Subscribe to RSS
DOI: 10.1055/s-2006-957603
© Georg Thieme Verlag Stuttgart · New York
Hederagenin Glycosides from the Flowers of Cephalaria transsylvanica
Publication History
1996
1996
Publication Date:
04 January 2007 (online)
![](https://www.thieme-connect.de/media/plantamedica/199701/lookinside/thumbnails/10.1055-s-2006-957603-1.jpg)
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