Jg. Urones et al., NEW ANTIFEEDANT NEOCLERODANE TRIOL - SEMISYNTHESIS AND ANTIFEEDANT ACTIVITY OF NEOCLERODANE DITERPENOIDS, Tetrahedron, 51(7), 1995, pp. 2117-2128
Methyl 2 alpha 3 beta,4 beta-trihydroxy-neo-clerodan-15-oate was isola
ted from the acid fraction of Cistus populifolius and its structure de
termined by semisynthesis and confirmed by X-ray diffraction. Three ot
her triols (2, 3 and 4) and an intermediate diol (5) were also synthes
ized as potential antifeedants. The functional groups and stereochemis
try for antifeedancy are discussed.