From the leaves of Conyza trihecatactis we have isolated the labdane-t
ype diterpenes and diterpene xylosides ent-sclareol, ent-3 beta-hydrox
ymanool, ent-manool 13-0-beta-D-xylopyranoside and ent-sclareol 13-0-b
eta-D-xylopyranoside. Structure elucidation was achieved by spectrosco
pic methods.