Planta Medica, Inhaltsverzeichnis Planta Med 1997; 63(1): 51-54DOI: 10.1055/s-2006-957603 PapersNatural Product Chemistry© Georg Thieme Verlag Stuttgart · New YorkHederagenin Glycosides from the Flowers of Cephalaria transsylvanica Süheyla Kirmizigül1 , Malcolm E. Rose2 1Department of Organic Chemistry, Faculty of Science, Ege University, 35100 Bornova, izmir, Turkey 2Department of Chemistry, The Open University, Walton Hall, Milton Keynes MK7 6AA, U.K. Artikel empfehlen Abstract als PDF herunterladen(opens in new window) Artikel einzeln kaufen(opens in new window) Abstract Three new triterpenoidal saponins, 3-O-[β-D-glucopyranosyl(1→4)-β-D-glucopyranosyl(1→3) -α-L-rhamnopyranosyl (1→4)-β-D-xylopyranosyl]-hederagenin 28-O-[β-D-glucopyranosyl(1→4)-β-D-glucopyranosyl] ester (1), 3-O-[β-D-glucopyranosyl(1→3)-α-L-rhamnopyranosyl(1 →2)-β-D-xylopyranosyl]-hederagenin 28-O-[β-D-glucopyranosyl(1→4)-β-D-glucopyranosyl] ester (2), and 3-O-[α-L-rhamnopyranosyl(1→4)-β-D-xylopyranosyl]-hederagenin (3) were isolated from the flowers of Cephalaria transsylvanica. Two new prosapogenins, 3-O-[β-D-glucopyranosyl(1→4)-β-D-glucopyranosyl(1→3)-α-L-rhamnopyranosyl(1→4)-β-D-xylopyranosyl]-hederagenin (4) and 3-O-[β-D-glucopyranosyl (1→3)-α-L-rhamnopyranosyl(1→2)-β-D-xylopyranosyl]-hederagenin (5) were also isolated after cleavage of the ester-glycosidic linkage of the bisdesmosidic compounds. Structure elucidation was carried out chemically and spectroscopically. Key words Cephalaria transsylvanica - Dipsacaceae - flowers - hederagenin - triterpenoidal saponins PDF (312 kb)
