title: Triterpenoid saponins with antifeedant activities from stem bark of Catunaregam spinosa (Rubiaceae) against Plutella xylostella (Plutellidae).
abstract: Seven triterpenoid saponins, including four new compounds, catunarosides A-D (1-4), and three known compounds, swartziatrioside (5), aralia-saponin V (6), araliasaponin IV (7) were isolated from the stem bark of Catunaregam spinosa, a Chinese mangrove associate. Their structures were elucidated on the basis of their spectral data and hydrolysis experiments. The antifeedant activities of compounds 1-7 against Plutella xylostella were also evaluated.
authors.affiliation: Guangdong Key Laboratory of Marine Material Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China. gaogc@scib.ac.cn
authors.forename: Guangchun
authors.initials: G
authors.lastname: Gao
authors.forename: Zhongxian
authors.initials: Z
authors.lastname: Lu
authors.forename: Shuhong
authors.initials: S
authors.lastname: Tao
authors.forename: Si
authors.initials: S
authors.lastname: Zhang
authors.forename: Fazuo
authors.initials: F
authors.lastname: Wang
mesh_terms: D000818:Animals; D007915:Lepidoptera / Q000187:drug effects*; D024301:Plant Bark / Q000737:chemistry*; D019666:Rubiaceae / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D014315:Triterpenes / Q000737:chemistry*
chemical_list: D012503:Saponins; D014315:Triterpenes