1617-49-8Relevant articles and documents
Tannins and related polyphenols of euphorbiaceous plants. XI. Three new hydrolyzable tannins and a polyphenol glucoside from Euphorbia humifusa
Yoshida,Amakura,Liu,Okuda
, p. 1803 - 1807 (1994)
Three new hydrolyzable tannins, euphormisins M1, M2 and M3, were isolated from Euphorbia humifusa Willd., and respectively characterized as 1,3,6-tri-O-galloyl-4-O-brevifolincarboxyl-β-D-glucose (19), an oxidative metabolite (23) of geraniin, and 1,3,6-tri-O-galloyl-α-D-glucose (18), by spectroscopic and chemical methods. A new ellagic acid glucoside (16) and fifteen known tannins, including geraniin (8) and four dimers [euphorbins A (13), B (14), excoecarianin (15) and eumaculin A (12)], were also isolated.
3,3'-DI-O-METHYLELLAGIC ACID 4-O-RHAMNOSIDE FROM THE ROOTS OF PROSOPIS JULIFLORA
Malhotra, S.,Misra, K.
, p. 2043 - 2044 (1981)
From the roots of Prosopis juliflora a new glycoside, 3,3'-di-O-methylellagic acid 4-O-α-L-rhamnopyranoside, and procyanidin have been characterized.Key Word Index - Prosopis juliflora; Leguminosae; 3,3'-di-O-methylellagic acid 4-O-α-L-rhamnopyranoside; procyanidin.
Ellagic acid glycosides with hepatoprotective activity from traditional Tibetan medicine Potentilla anserina
Morikawa, Toshio,Imura, Katsuya,Akagi, Yoshinori,Muraoka, Osamu,Ninomiya, Kiyofumi
, p. 317 - 325 (2017/10/17)
Two new gallic acid glycosides, potentillanosides G (1) and H (2), were newly isolated from the methanol extract of the tuberous roots of Potentilla anserina (Rosaceae), together with a known compound, ellagic acid 3-O-α-l-rhamnopyranoside (3). Their structures were elucidated on the basis of chemical and physicochemical evidence. Among the constituents, potentillanoside H (2, IC50?=?99.5?μM) was found to show hepatoprotective activity.
Antibacterial ellagic Acid derivatives and other constituents from pancovia pedicellaris
Soh, Rene F.,Bankeu, Jean K.,Lenta, Bruno N.,Mba'Ning, Brice M.,Ngouela, Silvere,Tsamo, Etienne,Sewald, Norbert
experimental part, p. 1070 - 1076 (2010/03/02)
Two new ellagic acid derivatives, named panconosides A (1)and B (2) were isolated from Pancovia pedicellaris together with eleven known compounds (3-13). The structures of 1 and 2,as well as those of the known compounds were established by spectroscopic m
Total synthesis of 3,3′,4-tri-O-methylellagic acid from gallic acid
Alam, Ashraful,Tsuboi, Sadao
, p. 10454 - 10465 (2008/02/12)
Total synthesis of 3,3′,4-tri-O-methylellagic acid has been described from commercially available gallic acid. Construction of the crucial unsymmetric Ar-Ar bond has been carried out in various methods such as Heck coupling, Heck coupling followed by oxidation or anionic Fries rearrangement, Suzuki cross-coupling, etc., but all the attempts were unsuccessful. Then, finally it has been achieved by intramolecular Ullmann coupling reaction.
Ellagic acid derivatives from the leaves of Eugenia jambos Linn
Chakravarty, Ajit Kumar
, p. 1316 - 1318 (2007/10/03)
From the methanolic extract of the leaves of Eugenia jambos, a new ellagic acid derivative, 3,3′,4′-tri-O-methylellagic acid-4-O-β-D-glucopyranoside has been isolated along with 3,3′,4′-tri-O-methylellagic acid. Its structure has been elucidated mainly on the basis of 2D NMR spectral analyses and chemical correlation.
ISOLATION AND STRUCTURES OF ELLAGIC ACID DERIVATIVES FROM EUPHORBIA ACAULIS
Bindra, R. S.,Satti, N. K.,Suri, O. P.
, p. 2313 - 2316 (2007/10/02)
Key Word Index-Euphorbia acaulis; Euphorbiaceae; 3,3'-di-O-methyl ellagic acid 4'-rutinoside; 3,4,3'-tri-O-methyl ellagic acid 4'-rutinoside.Abstract-A new ellagic acid glycoside, 3,3'-di-O-methyl ellagic acid 4'-rutinoside, along with 3,4,3'-tri-O-methyl ellagic acid 4'-rutinoside and 3,4,3'-tri-O-methyl ellagic acid have been isolated from the rhizomes of Euphorbia acaulis.The structures of these compounds have been established on the basis of spectral (1H NMR, 13C NMR, MS, IR, UV) and chemical evidence.
