title: Four eremophil-9-en-8-one derivatives from Cremanthodium stenactinium samples collected in China.
abstract: Two samples of Cremanthodium stenactinium (Asteraceae) were collected in Sichuan Province, China. From the ethyl acetate extracts of the roots, three new eremophilane-type sesquiterpenoids and one new trinoreremophilane compound were isolated, together with other known eremophilanes. Their structures were determined based on the spectroscopic data. This is the first report of isolation of eremophilane-type compounds from the genus Cremanthodium.
authors.affiliation: Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514 Japan.
authors.forename: Yoshinori
authors.initials: Y
authors.lastname: Saito
authors.forename: Mayu
authors.initials: M
authors.lastname: Ichihara
authors.forename: Yasuko
authors.initials: Y
authors.lastname: Okamoto
authors.forename: Xun
authors.initials: X
authors.lastname: Gong
authors.forename: Chiaki
authors.initials: C
authors.lastname: Kuroda
authors.forename: Motoo
authors.initials: M
authors.lastname: Tori
mesh_terms: D019659:Asteraceae / Q000737:chemistry*; D002681:China; D009682:Magnetic Resonance Spectroscopy; D009281:Naphthalenes / Q000737:chemistry / Q000302:isolation & purification*; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes
chemical_list: D009281:Naphthalenes; D000081223:Polycyclic Sesquiterpenes; D012717:Sesquiterpenes; C018286:eremophilane compounds