New Antifeedant Grayanane Diterpenoids from the Flowers of Pieris formosa

Three new grayanane diterpenoids, pierisoids C‒E ( - ), as well as 10 known ones ( - ), were evaluated from the flowers of , 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 anti...

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Veröffentlicht in:	Molecules (Basel, Switzerland) Switzerland), 2017-08, Vol.22 (9), p.1431
Hauptverfasser:	Li, Chun-Huan, Luo, Shi-Hong, Li, Sheng-Hong, Gao, Jin-Ming
Format:	Artikel
Sprache:	eng
Schlagworte:	Animals antifeedant activity Carbon Cotton Data processing Diterpenes Diterpenes - chemistry Diterpenes - isolation & purification Diterpenes - pharmacology Ericaceae Ericaceae - chemistry Flowers Flowers & plants Flowers - chemistry grayanane diterpenoids Herbivores Herbivory - drug effects Insecticides Insecticides - chemistry Insecticides - isolation & purification Insecticides - pharmacology Magnetic Resonance Spectroscopy Molecular Structure NMR Nuclear magnetic resonance Pieris formosa Plant Extracts - chemistry Plant Extracts - isolation & purification Plant Extracts - pharmacology Rural areas Spodoptera - drug effects Spodoptera exigua Two dimensional analysis
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Zusammenfassung:	Three new grayanane diterpenoids, pierisoids C‒E ( - ), as well as 10 known ones ( - ), were evaluated from the flowers of , 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 , and against the beet armyworm ( ) was found, indicating that these diterpenoids might also be involved in the plant defense against insect herbivores.
ISSN:	1420-3049 1420-3049
DOI:	10.3390/molecules22091431