title: Dorsamin-A's, glycerolipids carrying a dehydrophenylalanine ester moiety from the seed-eating larvae of the bruchid beetle Bruchidius dorsalis.
abstract: Using a TLC autographic assay for radical-scavenging activity with the ABTS radical, the presence of lipophilic antioxidants in the larvae of the wild bruchid seed beetle Bruchidius dorsalis was detected. Assay-guided fractionation of the CHCl3-soluble fraction of the larvae resulted in the isolation of new glycerolipids, designated dorsamin-A763, -A737, -A765, -A739, and -A767, comprising 1,2-diacyl-sn-glycero-3-dehydrophenylalanine ester structural units. The ABTS radical scavenging activity of the dorsamin-A's was comparable with or stronger than that of Trolox.
authors: Nagahama Institute of Bio-Science and Technology, 1266 Tamura-Cho, Nagahama, Shiga 526-0829, Japan.
authors: Yayoi
authors: Y
authors: Hirose
authors: Emi
authors: E
authors: Ohta
authors: Yasushi
authors: Y
authors: Kawai
authors: Shinji
authors: S
authors: Ohta
mesh_terms: D000818:Animals; D000975:Antioxidants / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D052160:Benzothiazoles / Q000494:pharmacology; D002839:Chromans; D001517:Coleoptera / Q000737:chemistry*; D005247:Feeding Behavior; D006017:Glycolipids / Q000737:chemistry / Q000302:isolation & purification*; D007814:Larva / Q000737:chemistry; D015394:Molecular Structure; D010649:Phenylalanine / Q000031:analogs & derivatives / Q000737:chemistry; D017382:Reactive Oxygen Species / Q000009:adverse effects; D013451:Sulfonic Acids / Q000494:pharmacology
chemical_list: D000975:Antioxidants; D052160:Benzothiazoles; D002839:Chromans; D006017:Glycolipids; D017382:Reactive Oxygen Species; D013451:Sulfonic Acids; C002502:2,2'-azino-di-(3-ethylbenzothiazoline)-6-sulfonic acid; D010649:Phenylalanine; C018632:phenyldehydroalanine; C010643:6-hydroxy-2,5,7,8-tetramethylchroman-2-carboxylic acid