title: 5-O-(alpha-D-galactopyranosyl)-D-glycero-pent-2-enono-1,4-lactone: characterization in the oxalate-producing fungus, Sclerotinia sclerotiorum.
abstract: Extracts of sclerotia from Sclerotinia sclerotiorum, a fungal phytopathogen, contain two electrochemically-active constituents, D-glycero-pent-2-enono-1,4-lactone (trivial name: D-erythroascorbic acid), and a previously unidentified compound, here characterized as 5-O-(alpha-D-galactopyranosyl)-D-glycero-pent-2-enono-1,4-lactone on the basis of its physical and chemical properties and its two hydrolytic products, D-galactose and D-erythroascorbic acid. Treatment of this galactoside with alkaline hydrogen peroxide produces oxalic acid as observed earlier with erythroascorbic acid.
authors.affiliation: Department of Botany, Washington State University, Pullman 99164, USA.
authors.forename: S E
authors.initials: SE
authors.lastname: Keates
authors.forename: F A
authors.initials: FA
authors.lastname: Loewus
authors.forename: G L
authors.initials: GL
authors.lastname: Helms
authors.forename: D L
authors.initials: DL
authors.lastname: Zink
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D001203:Ascomycota / Q000737:chemistry*; D005697:Galactosides / Q000737:chemistry / Q000302:isolation & purification*; D006861:Hydrogen Peroxide / Q000737:chemistry; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D015394:Molecular Structure; D010084:Oxidation-Reduction
chemical_list: C116946:5-O-galactopyranosyl-glycero-pent-2-enono-1,4-lactone; D005697:Galactosides; D006861:Hydrogen Peroxide; D015107:4-Butyrolactone