Two new triterpenoid saponins from Ardisia crenata.
Two new triterpenoid saponins, ardisicrenoside K (1) and ardisicrenoside L (2), have been isolated from the roots of Ardisia crenata Sims. Their structures have been determined as 3beta-O-[alpha-L-rhamnopyranosyl-(1 --> 2)-beta-D-glucopyranosyl-(1 --> 4)-[beta-D-glucopyranosyl-(1 --> 2)]-alpha-L-arabinopyranosyl]-13beta,28-epoxy-16-oxo-30,30-dimethoxyoleanane and 3beta-O-[beta-D-xylopyranosyl-(1 --> 2)-beta-D-glucopyranosyl-(1 --> 4)-[beta-D-glucopyranosyl-(1 --> 2)]-alpha-L-arabinopyranosyl]-13beta,28-epoxy-16alpha,20-dihydroxyoleanane by means of chemical evidences and spectral analysis. Their weak anti-fungal activity against the plant pathogenic fungus Pyricularia oryzae was evaluated in vitro.
Liu
D-L
DL
Department of Natural Products Chemistry, Shenyang Pharmaceutical University, Shenyang, China.
Wang
N-L
NL
Zhang
X
X
Gao
H
H
Yao
X-S
XS
D000935:Antifungal Agents / Q000737:chemistry / Q000302:isolation & purification*; D031644:Ardisia / Q000737:chemistry*; D015394:Molecular Structure; D010935:Plant Diseases; D018517:Plant Roots / Q000737:chemistry; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
D000935:Antifungal Agents; D012503:Saponins; D014315:Triterpenes; C521661:ardisicrenoside K; C521662:ardisicrenoside L