title: [Chemical constituents in the stem of Premna crassa Hand. -Mazz].
abstract: In this paper four compounds isolated from the stem of Premna crassa are described. Their structures have been identified as friedelin, epifriedelanol, stearic acid and beta-sitosterol respectively by comparing their chemical and spectroscopic data with those of the authentic samples.
authors.affiliation: Department of Pharmacy, Guangxi College of Traditional Chinese Medicine, Nanning.
authors.forename: S
authors.initials: S
authors.lastname: Wei
authors.forename: X
authors.initials: X
authors.lastname: Si
authors.forename: X
authors.initials: X
authors.lastname: Xu
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D009828:Oleanolic Acid / Q000031:analogs & derivatives / Q000302:isolation & purification; D012855:Sitosterols / Q000302:isolation & purification; D013229:Stearic Acids / Q000302:isolation & purification; D014315:Triterpenes / Q000302:isolation & purification; D000094042:Lupanes
chemical_list: D004365:Drugs, Chinese Herbal; D009828:Oleanolic Acid; D012855:Sitosterols; D013229:Stearic Acids; D014315:Triterpenes; C031183:stearic acid; C055670:friedelinol; C025473:gamma-sitosterol; C060796:friedelin; D000094042:Lupanes