Results 211 to 220 of about 23,718 (250)

Cytotoxic lignans from Podophyllum, and the nomenclature of aryltetralin lignans

Phytochemistry, 1981
Abstract 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
openaire   +1 more source

A lignan and a lignan derivative from the fruit of Forsythia suspensa

Phytochemistry Letters, 2019
Abstract 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, Qian Wei, Zhi-Hao Zou, Chen-Zhi Sun, Qin Wang, Gang Zhao, Xin-Jia Yan, Tian-Yi Yu, Chun-Li Gan   +8 more
openaire   +1 more source

An Update on Bioactive Plant Lignans

ChemInform, 2005
AbstractChemInform 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, Hyoung Ja, Kim, Muhammad Shaiq, Ali, Yong Sup, Lee   +3 more
openaire   +2 more sources

Phytotoxic lignans ofLeucophyllum frutescens

Natural Toxins, 1999
Bioassay-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, F E, Dayan, J R, Mikell, R M, Moraes   +3 more
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Lignin and Lignans

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.
openaire   +1 more source

Lignane

1977
Walter Karrer, Emile Cherbuliez, Conrad Hans Eugster   +2 more
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Effect of germination on lignan biosynthesis, and antioxidant and antiproliferative activities in flaxseed (Linum usitatissimum L.)

Food Chemistry, 2016
Hong Wang, Xinbo Guo, Charles S Brennan   +2 more
exaly  

Lignans

2018
openaire   +2 more sources

Gadain, a lignan from jatropha gossypifolia

Phytochemistry, 1984
J Banerji
exaly  

Lignans

1989
O. R. Gottlieb, M. Yoshida
openaire   +1 more source