title: Naturally occurring long-chain beta-hydroxyketones.
abstract: A fraction comprising about 0.7% of the extractable surface lipids of cabbage (Brassica oleracea) leaves was isolated and identified as a mixture of isomeric beta-hydroxyketones consisting mainly of 14-keto-16-hydroxynonacosane and 15-keto-13-hydroxynonacosane.
mesh_terms: D000096:Acetone / Q000032:analysis; D000438:Alcohols / Q000032:analysis* / Q000302:isolation & purification; D000447:Aldehydes / Q000032:analysis; D055598:Chemical Phenomena; D002621:Chemistry; D002849:Chromatography, Gas; D002855:Chromatography, Thin Layer; D003500:Cyclization; D004988:Ethers, Cyclic / Q000032:analysis; D005227:Fatty Acids / Q000032:analysis; D007259:Infrared Rays; D007659:Ketones / Q000032:analysis* / Q000302:isolation & purification; D008027:Light; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D010944:Plants / Q000032:analysis*; D012399:Rotation; D013053:Spectrophotometry; D013237:Stereoisomerism; D014885:Waxes / Q000032:analysis*
chemical_list: D000438:Alcohols; D000447:Aldehydes; D004988:Ethers, Cyclic; D005227:Fatty Acids; D007659:Ketones; D014885:Waxes; D000096:Acetone