Chemical investigation of the leaves of Guarea trichilioides afforded
six diterpenoids, including four labdane and two clerodane derivatives
. The following four are new: 3-oxolabd-8(17),12Z,14-triene, 3x-hydrox
ylabd-8(17),12Z,14-triene, 3 beta-hydroxylabd-8(17),12Z, 14-triene and
(-)-2-oxo-13-hydroxy,3,14-clerodandiene.