Schmeda-Hirschmann, G. Facultad de Recursos Naturales, Universidad de Talca, Casilla 747, Talca, Chile.The roots of Jatropha grossidentata gave, in addition to the previously described rhamnofolanes, nine further diterpenes of the lathyrane type. Furthermore, a new lignan and knowncoumarino-lignan were isolated. The structures were elucidated by means of high field NMR spectroscopy