Triterpenoid glycosides from Cephalaria transsylvanica.
On the basis of spectroscopic and chemical methods, the structures of two new triterpenoid glycosides, transsylvanoside E and F, isolated from Cephalaria transsylvanica have been established as 3-O-[beta-D-xylopyranosyl (1-->3)-alpha-L-rhamnopyranosyl (1-->4)-beta-D-glucopyranosyl (1-->4)-beta-D-glucopyranosyl (1-->2)-beta-D-xylopyranosyl]-3 beta,23- dihydroxy delta 12-oleanen-28-carboxylic acid and 3-O-[beta-D-glucopyranosyl (1-->3)-alpha-L-rhamnopyranosyl (1-->4)-beta-D-xylopyranosyl]-28-O-[beta- D-glucopyranosyl (1-->4)-beta-D-glucopyranosyl]-3 beta,23-dihydroxy delta 12-oleanen- 28-carboxylic acid, respectively. A new proglycoside was isolated from the cleavage of the ester-glycoside linkage and it's structure characterized as 3-O-[beta-D-glucopyranosyl (1-->3)-alpha-L- rhamnopyranosyl (1-->4)-beta-D-xylopyranosyl]-3 beta,23-dihydroxy delta 12-oleanen-28-carboxylic acid.
Kirmizigül
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S
Ege University, Faculty of Science, Organic Chemistry Department, Bornova, Izmir, Turkey.
Anil
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H
Rose
M E
ME
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D008969:Molecular Sequence Data; D015394:Molecular Structure; D010946:Plants, Medicinal; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared; D013329:Structure-Activity Relationship; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
D006027:Glycosides; D014315:Triterpenes