研究海南红树植物角果木的二萜类化学成分。通过硅胶、Sephadex LH-20柱色谱以及高效液相色谱等分离纯化手段,从角果木醇提物中共分离得到10个二萜类化合物,运用现代波谱技术鉴定了它们的结构,分别为:(5S*,8S*,9S*,10R*,13S*)-2,16-dihydroxydolabr-4R*,18-epoxy-3,15-dione(1)、tagalsin B(2)、ent-5α,2-oxodolabr-3-ene-3,15,16-triol(3)、(5S*,8S*,9S*,10R*)-3,13S*-dihydroxy-15,16-dinorlabr-3-en-2-one(4)、(5S*,8S*,9S*,10R*,13S*)-3-hydroxy-16-nor-2-oxodolar-3-ene-15-oicacid(5)、(5S*,8S*,9S*,10R*)-13S*,18-dihydroxy-15,16-dinordolabr-4(18)-ene-3-one(6)、(5S*,8S*,9S*,10R*,13S*)-18-hydroxy-16-nor-3-oxodola-br-4(18)-en-15-oicacid(7)、(5S*,8S*,9S*,10R*)-13S*-hydroxy-4S*,18-epoxy-15,16-dinordolabr-1-en-3-one(8)、ent-8(14)-pimarane-16,18-dihydroxy-15-one(9)、ent-8(14)-pimarane-15,18-diol(10)。其中化合物1为新化合物,化合物3和5为首次从角果木中分离得到。
The chemical constituents from the ethanol extract of Ceriops tagal were isolated and purified by column chro- matography on silica gel, Sephadex LH-20 and HPLC. Their structures were identified by physical and spectral data. Ten diterpenoids were isolated and elucidated as (5S* ,8S* ,9S* ,10R* ,13S* )-2,16-dihydroxydolabr-4R* , 18-epoxy- 3,15-dione ( 1 ), tagalsin B (2), ent-5α, 2-oxodolabr-3-ene-3,15,16-triol ( 3 ), ( 5S*, 8S *, 9S *, 10R* ) -3,13S* -di- hydroxy-15,16-dinorlabr-3-en-2-one (4), (5S*, 8S*, 9S*, 10R*, 13S* )-3-hydroxy-16-nor-2-oxodolar-3-ene-15-oic acid (5), ( 5S*, 8S*, 9S*, 10R* ) -13S*, 18-dihydroxy-15,16-dinordolabr-4 ( 18 ) -ene-3-one ( 6 ), ( 5S*, 8S*, 9S*, 10R*, 13S*) -18-hydroxy-16-nor-3-oxodolabr-4 ( 18 ) -en-15-oic acid ( 7 ), ( 5S*, 8S*, 9S*, 10R* ) -13S* -hydroxy- 4S* ,18-epoxy-15,16-dinordolabr-1-en-3-one (8),ent-8(14)-pimarane-16,18-dihydroxy-15-one (9),ent-8(14)-pima- rane-15,18-diol (10). Additionally, compound 1 was a new compound, and compounds 3 and 5 were obtained from C. tagal for the first time.