Pentacyclic triterpenoids from Rubus xanthocarpus

Eight pentacyclic triterpenoids have been isolated from the aerial parts of Rubus xanthocarpus and four of them are new compounds. Their structures were elucidated on the basis of spectral data and chemical transformations as: 1 α,2 α,3 β,19 α-tetrahydroxyurs-12-en-28-oic and, 2 α,3 α,19 α,24-tetrah...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 1998-12, Vol.49 (8), p.2477-2481
Main Authors: Li, Bao-Zhi, Wang, Bin-Gui, Jia, Zhong-Jian
Format: Article
Language:English
Subjects:
Biological and medical sciences
chemical constituents of plants
Chemical constitution
chemical structure
Fundamental and applied biological sciences. Psychology
glucosyl ester
leaves
medicinal plants
nuclear magnetic resonance spectroscopy
pentacyclic triterpenoid
Plant physiology and development
Rosaceae
Rubus
Rubus xanthocarpus
spectral analysis
triterpenoids
ursane
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Summary:Eight pentacyclic triterpenoids have been isolated from the aerial parts of Rubus xanthocarpus and four of them are new compounds. Their structures were elucidated on the basis of spectral data and chemical transformations as: 1 α,2 α,3 β,19 α-tetrahydroxyurs-12-en-28-oic and, 2 α,3 α,19 α,24-tetrahydroxyurs-12-en-28-oic acid-28- O- β- D-glucopyranusyl ester, 2 α,3 α,19 α-trihydroxyurs-12-en-24-formyl-28-oic acid-28- O- β- D-glucopyranosyl ester and 2,3- O-isopropylidenyl-2 α,3 α,19 α-trihydroxyurs-12-en-28-oic acid.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(98)00161-7