title: Two new polyporusterones from Polyorus umbellatus.
abstract: Two new polyporusterones named as porusterone I and polyprosterone II were isolated from polyourus umbellatus. Their structures have been established on the basis of spectroscopic analysis.
authors.affiliation: College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China.
authors.forename: Shang-Zheng
authors.initials: SZ
authors.lastname: Zheng
authors.forename: Hong-Peng
authors.initials: HP
authors.lastname: Yang
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Ma
authors.forename: Xu-Wei
authors.initials: XW
authors.lastname: Shen
mesh_terms: D004365:Drugs, Chinese Herbal / Q000737:chemistry*; D004875:Ergosterol / Q000031:analogs & derivatives* / Q000737:chemistry*; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008517:Phytotherapy; D011124:Polyporaceae
chemical_list: D004365:Drugs, Chinese Herbal; D004875:Ergosterol