Journal ArticleDOI
Occurrence of polygodial in species of Polygonum genus belonging to Persicaria section
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This article is published in Biochemical Systematics and Ecology.The article was published on 2008-01-01. It has received 18 citations till now. The article focuses on the topics: Persicaria & Polygonum.read more
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Journal ArticleDOI
Influence of plant part, season of collection and content of the main active constituent, on the antifungal properties of Polygonum acuminatum Kunth.
TL;DR: LDCM of Autumn, possessing the highest content of polygodial and the lowest MICs, appeared to be the most suitable extract for being used as antifungal in the traditional Argentinean medicine.
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Comparative Study on the Larvicidal Activity of Drimane Sesquiterpenes and Nordrimane Compounds against Drosophila melanogaster til-til
Iván Montenegro,Luis Eduardo Pino,Enrique Werner,Alejandro Madrid,Luis Espinoza,Luis E. Moreno,Joan Villena,Mauricio Cuellar +7 more
TL;DR: Natural compounds from Drimys winteri Forst and derivatives exhibited larvicidal effects against Drosophila melanogaster til-til and at very low concentrations drimenol, confertifolin, and drimanol displayed antifeedant and larvae growth regulatory activity.
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Approach for Polygodial Extraction from Pseudowintera colorata (Horopito) Leaves Using Deep Eutectic Solvents
TL;DR: In this article, an approach for polygodial extraction using deep eutectic solvents (DESs) is presented, and two newly prepared DESs based on 1-dodecanol and polyethylene glycol were found to be comparable with ethanol in their polygodic extractability.
Journal ArticleDOI
Comparison of the chemical composition of three species of smartweed (genus Persicaria) with a focus on drimane sesquiterpenoids.
TL;DR: The flower stage immediately after fertilisation was the one with the highest content of drimane sesquiterpenoids and leaves contained about 10-fold less of these compounds compared to flowers, suggesting the fitness benefit to depend on either investing a lot or not at all in terpenoid-based secondary defences.
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Determination of the volatile fraction of Polygonum bistorta L. at different growing stages and evaluation of its antimicrobial activity against two major honeybee (Apis mellifera) pathogens.
TL;DR: The composition of the volatile fraction of Polygonum bistorta L. (also known asbistort or snakeroot) was investigated and several classes of compounds were found with a predominance of alcohols in the vegetative phase, terpenes and linear‐chained saturated hydrocarbons in the flowering phase, while saturated aliphatic acids and their methyl esters were predominant in fruiting phase.
References
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Journal ArticleDOI
Antioxidant flavonoids from leaves of Polygonum hydropiper L.
Zhao Feng Peng,Dieter Strack,Alfred Baumert,R. Subramaniam,Ngoh Khang Goh,Tet Fatt Chia,Swee Ngin Tan,Lian Sai Chia +7 more
TL;DR: Evaluation of the antioxidative activity, conducted in vitro, by using electron spin resonance (ESR) and ultraviolet visible (UV-vis) spectrophotometric assays, showed that these isolated flavonoids possess strong antioxidative capabilities.
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Phytoestrogens from the roots of Polygonum cuspidatum (polygonaceae): structure-Requirement of hydroxyanthraquinones for estrogenic activity
TL;DR: Findings indicate that hydroxyanthraquinones such as emodin are phytoestrogens with an affinity to human estrogen receptors, and show that the unchelated hydroxyl group is essential for strong activity.
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A novel lignan and flavonoids from polygonum aviculare
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Polygodial, an antifungal potentiator.
Isao Kubo,Makoto Taniguchi +1 more
TL;DR: It is reported here that a remarkably enhanced efficacy was obtained when actinomycin D was used in combination with polygodial, believed to be acting as an "advance scout," punching holes in the plasma membrane and gaining an entrance into the cell for an antibiotic previously less effective because of problems with cell membrane permeability.
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Activity of drimane antifeedants and related compounds against aphids, and comparative biological effects and chemical reactivity of (-)- and (+)-polygodial.
Yoshinori Asakawa,Glenn W. Dawson,David C. Griffiths,J. Y. Lallemand,Steven V. Ley,Kenji Mori,A. Mudd,Massoume Pezechk-Leclaire,John A. Pickett,H. Watanabe,Christine M. Woodcock,Zhang Zhong-Ning +11 more
TL;DR: Natural (−)-polygodial and the synthetic (+) isomer showed similar levels of activity as aphid antifeedants and in phytotoxicity, fish toxicity, and human taste tests, but reacted at different rates with enantiomers of 1-phenylethylamine.