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Study on the inhibitory effect of tannins and flavonoids against the 1,1-diphenyl-2 picrylhydrazyl radical.
Fifty-one tannins and forty-one flavonoids isolated from Oriental medicinal herbs were evaluated for their antioxidant ability with a 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical-generating system.Expand
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Biosynthesis of cannabinoid acids
Abstract Malonic acid, mevalonic acid, geraniol and nerol were incorporated into tetrahydrocannabinolic acid and cannabichromenic acid in Cannabis sativa. The pathway from cannabigerolic acid toExpand
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Antitumor agents, 129. Tannins and related compounds as selective cytotoxic agents.
Fifty-seven tannins and related compounds, including gallotannins, ellagitannins, and condensed and complex tannins, were evaluated for their cytotoxicities against human tumor cell lines, includingExpand
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Tannins and Related Compounds. CXIX. Samarangenins A and B, Novel Proanthocyanidins with Doubly Bonded Structures, from Syzygium samarangens and S. aqueum
Two proanthocyanidins named samarangenins A (1) and B (2) have been isolated, together with a variety of flavan-3-ols, proanthocyanidins and hydrolyzable and complex tannins, from the leaves ofExpand
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Biosynthesis of propyl cannabinoid acid and its biosynthetic relationship with pentyl and methyl cannabinoid acids
Abstract Biosynthesis of propyl cannabinoid acid has been determined by in vitro incubation with a crude enzyme solution from three strains of Cannabis sativa using 14 C-labelled cannabinoid acid.Expand
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Somatic Embryogenesis and Clonal Multiplication of Panax ginseng.
Embryogenesis of PANAX GINSENG was induced from young flower buds via callus during a 3 months culture period. Matured embryos could be germinated on the 1/2 Murashige and Skoog's medium supplementedExpand
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Studies on Epimedium species : flavonol glycosides and isozymes
Abstract Flavonol glycosides, icariin, epimedin B and C, contained in six Epimedium species were qualitatively and quantitatively analysed by HPLC. Significant differences in the flavonol glycosideExpand
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Tannins and related compounds. XV. A new class of dimeric flavan-3-ol gallates, theasinensins A and B, and proanthocyanidin gallates from green tea leaf (1)
Along with four dimeric proanthocyanidin gallates, viz. prodelphinidin B-2 3'-O-gallate (IV) and procyanidins B-2 3, 3'-di-O-gallate (V), B-2 3'-O-gallate (VI) and B-4 3'-O-gallate (VII), two novelExpand
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Magnesium and Ammonium-Potassium Lithospermates B, the Active Principles Having a Uremia-Preventive Effect from Salvia miltiorrhiza
The active components which exhibit the improving effect on uremic symptoms have been isolated from Salviae miltriorrhizae Radix and characterized as magnesium lithospermate (1) andExpand
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Flavan-3-ol and proanthocyanidin allosides from Davallia divaricata
Abstract Four flavan-3-ol glycosides and three proanthoeyanidin glycosides have been isolated from the fern, Davallia divaricata , together with procyanidins B-1 and B-2 and a trimeric procyanidin.Expand
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