title: ent-Kaurenoids from the roots of Cacalia pilgeriana.
abstract: Two new ent-kaurenoids,19-acetoxyl-ent-3beta,17-dihydroxykaur-15-ene (1), 19-acetoxyl-ent-3beta-hydroxykaur-15-en-17-al (2), together with seven known ent-kaurenoids: ent-kaur-16-en-19-al (3), ent-kaur-16-en-19-oic acid (4), ent-kauran-16beta,17-diol (5), ent-15beta, 16beta-epoxy-17-hydroxykauran-19-oic acid (6),19-acetyl-ent-3beta-hydroxyl-kaur-16-ene (7), ent-3beta,19-dihydroxykaur-16-ene (8), ent-17-hydroxykaur-15-ene (9), were isolated from Cacalia pilgeriana. Their structures were elucidated by spectroscopic methods including 2D NMR spectral analysis.
authors.affiliation: State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, China.
authors.forename: E-W
authors.initials: EW
authors.lastname: Li
authors.forename: K
authors.initials: K
authors.lastname: Gao
authors.forename: Z-J
authors.initials: ZJ
authors.lastname: Jia
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D045786:Diterpenes, Kaurane / Q000737:chemistry / Q000302:isolation & purification*; D018517:Plant Roots / Q000737:chemistry*
chemical_list: C525279:19-acetoxy-3,17-dihydroxykaur-15-ene; C525280:19-acetoxy-3-hydroxykaur-15-en-17-al; D045786:Diterpenes, Kaurane