Search results for "Scutalbin C"

showing 2 items of 2 documents

Extremely potent antifeedant neo-clerodane derivatives of scutecyprol A

2004

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.

InsecticidesbiologyScutellaria sieberiScutalbin CStereochemistryScutellariaGeneral ChemistryhalohydrinSpodoptera littoralisSpodopterabiology.organism_classificationantifeedant activityDiterpenes ClerodaneLepidoptera genitaliachemistry.chemical_compoundchemistryAcetoneNoctuidaeAnimalsscutecyprol ASettore BIO/15 - Biologia FarmaceuticaScutellaria sieberiGeneral Agricultural and Biological SciencesSpodoptera littoralis
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A diterpenoid with antifeedant activity from Scutellaria rubicunda

1999

Abstract Two diterpenoids have been isolated from Scutellaria rubicunda subsp. linneana : (11 S ,13 S ,15 R and S , 16 R ,19 S )-6 α -acetoxy-19-tigloyloxy-2 α ,19;4 α ,18;11,16;15,16-tetraepoxy-neo-clerodan-15-ol (scutecyprol B) and (11 S ,13 S ,15 R and S , 16 R ,19 S )-6 α -acetoxy-2 α ,19;4 α ,18;11,16;15,16-tetra-epoxy-neo-cleroda-15,19,diol (scutalbin C). Both compounds were tested for antifeedant activity against larvae of some species of Lepidoptera. Scutecyprol B shows potent activity at 100 ppm.

biologyStereochemistryScutalbin CDiolBiological activityPlant ScienceGeneral MedicineHorticulturebiology.organism_classificationBiochemistryTerpenoidLepidoptera genitaliachemistry.chemical_compoundchemistryScutellariaDiterpeneMolecular BiologyPhytochemistry
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