title: New peroxy triterpenes from the aerial roots of Ficus microcarpa.
abstract: Six new triterpenes, 3 beta-acetoxy-12 beta,13 beta-epoxy-11 alpha-hydroperoxyursane (1), 3 beta-acetoxy-11 alpha-hydroperoxy-13 alpha H-ursan-12-one (2), 3 beta-acetoxy-1 beta,11 alpha-epidioxy-12-ursene (3), (20S)-3 beta-acetoxylupan-29-oic acid (4), (20S)-3 beta-acetoxy-20-hydroperoxy-30-norlupane (5), and 3 beta-acetoxy-18 alpha-hydroperoxy-12-oleanen-11-one (6), together with 3 beta-acetoxy-12-oleanen-11-one (7), were isolated from the aerial roots of Ficus microcarpa. Compounds 1-3, 5, and 6 were characterized as new peroxytriterpenes. The structures of 3 and 6 were confirmed by X-ray crystallography, and their structures were elucidated by spectroscopic and chemical methods.
authors.affiliation: Department of Chemistry, National Taiwan University, Taipei, Taiwan, Republic of China.
authors.forename: Y M
authors.initials: YM
authors.lastname: Chiang
authors.forename: Y H
authors.initials: YH
authors.lastname: Kuo
mesh_terms: D018360:Crystallography, X-Ray; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D010545:Peroxides / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D019685:Rosales / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: D010545:Peroxides; D014315:Triterpenes