Neo-clerodane insect antifeedants from Scutellaria alpina subsp. javalambrensis

Seven previously known neo-clerodanes have been isolated from Scutellaria alpina subsp. javalambrensis together with a new diterpenoid, 11-deacetylscutalpin D, whose structure was established as (13 S)-19-acetoxy-4 α,18:8 β,13-diepoxy-11 β-hydroxy-6 α-tigloyloxy-neo-clerodan-15,16-olide by chemical...

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Bibliographic Details
Published in:Phytochemistry (Oxford) 1997-02, Vol.44 (4), p.593-597
Main Authors: Muñoz, Dulce M., de la Torre, María C., Rodríguez, Benjamín, Simmonds, Monique S.J., Blaney, Wally M.
Format: Article
Language:English
Subjects:
Biological and medical sciences
Chemical control
Control
Fundamental and applied biological sciences. Psychology
Phytopathology. Animal pests. Plant and forest protection
Protozoa. Invertebrates
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Summary:Seven previously known neo-clerodanes have been isolated from Scutellaria alpina subsp. javalambrensis together with a new diterpenoid, 11-deacetylscutalpin D, whose structure was established as (13 S)-19-acetoxy-4 α,18:8 β,13-diepoxy-11 β-hydroxy-6 α-tigloyloxy-neo-clerodan-15,16-olide by chemical and spectroscopic means. The antifeedant activity of some of the isolated diterpenoids (scutalpins B-D) was assessed against larvae of Spodoptera littoralis and one of them (scutalpin C) showed very potent activity.
ISSN:0031-9422
1873-3700
DOI:10.1016/S0031-9422(96)00608-5