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论文 |
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论文题目: |
New Antifeedant C-20 Terpenoids from Leucosceptrum canum
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论文题目英文: |
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作者: |
Luo, Shi-Hong; Hua, Juan; Li, Chun-Huan; Jing, Shu-Xi; Liu, Yan; Li, Xiao-Nian; Zhao, Xu; Li, Sheng-Hong
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论文出处: |
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年: |
2012
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卷: |
14 |
期: |
22 |
页: |
5768-5771 |
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摘要: |
Three novel C-20 terpenoids, norleucosceptroids A-C (1-3), were isolated from the leaves and flowers of Leucosceptrum canum (Labiatae) and were identified by comprehensive spectroscopic analysis and, in the case of 1, single-crystal X-ray diffraction. Structurally, compounds 1-3 should be categorized as pentanor-sesterterpenoids rather than diterpenoids. Moderate antifeedant activity of 1-3 against the generalist plant-feeding insect Helicoverpa armigera was detected, suggesting that they might also be involved in the plant defense against insect herbivores. |
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