Af. Mateos et al., A biomimetic approach to C-secolimonoids: Synthesis of CDE ohchinolide andnimbolidin model compounds, SYNLETT, (9), 2001, pp. 1399-1402
A concise and stereoselective synthesis of CDE ohchinolide and nimbolidin m
odel compounds has been accomplished in ten and twelve steps respectively f
rom alpha -cyclocitral, in 30% overall yield. The key step is a biomimetic
type of allylic rearrangement induced by thionyl chloride. A potent insect
antifeedant activity was found for two of the model compounds synthesised.