title: An aldehyde-containing galactolipid from the red alga Gracilariopsis lemaneiformis.
abstract: An unprecedented aldehyde-containing digalactosyldiacylglycerol (DGDAG) has been isolated from the red alga Gracilariopsis lemaneiformis and structurally defined. Its structure was determined as 1-O-[5-hydroxy-12-oxo-dodeca-6(E),8(E),10(E)-trienoyl]-2-O-p almitoyl-3-O- [-beta-D-galactopyranosyl-6,1-alpha-D-galactopyranosyl]-glycerol by nuclear magnetic resonance (NMR) spectroscopy, mass spectrometry and degradation to simple fragments. The identification of this aldehyde-containing DGDAG from G. lemaneiformis, in addition to our previous findings of unusual galactolipids, further indicates that this alga has unique lipoxygenase capacities.
authors.affiliation: College of Pharmacy, Oregon State University, Corvallis 97331.
authors.forename: Z D
authors.initials: ZD
authors.lastname: Jiang
authors.forename: W H
authors.initials: WH
authors.lastname: Gerwick
mesh_terms: D000447:Aldehydes / Q000737:chemistry*; D004075:Diglycerides / Q000737:chemistry*; D038983:Galactolipids; D006017:Glycolipids / Q000737:chemistry*; D019746:Intramolecular Oxidoreductases; D007535:Isomerases; D008084:Lipoxygenase / Q000032:analysis; D008956:Models, Chemical; D000461:Rhodophyta / Q000737:chemistry* / Q000201:enzymology
chemical_list: D000447:Aldehydes; D004075:Diglycerides; D038983:Galactolipids; D006017:Glycolipids; D008084:Lipoxygenase; D007535:Isomerases; D019746:Intramolecular Oxidoreductases; C021377:hydroperoxide isomerase