title: Two new steroids from sclerotia of the fungus Omphalia lapidescens.
abstract: Two new steroids, leiwansterols A and B, along with three known ones (3-5), were isolated from the sclerotia of the fungus Omphalia lapidescen. Their structures were elucidated on the basis of spectral data. The isolated compounds showed weak anti-tobacco mosaic virus activity.
authors.affiliation: a Research & Development Center of Biorational Pesticide, Northwest A&F University , Yangling , 712100 , P.R. China.
authors.forename: He
authors.initials: H
authors.lastname: Yan
authors.forename: Xu
authors.initials: X
authors.lastname: Rong
authors.forename: Pi-Ting
authors.initials: PT
authors.lastname: Chen
authors.forename: Xing
authors.initials: X
authors.lastname: Zhang
authors.forename: Zhi-Qing
authors.initials: ZQ
authors.lastname: Ma
mesh_terms: D000363:Agaricales / Q000737:chemistry; D000818:Animals; D000998:Antiviral Agents / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D001203:Ascomycota; D015394:Molecular Structure; D013256:Steroids / Q000737:chemistry / Q000302:isolation & purification*; D014027:Tobacco Mosaic Virus / Q000187:drug effects
chemical_list: D000998:Antiviral Agents; D013256:Steroids; C587276:leiwansterol A; C587275:leiwansterol B