Journal
NATURAL PRODUCT RESEARCH
Volume 21, Issue 8, Pages 686-691Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786410500480688
Keywords
Echiochilon fruticosum; Boraginaceae; butanol extracts; Echiofruzine; 2D NMR
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The aerial parts of the Tunisian plant Echiochilon fruticosum yielded a novel flavonol diglycoside: naringenin-5-O-beta-glycopyranoside-3-O-alpha-L-rhamnopyranoside, named Echiofruzine (1), together with the known compounds vomifoliol-9-O-beta-D-glucopyraroside (2), 1-oxo-alpha-ionyl-9-O-beta-D-glucopyranoside (3) and I-O-[beta-D-xylopyranosyl(1 -> 6)-beta-D-glucopyranosyl] eugenol (4), described for the first time in the indicated plant. The structures of the four isolated compounds were established on the basis of chemical and spectroscopic evidence.
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