title: Oleanane trietrpenoids from Cedrela montana (Meliaceae).
abstract: Two new oleanane-type triterpenes, characterized as 3-oxo-11alpha,12alpha-epoxy-oleanan-28,13beta-olide and 3-oxo-olean-11-en-28,13beta-olide , were isolated from the fruits and seeds of Cedrela montana (Meliaceae). In addition, the known compounds oleanonic acid, a mixture of beta-sitosterol and stigmasterol, and the limonoid photogedunin were also isolated. The structures of the new compounds were established by spectroscopic methods, including 2D NMR.
authors.affiliation: Departamento de Química, Universidad Nacional de Colombia, Ciudad Universitaria, Santa Fé de Bogotá.
authors.forename: Leonardo
authors.initials: L
authors.lastname: Castellanos
authors.forename: Rosabel S
authors.initials: RS
authors.lastname: de Correa
authors.forename: Eduardo
authors.initials: E
authors.lastname: Martínez
authors.forename: José S
authors.initials: JS
authors.lastname: Calderon
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D019684:Magnoliopsida / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009828:Oleanolic Acid / Q000031:analogs & derivatives; D010946:Plants, Medicinal / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry; D014197:Trees / Q000737:chemistry; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification; D014329:Tropical Climate
chemical_list: D014315:Triterpenes; C413246:oleanane; D009828:Oleanolic Acid