Results 201 to 210 of about 6,501 (224)

Phloroglucinol diglycosides accompanying hydrolyzable tannins from Kunzea ambigua

Phytochemistry, 2008
Six phloroglucinol diglucosides-kunzeaphlogins A-F (1-6) and a hydrolyzable tannin, kunzeatannin A (7)-were isolated along with 10 known polyphenols from the leaf extract of Kunzea ambigua. Structural elucidation of these compounds was based on spectroscopic analyses and chemical properties.
Naoki, Kasajima, Hideyuki, Ito, Tsutomu, Hatano, Takashi, Yoshida   +3 more
openaire   +2 more sources

Anti-inflammatory Hydrolyzable Tannins from Myricaria bracteata

Journal of Natural Products, 2015
Twelve hydrolyzable tannins were obtained from the twigs of Myricaria bracteata, including two new hellinoyl-type dimers, bracteatinins D1 (1) and D2 (2); a new hellinoyl-type trimer, bracteatinin T1 (3); two known monomers, nilotinin M4 (4) and 1,3-di-O-galloyl-4,6-O-(aS)-hexahydroxydiphenoyl-β-d-glucose (5); six known dimers, tamarixinin A (6 ...
Jia-Bao, Liu, Ya-Si, Ding, Ying, Zhang, Jia-Bao, Chen, Bao-Song, Cui, Jin-Ye, Bai, Ming-Bao, Lin, Qi, Hou, Pei-Cheng, Zhang, Shuai, Li   +9 more
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ChemInform Abstract: Hydrolyzable Tannins and Related Polyphenols

ChemInform, 1996
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
T. OKUDA, T. YOSHIDA, T. HATANO
openaire   +1 more source

Combreglutinin, a Hydrolyzable Tannin from Combretum glutinosum

Journal of Natural Products, 1994
Combreglutinin [4], a hydrolyzable tannin, was isolated from the leaves of Combretum glutinosum, and its macrocyclic structure was established on the basis of 1 H- and 13 C-nmr and 2D nmr spectroscopic data and by chemical methods. The three known tannins 2,3-(S)-hexahydroxydiphenoyl-D-glucose [1], punicalin [2], and punicalagin [3] were also ...
Akino Jossang, Jean-Louis Pousset, Bernard Bodo   +2 more
openaire   +1 more source

Hydrolyzable Tannins and Related Polyphenols fromEucalyptus globulus

Journal of Asian Natural Products Research, 2000
Eucaglobulin (1), a new complex of gallotannin and monoterpene, was isolated from the leaves of Eucaloptus globulus. Its structure was elucidated on the basis of spectral data. Four known hydrolyzable tannins [tellimagrandin I (2), eucalbanin C (3), 2-O-digalloyl-1,3,4-tri-O-galloyl-beta-D-glucose (4), 6-O-digalloyl-1,2,3-tri-O-galloyl-beta-D-glucose ...
A J, Hou, Y Z, Liu, H, Yang, Z W, Lin, H D, Sun   +4 more
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Antinutritional Effects of Condensed and Hydrolyzable Tannins

1992
Despite major structural differences, hydrolyzable and condensed tannins often produce similar antinutritional effects. The most common effects are diminished weight gains and lowered efficiency of nutrient utilization. The major biochemical basis for these effects appears not to be inhibition of dietary protein digestion but rather a systemic ...
openaire   +2 more sources

Preparation of antibodies against hydrolyzable plant tannins

Phytochemical Analysis, 1998
Polyclonal antibodies were raised against covalently protein-coupled 1,2,3,4,6-pentagalloylglucose, the common and immediate precursor of the two subclasses of hydrolyzable tannins, i.e. the polyphenolic gallotannins and ellagitannins. The crude antisera were efficiently purified by affinity-chromatography on pentagalloylglucose-substituted Sepharose ...
Daniela Kaspar, Petra Grundhöfer, Georg G. Gross   +2 more
openaire   +1 more source

Antitumor-promoting activities of hydrolyzable tannins in mouse skin

Carcinogenesis, 1992
Ellagic acid and gallic acid and its derivatives, applied topically to female CF-1 mice 20 min before each 12-O-tetradecanoylphorbol-13-acetate (TPA) treatment inhibit the inductions of epidermal ornithine decarboxylase activity, hydroperoxide production and DNA synthesis caused by this potent tumor promoter in relation with their abilities to inhibit ...
H U, Gali, E M, Perchellet, D S, Klish, J M, Johnson, J P, Perchellet   +4 more
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Hydrolyzed Tannins of Euphorbia glareosa Leaves. Structure of Glarein C

Chemistry of Natural Compounds, 2000
The structure of glarein, a new hydrolyzed tannin from Euphorbia glareosa Pall. ex Bieb. leaves, was established using physicochemical properties of the compound itself, its hydrolysis products, and IR, UV, and PMR spectra.
L. N. Gvazava, M. D. Alaniya
openaire   +1 more source

Hydrolyzable Tannins having a Depsidone-forming Valoneoyl Group

HETEROCYCLES, 1990
The orientation of the valoneoyl group in praecoxins C and D as in the structures of praecoxins C and D was unequivocally proved by the 1 H- 13 C long-range shift correlation spectrum of rugosin C which was chemically correlated with praecoxin ...
Takuo Okuda, Tsutomu Hatano, Osamu Namba, Ling Chen, Taeko Yasuhara, Kazufumi Yazaki, Takashi Yoshida   +6 more
openaire   +1 more source