New isoflavone glycosides from Iris spuria L. (Calizona) cultivated in Egypt
Autor: | Junko Takayasu, Yuka Kimura, Hideyuki Ito, Harukuni Tokuda, Salwa F. Farag, Tsutomu Hatano |
---|---|
Rok vydání: | 2008 |
Předmět: |
Tectorigenin
chemistry.chemical_classification Spectrometry Mass Electrospray Ionization Magnetic Resonance Spectroscopy Molecular Structure Phenylpropanoid biology Iris Plant Stereochemistry Chemical structure Iris spuria Genistein Glycoside Phenolic acid biology.organism_classification Isoflavones chemistry.chemical_compound chemistry Vanillic acid Molecular Medicine Organic chemistry Egypt Glycosides |
Zdroj: | Journal of Natural Medicines. 63:91-95 |
ISSN: | 1861-0293 1340-3443 |
DOI: | 10.1007/s11418-008-0291-7 |
Popis: | Two new isoflavone glycosides, tectorigenin 7-O-beta-D-glucopyranoside-4'-O-[beta-D-glucopyranosyl-(1''''--6''')-beta-D-glucopyranoside] (1) and iristectorigenin B 4'-O-[beta-D-glucopyranosyl-(1'' --6'')-beta-D-glucopyranoside] (2), together with 11 known compounds, including six isoflavones, tectorigenin 7-O-beta-D-glucopyranoside-4'-O-beta-D-glucopyranoside (3), tectorigenin 4'-O-[beta-D-glucopyranosyl-(1'''--6'')-beta-D-glucopyranoside] (4), tectorigenin 7-O-beta-D-glucopyranoside (5), genistein 7-O-beta-D-glucopyranoside (6), tectorigenin 4'-O-beta-D-glucopyranoside (7), and tectorigenin (8); two phenolic acid glycosides, vanillic acid 4-O-beta-D-glucopyranoside (9) and glucosyringic acid (10); a phenylpropanoid glycoside, E-coniferin (11); an auronol derivative, maesopsin 6-O-beta-D-glucopyranoside (12); and a pyrrole derivative, 4-(2-formyl-5-hydroxymethylpyrrol-1-yl) butyric acid (13), were isolated from fresh Iris spuria (Calizona) rhizomes. The structures of these compounds were established on the basis of spectroscopic and chemical evidence. Inhibitory effects on the activation of Epstein-Barr virus early antigen were examined for compounds 1-8 and 12. |
Databáze: | OpenAIRE |
Externí odkaz: |