(Microbiology & Fermentation Technology)
• Response of the antioxidative system in chloroplasts of transgenic tobacco plants overexpressing thylakoid-membrane-bound ascorbate peroxidase under photooxidative stress
• An Antibiotic from Penicillium sp. Covering the Cocoon of the Leaf-rolling Moth, Dactylioglypha tonica
• Mechanism of Stereospecific Conversion of DL-5-Substituted Hydantoins to the Corresponding L-Amino Acids by Pseudomonas sp. Strain NS671
• N-Carbamyl-L-Amino Acid Amidohydrolase of Pseudomonas sp. Strain NS671: Purification and Some Properties of the Enzyme Expressed in Escherichia coli
• Specific Accumulation of Polysaccharide-Linked Hydroxycinnamoyl Esters in the Cell Walls of Irregularly Shaped and Collapsed Internode Parenchyma Cells of the Dwarf Rice Mutant Fukei 71
• EN-P35 Fluorometric assay substrate for dioxin degrading microorganisms-synthesis of dioxin-analogous fluorometric assay substrate(Section VI Environmental Biotechnology)
• EN-P29 Functional analysis of dioxin-degrading microorganism using the fluorometric substrate and chlorinated dioxin(Section VI Environmental Biotechnology)
• A Thermostable Hydantoinase of Bacillus stearothermophilus NS1122A : Cloning, Sequencing, and High Expression of the Enzyme Gene, and Some Properties of the Expressed Enzyme
• Microbial Conversion of DL-5-Substituted Hydantoins to the Corresponding L-Amino Acids by Bacillus stearothermophilus NS1122A
• Molecular Cloning and Sequencing of the Gene for a Thermostable N-Carbamyl-L-amino Acid Amidohydrolase from Bacillus stearothermophilus Strain NS1122A
• Microbial Conversion of DL-5-Substituted Hydantoins to the Corresponding L-Amino Acids by Pseudomonas sp. Strain NS671
• Hybrid aspen with a transgene for fungal manganese peroxidase is a potential contributor to phytoremediation of the environment contaminated with bisphenol A
• Immunological detection and cellular localization of the phenylalanine ammonia-lyase of a hybrid aspen
• Molecular cloning of the promoter region of the glyceraldehyde-3-phosphate dehydrogenase gene that contributes to the construction of a new transformation system in Coriolus versicolor
• Isolation and Analysis of Cinnamic Acid 4-Hydroxylase Homologous Genes from a Hybrid Aspen, Populus kitakamiensis
• REGULATION AND EXPRESSION OF PHENYLALANINE AMMONIA-LYASE FROM A WOODY PLANT
• ANALYSIS OF CINNAMIC ACID 4-HYDROXYLASE GENES FROM A WOODY PLANT(Populus kitakamiensis)
• Degradation and Solubilization of ^C-, ^C-side Chain Labeled Synthetic Lignin (Dehydrogenative Polymerizate) by Laccase III of Coriolus versicolor
• Nucleotide Sequence for the Genomic DNA Encoding an Anionic Peroxidase Gene from a Hybrid Poplar, Populus kitakamiensis
• Oxazolomycin Esters, Specific Inhibitors of Plant Transformation
• Nucleotide Sequence of the Gene for an Alkaline Endoglucanase from an Alkalophilic Bacillus and Its Expression in Escherichia coli and Bacillus subtilis
• Nucleotide Sequence of the Gene That Encodes a Neopullulanase from an Alkalophilic Bacillus
• Purification and Some Properties of an Alkaline Pullulanase from Alkalophilic Bacillus sp.KSM-1876
• Alkaline Cellulases for Laundry Detergents : Production by Alkalophilic Strains of Bacillus and Some Properties of the Crude Enzymes(Microbiology & Fermentation Industry)
• Purification and Characterization of Multiple Carboxymethyl Cellulases from Bacillus sp. KSM-522(Microbiology & Fermentation Industry)
