New 2-o-methylrhamno-isoflavones fromStreptomycessp

Autor:	Susanne Grabley, Ralf Thiericke, Dirk Wunderlich, Isabel Sattler, Xiao-Zhang Feng, Jin-Feng Hu
Rok vydání:	2003
Předmět:	chemistry.chemical_classification Magnetic Resonance Spectroscopy biology Stereochemistry Organic Chemistry Daidzein Glycoside Plant Science Isoflavones biology.organism_classification Biochemistry Streptomyces Analytical Chemistry Chemical screening chemistry.chemical_compound chemistry
Zdroj:	Natural Product Research. 17:451-458
ISSN:	1478-6427 1478-6419
Popis:	Chemical screening with extracts of Actinomycetes strains resulted in the detection, isolation and structure elucidation of five new isoflavone glycosides from Streptomyces sp. (GT 51173): 5-O-alpha-L-rhamnopyranosyl genestein (genestein G1, 1), 5-O-alpha-L-rhamnopyranosyl-7-O-[2-O-(methyl)-alpha-L-rhamnopyranosyl] genestein (genestein G2, 2), 7,4'-O-di-[2-O-(methyl)-alpha-L-rhamnopyranosyl] daidzein (daidzein G1, 3), 6-O-methyl-7-O-[2-O-(methyl)-alpha-L-rhamnopyranosyl] daidzein (daidzein G2, 4) and 7-O-[2-O-(methyl)-alpha-L-rhamnopyranosyl] daidzein (daidzein G3, 5). As a striking structural feature, 2-5 bear one or two alpha-L-rhamnopyranosyl sugar moieties with methoxy groups in an axial position at C-2.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cb60fa0550c407f55707f9858b16a1b https://doi.org/10.1080/1478641031000120534 Zobrazit plný text záznamu