Results 201 to 210 of about 24,247 (252)
Aryltetralone lignans and 7,8-seco-lignans from Holostylis reniformis
Phytochemistry, 2004 Aryltetralone lignans and two 7,8-seco-lignans were isolated from the acetone and hexane extracts of the roots of Holostylis reniformis, together with (-)-galbacin. Their structures were determined by spectroscopic methods.
Lucia M X Lopes
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Biosynthesis of antimalarial lignans from Holostylis reniformis
Phytochemistry, 2009 Holostylis reniformis biosynthesizes 8-8' linked lignans without 9,9'-oxygenation. To elucidate the biosynthetic pathways to these lignans, the reputed precursors [U-(14)C]phenylalanine, [9-(3)H(1)]coniferyl alcohol, and [9-(3)H(1)]isoeugenol were ...
Isabele R Nascimento, Lucia M X Lopes
exaly +2 more sources
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Lignans and lignan glycosides fromHaplophyllum cappadocicum
Phytochemistry, 1994Abstract Two new lignan glycosides, (−)-cappadoside and (−)-haplodoside, and a new benzylidenebenzylbutyrolactone lignan, (−)-cappadocin, were isolated ...
Gözler B. +4 more
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Plant Foods for Human Nutrition, 2021
Plant lignans possess several properties beneficial for human health and therefore, increasing their contents in foods and beverages is desirable. One of the lignan sources in human diet is wine. To elucidate the origin of lignans contained in wine, LC-MS was used to analyze resinol-related lignans in must, seeds, stems, and wine prepared using ...
Kateřina Dadáková +5 more
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Plant lignans possess several properties beneficial for human health and therefore, increasing their contents in foods and beverages is desirable. One of the lignan sources in human diet is wine. To elucidate the origin of lignans contained in wine, LC-MS was used to analyze resinol-related lignans in must, seeds, stems, and wine prepared using ...
Kateřina Dadáková +5 more
openaire +2 more sources
The Antiviral Action of Lignans
Planta Medica, 1989A total of 18 purified lignans was evaluated for antiviral activity against murine cytomegalovirus (CMV) and Sindbis virus, by means of different treatment regimens. Podophyllotoxin and alpha-peltatin were the most potent compounds, and they apparently inhibited murine CMV at an essential early step in the replication cycle after the adsorption of ...
W D, MacRae, J B, Hudson, G H, Towers
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Lignans have garnered significant interest in various fields of pharmaceuticals, nutrition, and pesticides due to their diverse biological activities. This chapter primarily focuses on the extraction and purification methods of lignans from Schisandra, followed by an extensive examination of qualitative and quantitative analytical techniques, including
Hye Mi Kim, Chul Young Kim
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Hye Mi Kim, Chul Young Kim
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Naphthalene Analogues of Lignans
The Journal of Organic Chemistry, 2002The methodology for the synthesis of podophyllotoxin and thuriferic acid-type lignans has been applied to derivatives carrying a naphthalene moiety. Starting from the 1,3-dithiane of 2-naphthaldehyde afforded the expected analogues in the 2,1-naphthalene series.
Blanca, Madrigal +4 more
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1990
Lignans are widely occurring plant compounds and are closely related to lignin, which forms the woody component of trees and other plants. The lignans are characterized by their dimeric composition from cinnamic acids, and they are attracting increasing attention as a result of their pharmacological properties.
David C. Ayres, John D. Loike
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Lignans are widely occurring plant compounds and are closely related to lignin, which forms the woody component of trees and other plants. The lignans are characterized by their dimeric composition from cinnamic acids, and they are attracting increasing attention as a result of their pharmacological properties.
David C. Ayres, John D. Loike
openaire +1 more source
Chromatographic analysis of lignans
Journal of Chromatography A, 2006Methods and procedures for analysis of lignans in trees and other plants are reviewed. The importance of cautious sample handling and pretreatment procedures to avoid contamination, loss of sample, and unwanted chemical reactions is discussed. Sequential extraction with a non-polar solvent followed by extraction with acetone or ethanol is recommended ...
S M, Willför, A I, Smeds, B R, Holmbom
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2020
Plant lignans constitute a group of diphenolic compounds, including matairesinol, pinoresinol, medioresinol, lariciresinol, sesamin, syringaresinol, secoisolariciresinol, secoisolariciresinol diglucoside, and hydroxymatairesinol, widely distributed in foods and beverages, of which the most important are whole grains, seeds, nuts, vegetables, berries ...
Knudsen, Knud Erik Bach +4 more
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Plant lignans constitute a group of diphenolic compounds, including matairesinol, pinoresinol, medioresinol, lariciresinol, sesamin, syringaresinol, secoisolariciresinol, secoisolariciresinol diglucoside, and hydroxymatairesinol, widely distributed in foods and beverages, of which the most important are whole grains, seeds, nuts, vegetables, berries ...
Knudsen, Knud Erik Bach +4 more
openaire +1 more source