title: New onoceranoid triterpene constituents from Lansium domesticum.
abstract: Three new natural onoceranoid triterpenes, lansionic acid (1), 3beta-hydroxyonocera-8(26),14-dien-21-one (2), and 21alpha-hydroxyonocera-8(26),14-dien-3-one (3), were isolated from the fruit peel of Lansium domesticum together with two known triterpenoids (4 and 5), and their structures were elucidated from spectral data. These triterpenoids exhibited mild toxicity against brine shrimp (Artemia salina).
authors.affiliation: Graduate School of Pharmaceutical Sciences, Chiba University, 1-33 Yayoi-cho, Inage-ku, Chiba 263-8522, Japan.
authors.forename: Tadamitsu
authors.initials: T
authors.lastname: Tanaka
authors.forename: Masami
authors.initials: M
authors.lastname: Ishibashi
authors.forename: Haruhiro
authors.initials: H
authors.lastname: Fujimoto
authors.forename: Emi
authors.initials: E
authors.lastname: Okuyama
authors.forename: Takashi
authors.initials: T
authors.lastname: Koyano
authors.forename: Thaworn
authors.initials: T
authors.lastname: Kowithayakorn
authors.forename: Masahiko
authors.initials: M
authors.lastname: Hayashi
authors.forename: Kanki
authors.initials: K
authors.lastname: Komiyama
mesh_terms: D000818:Animals; D001156:Artemia / Q000187:drug effects; D005638:Fruit / Q000737:chemistry; D029582:Meliaceae / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D013055:Spectrophotometry, Infrared; D013785:Thailand; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
chemical_list: C471747:21alpha-hydroxyonocera-8(26),14-dien-3-one; C471746:3beta-hydroxyonocera-8(26),14-dien-21-one; D014315:Triterpenes; C471745:lansionic acid