• Alkaline Cellulase for Laundry Detergents: Production by Bacillus sp. KSM-635 and Enzymatic Properties(Microbiology & Fermentation Industry)
• Inhibitory Effect of Oxazolomycin on Crown Gall Formation(Organic Chemistry)
• Neutrophilic Bacillus Strain, KSM-522, That Produces an Alkaline Carboxymethyl cellulase(Microbiology & Fermentation Industry)
• Mosquito Cells Infected with Japanese Encephalitis Virus Release Slowly-Sedimenting Hemagglutinin Particles in Association with Intracellular Formation of Smooth Membrane Structures
• Organogels of Lignin-derived Stable Metabolic Intermediate, 2-Pyrone-4,6-dicarboxylic Acid (PDC), Bearing Cholesteryl Groups
• Research on cell division control of woody plant
• CLONING AND SEQUENCE ANALYSIS OF A cDNA ENCODING CHLOROPLASTIC ASCORBATE PEROXIDASE FROM SPINACH
• CLONING AND CHARACTERIZATION OF 1.2kbp-cDNA ENCODING SPINACH PEROXIDASE
• Characterization of Four Plasma Membrane Aquaporins in Tulip Petals : A Putative Homolog is Regulated by Phosphorylation
• Isolation and Functional Analysis of the Promoter Sequence of the Cry j 1 Gene, Which Encodes a Major Allergenic Protein in the Pollen of Japanese Cedar (Cryptomeria japonica)
• ENZYMATIC AND MOLECULAR CHARACTERIZATIONOF CATALASE IN Synechococcus PCC 7942
• CHARACTERIZATION OF ASCORBATE PEROXIDASEFROM EUGLENA GRACILIS Z
• THE MOLECULAR CHARACTERIZATION OFH_2 O_2-RESISTANCE SYSTEM OF FRUCTOSE-1,6-BISPHOSPHATASE IN Synechococcus PCC7942
• ENZYMOLOGICAL AND MOLECULARCHARACTERIZATION OF NADP-GLYCERALDEHYDE-3-PHOSPHATE DEHYDROGENASEFROM Synechococcus PCC7942
• The Contribution of Arabidopsis Homologs of L-Gulono-1,4-lactone Oxidase to the Biosynthesis of Ascorbic Acid
• Arabidopsis Chloroplastic Ascorbate Peroxidase Isoenzymes Play a Dual Role in Photoprotection and Gene Regulation under Photooxidative Stress
• Conversion of L-Galactono-1,4-lactone to L-Ascorbate Is Regulated by the Photosynthetic Electron Transport Chain in Arabidopsis
• 1-III-3 Vitamin C Biosynthesis and Translocation in Tomato (Lycopersicum esculentum) Fruits
• EFFECT OF IRON ON THE EXPRESSION OF ASCORBATE PEROXIDASE IN EUGLENA
• Overexpression of a fungal laccase gene induces nondehiscent anthers and morphological changes in flowers of transgenic tobacco
• MOLECULAR CHARACTERIZATION OF FRUCTOSE-1, 6-BISPHOSPHATASE ISOZYMES FROM Synechococcus PCC7942
• Enzymic and molecular characterization of NADP-dependent glyceraldehyde-3-phosphate dehydrogenase from Synechococcus PCC7942:resistance of the enzyme to hydrogen peroxide
• The catalase-peroxidase of Synechococcus PCC7942:purification,nucleotide sequence analysis and expression in Escherichia coli
• Subcellular Localization and Properties of L-Galactono-γ-lactone Dehydrogenase in Spinach Leaves
• Click synthesis and adhesive properties of novel biomass-based polymers from lignin-derived stable metabolic intermediate
• Liquid Crystallinity and Organogelation Behavior of Lignin-Derived Metabolic Intermediate Bearing Cholesterol Groups
• A Non-NadB Type L-Aspartate Dehydrogenase from Ralstonia eutropha Strain JMP134 : Molecular Characterization and Physiological Functions
• Expression Analysis of the VTC2 and VTC5 Genes Encoding GDP-L-Galactose Phosphorylase, an Enzyme Involved in Ascorbate Biosynthesis, in Arabidopsis thaliana
• Self-organized Structure Generated by Molecular Symmetry/Asymmetry Regulation
• Characterization of the Third Glutathione S-Transferase Gene Involved in Enantioselective Cleavage of the β-Aryl Ether by Sphingobium sp. Strain SYK-6

もっと見る 閉じる

スポンサーリンク