Gemin B and C, dimeric ellagitannins from Geum Japonicum.

Yoshida, Takashi; Maruyama, Yasuhiko; Okuda, Takuo; Memon, Muhammad Usman; Shingu, Tetsuro

doi:10.1248/cpb.30.4245

Cited by 19 publications

(6 citation statements)

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“…Twelve of them were iden ti fied as the known gal lic acid, 8 1-O-galloyl--D-glucoside, 9 1,2,3-tri-O-galloyl--D-glu coside, 10 pedunculagin, 11 2,3-(S)-hexahydroxydiphenoyl-Dglucopyranoside, 12 putranjivain A, 3 corilagin, 4 6 casuariin, 7 putranjivain B, 8 3,3 -di-O-methyl gal lic acid, 9 quercitrin, 20 and rutin 1 on the ba sis of their NMR and MS spec tra, and com par i son with au then tic sam ples and lit er a ture data. In addi tion, 5-desgalloylstarchyurin (1) and 3,3 ,4-tri-O-methyl-4 -O-rutinosyl ellagic acid ( 2) were also iso lated at this time.…”

Section: Re Sults and Discussionmentioning

confidence: 99%

Phenolic Compounds from Formosan Euphorbia tirucalli

Lin

Yeh

Yang

et al. 2001

J Chinese Chemical Soc

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Section: Re Sults and Discussionmentioning

confidence: 99%

Phenolic Compounds from Formosan Euphorbia tirucalli

Lin

Yeh

Yang

et al. 2001

J Chinese Chemical Soc

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“…The main compound of both species was gemin A (37), a dimer that is composed of tellimagrandin II (3) and potentillin (9) via dehydrodigalloyl (m-GOG) group (Fig. 2) Yoshida et al, 1982a). In the leaves and seeds of wood avens, 37 covered ca.…”

Section: -31mentioning

confidence: 99%

Distribution and content of ellagitannins in Finnish plant species

2015

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“…Gemin A . This dimer was isolated from Geum japonicum [ 57 ], and is found specifically in Geum species, while agrimoniin occurs in several genera of Rosaceae [ 56 ]. Coriariin A .…”

Section: Type a Tannins And Related Polyphenols Of Constant Structmentioning

confidence: 99%

Tannins of Constant Structure in Medicinal and Food Plants—Hydrolyzable Tannins and Polyphenols Related to Tannins

2011

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In addition to the commonly used classification as hydrolyzable tannins and condensed tannins, tannins can also be categorized into two other types: polyphenols of constant chemical structure (Type A) and polyphenols of variable composition (Type B). Both types of tannins and related polyphenols account for a large part of plant polyphenols, but accurate structure-activity correlations on a molecular basis can be determined mainly for type A compounds, among which are hydrolysable tannins such as the ellagitannins and their oxidized congeners, some gallotannins, epigallocatechin gallate, caffetannins, etc. Among the activities determined on a molecular basis are the chemical, biological and pharmacological actions such as superoxide anion scavenging, apoptosis, antitumor, anti-EVB, anti-MRSA and anti-plasmin inhibitory activities, etc., in addition to their fundamental activities, i.e., binding to proteins, large molecular compounds and metallic ions, and antioxidant activities. Some structure-specific activities were found for the condensation of dehydroellagitannins with co-existing compounds under mild conditions, and the host-mediated antitumor actions of ellagitannin oligomers. Structures and activities of metabolites of geraniin, a dehydroellagitannin, were revealed. Some stilbenoids and phlorotannins of firm structures have been known to have many activities similar to those of the type A tannins.

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Gemin B and C, dimeric ellagitannins from Geum Japonicum.

Cited by 19 publications

References 0 publications

Phenolic Compounds from Formosan Euphorbia tirucalli

Phenolic Compounds from Formosan Euphorbia tirucalli

Distribution and content of ellagitannins in Finnish plant species

Tannins of Constant Structure in Medicinal and Food Plants—Hydrolyzable Tannins and Polyphenols Related to Tannins

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