Results 211 to 220 of about 24,247 (252)
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Biosynthetic relationship of aryltetralin lactone lignans to dibenzylbutyrolactone lignans
Phytochemistry, 1986Abstract Feeding experiments in Podophyllum hexandrum plants have shown that the dibenzylbutyrolactone lignan yatein is a satisfactory precursor of the aryltetralin lignan podophyllotoxin. The corresponding cis isomer of yatein was also incorporated, but to a lesser extent, and probably via yatein.
Widad M. Kamil, Paul M. Dewick
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Critical Reviews in Clinical Laboratory Sciences, 2007
This review focuses on the possible role in human health of the consumption of lignan-rich foods. Most of the plant lignans in human foods are converted by the intestinal microflora in the upper part of the large bowel to enterolactone and enterodiol, called mammalian or enterolignans.
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This review focuses on the possible role in human health of the consumption of lignan-rich foods. Most of the plant lignans in human foods are converted by the intestinal microflora in the upper part of the large bowel to enterolactone and enterodiol, called mammalian or enterolignans.
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Cytotoxic lignans from Podophyllum, and the nomenclature of aryltetralin lignans
Phytochemistry, 1981Abstract Roots of Podophyllum hexandrum and P. peltatum both contain (1 R ,2 R ,3 R )-desoxypodophyllotoxin [(1α,2α,3β)- desoxypodophyllotoxin] and the previously unreported (1 R ,2 R ,3 R )-podophyllotoxone [(1α,2α,3α)-podophyllotoxone]. Thermal isomerization of (loc,2ct,3fl)-podophyllotoxone readily occurs to yield (1α,2α,3α)-podophyllotoxone ...
Paul M. Dewick, David E. Jackson
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A lignan and a lignan derivative from the fruit of Forsythia suspensa
Phytochemistry Letters, 2019Abstract The chemical investigation of a 95% ethanol extract of the fruit of Forsythia suspensa resulted in the isolation of one new lignan and one new lignan derivative, forsythialan E-F, along with two known lignans. Their structures were established based on extensive spectroscopic data analyses, including UV, IR, HRESIMS, 1D NMR and 2D NMR ...
Chang Li +8 more
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An Update on Bioactive Plant Lignans
ChemInform, 2005AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Muhammad, Saleem +3 more
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Phytotoxic lignans ofLeucophyllum frutescens
Natural Toxins, 1999Bioassay-guided fractionation of the hexane:ethyl acetate (1:1) extract of the leaves of Leucophyllum frutescens (Berl.) I.M.Johnst (Scrophulariaceae) led to the isolation of its phytotoxic constituents diayangambin (1), epiyangambin (2), diasesartemin (3) and epiashantin (4). Phytotoxicity was demonstrated as inhibition of seed germination of Agrostis
A M, Rimando +3 more
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2016
Overview D. Dimmel Determining Lignin Structure by Chemical Degradations C. Lapierre Electronic Spectroscopy of Lignins J. A. Schmidt Vibrational Spectroscopy U. P. Agarwal and R. H. Atalla NMR of Lignins J. Ralph and L. L. Landucci Heteronuclear NMR Spectroscopy of Lignins D. S.
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Overview D. Dimmel Determining Lignin Structure by Chemical Degradations C. Lapierre Electronic Spectroscopy of Lignins J. A. Schmidt Vibrational Spectroscopy U. P. Agarwal and R. H. Atalla NMR of Lignins J. Ralph and L. L. Landucci Heteronuclear NMR Spectroscopy of Lignins D. S.
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