Extremely potent antifeedant neo-clerodane derivatives of scutecyprol A |
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Authors: | Rosselli Sergio Maggio Antonella Piozzi Franco Simmonds Monique S J Bruno Maurizio |
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Institution: | Dipartimento di Chimica Organica E. Paterno, Università di Palermo, viale delle Scienze, Parco d'Orleans II, 90128 Palermo, Italy. |
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Abstract: | Two known neo-clerodane diterpenoids, scutecyprol A (1) and scutalbin C (2), have been isolated from the acetone extract of the aerial parts of Scutellaria sieberi. The antifeedant activity of scutecyprol A (1), of its 15-oxo derivative (3), and of several halohydrins (4-9), synthesized starting from compounds 1 and 3, against Spodoptera littoralis have been determined and structure-antifeedant relationships are discussed. |
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