title: ent-Kaurene diterpenoids from Isodon rubescens.
abstract: Two kaurenoids, taibairubescensins A and B, were isolated from the ethanol extract of the leaves and branches of Isodon rubescens. Their structures are designated as 2 beta, 3 beta-diacetoxy-11 beta, 13 alpha-dihydroxy-ent-kaur-16-en-15-one and 3 beta, 11 beta-diacetoxy-2 beta, 6 alpha-dihydroxy-ent-kaur-16-en-15-one, respectively, on the basis of detailed spectroscopic analyses.
authors.affiliation: National Laboratory of Applied Organic Chemistry, Lanzhou University, People's Republic of China.
authors.forename: B L
authors.initials: BL
authors.lastname: Li
authors.forename: S N
authors.initials: SN
authors.lastname: Chen
authors.forename: Z X
authors.initials: ZX
authors.lastname: Shi
authors.forename: Y Z
authors.initials: YZ
authors.lastname: Chen
mesh_terms: D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification*; D019686:Lamiaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared
chemical_list: D004224:Diterpenes; C412192:taibairubescensin A; C412193:taibairubescensin B