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. 2003 Nov;64(6):1119-23.
doi: 10.1016/s0031-9422(03)00510-7.

Antifeedant neo-clerodanes from Teucrium tomentosum Heyne. (Labiatae)

G N Krishna Kumari  1 , S Aravind, J Balachandran, M R Ganesh, S Soundarya Devi, S S Rajan, R Malathi, K Ravikumar
Affiliations

Antifeedant neo-clerodanes from Teucrium tomentosum Heyne. (Labiatae)

G N Krishna Kumari et al. Phytochemistry. 2003 Nov.

Abstract

From the acetone extract of Teucrium tomentosum, a new antifeedant neo-clerodane diterpenoid teuctosin (1) was isolated along with teuflin (2), teucrin-H(2) (3), 6beta-hydroxyteuscordin (4), 6beta-acetylteuscordin (5) and montanin-D (6). The structure of the new compound was elucidated comprehensively using 1D and 2D NMR methods and confirmed by X-ray crystallography. All the compounds showed effective antifeedancy against Plutella xylostella and Spodoptera litura at 10 mug/cm(2) of leaf area.

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