title: [Chemical studies on Pyrrosia gralla (Gies.) Ching].
abstract: From Pyrrosia gralla four compounds were isolated and identified stigmasterol(I), ursolic acid (II), mangiferin(III) and sucrose(IV) by physical and chemical means. Compounds I and II were obtained from Pyrrosia for the first time.
authors.affiliation: Hengyang Medical College, Hengyang 421001.
authors.forename: X
authors.initials: X
authors.lastname: Zheng
authors.forename: Y
authors.initials: Y
authors.lastname: Xu
authors.forename: J
authors.initials: J
authors.lastname: Xu
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry*; D013265:Stigmasterol / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*; D014966:Xanthenes / Q000737:chemistry / Q000302:isolation & purification*; D044004:Xanthones; D000097245:Ursolic Acid
chemical_list: D004365:Drugs, Chinese Herbal; D013265:Stigmasterol; D014315:Triterpenes; D014966:Xanthenes; D044004:Xanthones; D000097245:Ursolic Acid; C013592:mangiferin