Limonoids from Trichilia elegans ssp. elegans

From the seeds of Trichilia elegans ssp. elegans , six new limonoids, four of which possess the uncommon seco -A, B and D carbocyclic rings, have been isolated, together with two known limonoids-kihadanin A and B and 3-O-β- d -glucopyranosyl-sitosterol . The structures of these compounds have been established on the basis of 1D and 2D NMR spectroscopic techniques.