title: Seco-prezizaane-type sesquiterpenes and an abietane-type diterpene from Illicium minwanense.
abstract: A methanol extract of the pericarps of Illicium minwanense afforded seven new seco-prezizaane-type sesquiterpenes (2-8) and a new abietane-type diterpene (9), together with six previously known compounds (1 and 10-14). The structures of the new compounds, (1S)- and (1R)-minwanenone (2 and 3), 1alpha-hydroxy-6-deoxypseudoanisatin (4), (2S)-hydroxy-6-deoxypseudoanisatin (5), 3-oxopseudoanisatin (6), (3S,6R)-4,7-epoxy-6-deoxypseudoanisatin (7), 7-O-methylpseudomajucin (8), and (+)-8,11,13,15-abietatetraene (9), were elucidated by spectroscopic data analysis and chemical transformations. The absolute configurations of 1 and 5 were established by X-ray crystallographic analysis of their p-bromobenzoyl derivatives.
authors.affiliation: Institute of Pharmacognosy, Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima 770-8514, Japan.
authors.forename: Ritsuko
authors.initials: R
authors.lastname: Yokoyama
authors.forename: Jian-Mei
authors.initials: JM
authors.lastname: Huang
authors.forename: Atsuko
authors.initials: A
authors.lastname: Hosoda
authors.forename: Kozue
authors.initials: K
authors.lastname: Kino
authors.forename: Chun-Shu
authors.initials: CS
authors.lastname: Yang
authors.forename: Yoshiyasu
authors.initials: Y
authors.lastname: Fukuyama
mesh_terms: D000818:Animals; D002478:Cells, Cultured / Q000187:drug effects; D018360:Crystallography, X-Ray; D004224:Diterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D029523:Illicium / Q000737:chemistry*; D015394:Molecular Structure; D009474:Neurons / Q000187:drug effects; D019906:Nuclear Magnetic Resonance, Biomolecular; D010946:Plants, Medicinal / Q000737:chemistry*; D051381:Rats; D012717:Sesquiterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D013237:Stereoisomerism
chemical_list: D004224:Diterpenes; D004365:Drugs, Chinese Herbal; D012717:Sesquiterpenes