Bioactive apocarotenoids from Tectona grandis

The bioactive fractions of Tectona grandis have yielded seven apocarotenoids, two of which have been isolated for the first time as natural products (tectoionols A and B). The absolute configuration of tectoionol A was determined using a modified Mosher methodology. The general bioactivities of isolated compounds have been studied using etiolated wheat coleoptiles and the phytotoxicity of those compounds that have high levels of activity have been evaluated on standard target species.