title: Two new triterpenoid saponins from Ardisia crenata.
abstract: 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.
authors: Department of Natural Products Chemistry, Shenyang Pharmaceutical University, Shenyang, China.
authors: D-L
authors: DL
authors: Liu
authors: N-L
authors: NL
authors: Wang
authors: X
authors: X
authors: Zhang
authors: H
authors: H
authors: Gao
authors: X-S
authors: XS
authors: Yao
mesh_terms: 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*
chemical_list: D000935:Antifungal Agents; D012503:Saponins; D014315:Triterpenes; C521661:ardisicrenoside K; C521662:ardisicrenoside L