Results 171 to 180 of about 11,687 (213)

Synthesis of 14C-coniferyl alcohol (4-hydroxy-3-methoxycinnamyl alcohol)

Journal of Labelled Compounds and Radiopharmaceuticals, 1978
Coniferyl alcohol-β-14C or -γ-14C (IVa or IVb) was prepared by the reduction of methyl 4-acetylferulate-β-14C or γ-14C (IIIa or IIIb) with Vitride-T reagent [70% (w/v) solution of sodium bis(2-methoxyethoxy) aluminium hydride in benzene]. Several synthetic methods were compared in the preparation of 4-acetylferulic acid β-14C or γ-14C (IIa or IIb). The
H. M. Balba, Gerald G. Still
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Electrophoretic analysis of coniferyl alcohol oxidase and related laccases

ELECTROPHORESIS, 1994
AbstractGradient gel electrophoretic methods enabled a distinction to be made between coniferyl alcohol oxidase (CAO) of lignifying cell walls and a pI ∼ 9 pine “laccase” recently implicated in lignification (Science 1993 260, 672). Following treatment of a partially purified protein mixture from developing xylem of Pinus strobus with 2‐[N‐morpholine ...
P, Udagama-Randeniya, R, Savidge
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Mechanism of oxidative coupling of coniferyl alcohol

Phytochemistry, 1994
Abstract The dimerization mechanism of coniferyl alcohol in aqueous and non-aqueous media has been investigated by electrochemistry and by radiolysis. The coniferyl radical has been observed and shown to dimerize by a radical-radical coupling.
Philippe Hapiot, Jean Pinson, Pedatsur Neta, Charlette Francesch, Farida Mhamdi, Christian Rolando, Serge Schneider   +6 more
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Highly Selective Syntheses of Coniferyl and Sinapyl Alcohols

Journal of Agricultural and Food Chemistry, 1998
(E)-Isomers of coniferyl and sinapyl alcohols were readily and cleanly prepared in excellent yields from commercially available coniferaldehyde and sinapaldehyde by sodium triacetoxyborohydride reduction in ethyl acetate. No 1,4-reduction products, always produced in prior methods, could be detected.
Fachuang Lu, John Ralph
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Coniferyl and sinapyl alcohol derivatives from Ligularia duciformis

Phytochemistry, 1998
Abstract Investigation of Ligularia duciformis roots afforded four novel coniferyl alcohol derivatives and two new sinapyl alcohol derivatives: 4- O -[6-hydroxy-7(9)-dehydro-6,7-dihydrogeranyl]-coniferyl alcohol, 4- O -[7-hydroxy-5,6 E -dehydro-6,7-dihydrogeranyl]-coniferyl alcohol, 4- O -[6-hydroperoxy-7(9)-dehydro-6,7-dihydrogeranyl]-coniferyl ...
null Kun Gao, null Wen-Shu Wang, null Zhong-Jian Jia   +2 more
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What Factors Control Dimerization of Coniferyl Alcohol?

Holzforschung, 1999
Summary Data suggest that the dimerization of coniferyl alcohol is not under thermodynamic control. In this study, molecular dynamics calculations were used to estimate the effect of the solvent environment. In water, the coniferyl alcohol radicals were forced to associate by the formation of a solvent cage.
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Study of Photochemical Reactions of Coniferyl Alcohol. II. Comparative Structural Study of a Photochemical and Enzymatic Polymer of Coniferyl Alcohol

Photochemistry and Photobiology, 1998
AbstractThe structure of the polymer synthesized by UV irradiation of coniferyl alcohol was studied, using UV‐visible, Raman, IR, H‐NMR and 13C‐NMR spectroscopy. The photochemical polymer was compared with the structure of the polymer obtained by peroxidase‐catalyzed polymerization of coniferyl alcohol.
Ksenija Radotic, Smilja Todorovic, Joanna Zakrzewska, Milorad Jeremic   +3 more
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Pyrolysis–GC/MS of sinapyl and coniferyl alcohol

Journal of Analytical and Applied Pyrolysis, 2013
Abstract Herein we report the fast pyrolysis of the lignin monomers sinapyl and coniferyl alcohol, as well as mixtures of the two, at 650 °C using pyrolysis–GC/MS. The total ion chromatogram area % of certain marker pyrolysates for each alcohol were summed and used to calculate sinapyl:guaiacyl (S:G) ratios in the mixtures; these ratios were then ...
Anne E. Harman-Ware, Mark Crocker, Aman Preet Kaur, Mark S. Meier, Dawn Kato, Bert Lynn   +5 more
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Enzymatic Polymerization of Coniferyl Alcohol in the Presence of Cyclodextrins

Biomacromolecules, 2006
The dehydrogenative polymerization of coniferyl alcohol by horseradish peroxidase was performed in 0.10 M phosphate buffer at 27 degrees C. Dehydrogenative polymer (DHP) from coniferyl alcohol was characterized by size exclusion chromatography (SEC) and nuclear magnetic resonance (NMR) spectroscopy. The ratio of 8-O-4':8-5':8-8' linkages was determined
Rikiya, Nakamura, Yasuyuki, Matsushita, Kazuhiko, Umemoto, Arimitsu, Usuki, Kazuhiko, Fukushima   +4 more
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Coniferyl Alcohol, a Lignin Precursor, Stimulates Rhizobium rhizogenes A4 Virulence

Current Microbiology, 2005
Rhizobium rhizogenes, a soil bacterium, is the causative agent of the neoplastic disease hairy root. Upon incubation of Rhizobium rhizogenes A4 with coniferyl alcohol, a lignin precursor, bacterial virulence on cotton cotyledon slices was stimulated. This was observed both in numbers of root hairs produced and in their length. Stimulation was maximized
Yedidya, Gafni, Yael, Levy
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