Chemical constituents of the seeds of Ammopiptanthus (Leguminosae) and their systematic and ecological significance |
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Authors: | Huanhuan Wei Ping Wu Xuejun Ge Meifang Liu Xiaoyi Wei |
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Affiliation: | 1. South China Botanical Garden, Chinese Academy of Sciences, Leyiju, Guangzhou, Guangdong 510650, China;2. State Key Laboratory of BioControl, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China |
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Abstract: | Eleven flavonoids including a new flavone glycoside, 7,3′-dihydroxy-4′-methoxyflavone-7-O-β-glucopyranoside, and a quinolizidine alkaloid, lupanine, were isolated from the seeds of two Ammopiptanthus (Leguminosae) species, Ammopiptanthus mongolicus and Ammopiptanthus nanus. 7,3′-Dihydroxy-4′-methoxyflavone and lupanine were the major constituents in the seeds of both species. The patterns of seed flavonoids presented a clear systematic relationship between the two species. The simple seed alkaloid composition was presumed to be responsible for the weak defense capability of the seeds to insect pests in both species. |
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Keywords: | Ammopiptanthus mongolicus Ammopiptanthus nanus Ammopiptanthus Leguminosae Flavonoids 7,3&prime -Dihydroxy-4&prime -methoxyflavone-7-O-β-glucopyranoside Lupanine Chemosystematics |
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