Four new labdane diterpenoids, labda-7,12(E),14-triene. labda-7,12(E), 14-t
riene-17-al, labda-7,12(E),14-triene-17-01, labda-7,12(E),14-triene-17-oic
acid, were isolated from the stem bark of Croton oblongifolius. The structu
re of these compounds were established by spectroscopic data and chemical t
ransformation. (C) 1998 Elsevier Science Ltd. All rights reserved.