title: Withanolides from Withania coagulans.
abstract: Two withanolides, 20beta-hydroxy-1-oxo-(22R)-witha-2,5,24-trienolide (1) and withacoagulin (2), along with a known withanolide, 17beta-hydroxy-14alpha, 20alpha-epoxy-1-oxo-(22R)-witha-3,5,24-trienolide (3) were isolated from Withania coagulans. Their structures were elucidated with the help of different spectroscopic techniques.
authors.affiliation: H.E.J. Research Institute of Chemistry, International Center for Chemical Sciences, University of Karachi, Karachi-75270, Pakistan.
authors.forename: Atta
authors.initials: A
authors.lastname: ur-Rahman
authors.lastname: Dur-e-Shahwar
authors.forename: Aniqa
authors.initials: A
authors.lastname: Naz
authors.forename: M Iqbal
authors.initials: MI
authors.lastname: Choudhary
mesh_terms: D004875:Ergosterol / Q000031:analogs & derivatives* / Q000302:isolation & purification*; D019906:Nuclear Magnetic Resonance, Biomolecular; D021241:Spectrometry, Mass, Electrospray Ionization; D013237:Stereoisomerism; D032341:Withania / Q000737:chemistry*
chemical_list: D004875:Ergosterol