title: Structures of two new diterpenoid dimers from bulbs of Fritillaria ebeiensis.
abstract: Two new ent-kauranoid diterpenoid dimers, fritillebin C (1) and fritillebin D (2), were isolated from the bulbs of Fritillaria ebeiensis G.D. Yu and G.Q. Ji. Their structures were determined to be ent-16beta-hydroxy-kauran-17-yl ent-16beta3-kauran-17-oate (1); ent-16alpha-hydroxy-kauran-17-yl ent-16beta-kauran-17-oate (2) by means of spectral analysis and chemical evidence.
authors.affiliation: Faculty of Pharmaceutical Sciences, Tongji Medical University, Wuhan, China.
authors.forename: J Z
authors.initials: JZ
authors.lastname: Wu
authors.forename: H L
authors.initials: HL
authors.lastname: Ruan
authors.forename: C L
authors.initials: CL
authors.lastname: Zeng
authors.forename: H A
authors.initials: HA
authors.lastname: Cheng
authors.forename: F
authors.initials: F
authors.lastname: Zhang
authors.forename: Q S
authors.initials: QS
authors.lastname: Zhao
authors.forename: H D
authors.initials: HD
authors.lastname: Sun
authors.forename: T
authors.initials: T
authors.lastname: Fujita
mesh_terms: D019281:Dimerization; D004224:Diterpenes / Q000302:isolation & purification*; D019668:Liliaceae / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008956:Models, Chemical
chemical_list: D004224:Diterpenes; C436363:fritillebin C; C436362:fritillebin D