Diterpenoids from Fokienia hodginsii.

In continuous research on the chemical constituents of the twigs and leaves of Fokienia hodginsii (Dunn) A. Henry et Thomas growing in Highland, Lam Dong province 4 diterpenoids, including 3-oxo-totarol (totarolone, 1 ), 3 β -hydroxytotarol ( 2 ), 15- nor -labda-8(17),12 E -diene-14-carboxaldehyde-19-oic acid ( 3 ) and 13-oxo-15,16-dinorlabda-8(17),11 E -diene-19-oic acid ( 4 ) were isolated. Their structures were elucidated by the spectroscopic methods and comparison with reported data. This is the first report on the isolation of compounds 1 , 2 and 3 from this plant. Keywords. Fokienia hodginsii ; totarane; nor -labdane diterpenoid.