New Antifeedant Grayanane Diterpenoids from the Flowers of Pieris formosa.
نویسندگان
چکیده
Three new grayanane diterpenoids, pierisoids C‒E (1-3), as well as 10 known ones (4-13), were evaluated from the flowers of Pieris formosa, which is used as an insecticide in rural areas of China. Their structures were elucidated on the basis of extensive 1D and 2D NMR spectroscopic data analyses. Significant antifeedant activity of 1, 3 and 10 against the beet armyworm (Spodoptera exigua) was found, indicating that these diterpenoids might also be involved in the plant defense against insect herbivores.
منابع مشابه
Three new highly acylated 3,4-seco-grayanane diterpenoids from the fruits of Pieris formosa.
Phytochemical investigation on the fruits of Pieris formosa resulted in the isolation of three new highly acylated 3,4-seco-grayanane diterpenoids, pierisformotoxins E-G (1-3). Their structures were elucidated on the basis of extensive spectroscopic analysis, including 1D-, 2D-NMR, electrospray ionization-mass spectra (ESI-MS) and high resolution (HR)-MS.
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ورودعنوان ژورنال:
- Molecules
دوره 22 9 شماره
صفحات -
تاریخ انتشار 2017