Triterpenoid saponins with antifeedant activities from stem bark of Catunaregam spinosa (Rubiaceae) against Plutella xylostella (Plutellidae) |
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| Authors: | Gao Guangchun Lu Zhongxian Tao Shuhong Zhang Si Wang Fazuo |
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| Institution: | aGuangdong Key Laboratory of Marine Material Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, PR China;bInstitute of Plant Protection and Microbiology, Zhejiang Academy of Agriculture Science, Hangzhou 310021, PR China;cGuangdong Pharmaceutical University, University City, Guangzhou 510006, PR China |
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| 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. |
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| Keywords: | Triterpenoid saponins Catunaregam spinosa Catunarosides A&ndash D Plutella xylostella Antifeedant activity |
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