title: Six new ursane- and oleanane-type triterpenes from the aerial roots of Ficus microcarpa.
abstract: Four new ursane-type triterpenes, 3beta-acetoxy-11alpha-methoxy-12-ursene (1), 3beta-acetoxy-11alpha-ethoxy-12-ursene (2), 3beta-acetoxy-11alpha-hydroperoxy-12-ursene (3), 3beta-hydroxy-11alpha-hydroperoxy-12-ursene (4), and two new oleanane-type triterpenes, 3beta-acetoxy-11alpha-ethoxy-12-oleanene (5), 3beta-acetoxy-111alpha-hydroperoxy-12-oleanene (6), together with 3beta-acetoxy-11alpha-hydroxy-12-ursene (7), 3beta,11alpha-diacetoxy-12-ursene (8), 3beta-acetoxy-11alpha-hydroxy-12-oleanene (9), were isolated from the aerial roots of Ficus microcarpa L. f. Their structures were elucidated by spectroscopic and chemical methods.
authors.affiliation: Department of Chemistry, National Taiwan University, and National Research Institute of Chinese Medicine, Taipei, ROC. yhkuo@ccms.ntu.edu.tw
authors.forename: Y H
authors.initials: YH
authors.lastname: Kuo
authors.forename: Y M
authors.initials: YM
authors.lastname: Chiang
mesh_terms: D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009828:Oleanolic Acid / Q000031:analogs & derivatives; D010936:Plant Extracts / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification
chemical_list: D010936:Plant Extracts; D014315:Triterpenes; C413246:oleanane; D009828:Oleanolic Acid