title: Studies on a new aminoglycoside antibiotic, dactimicin. II. Isolation, structure and chemical degradation.
abstract: A new aminoglycoside antibiotic, dactimicin produced by a Dactylosporangium matsuzakiense SF-2052 has been isolated by column chromatography on a cation-exchange resin and CM-sephadex. The structure of dactimicin was determined to be 4-amino-1,4-dideoxy-3-O-(2,6-diamino-2,3,4,6,7-pentadeoxy-beta-L-lyxo- heptopyranosyl)-1-[(N-formimidoylglycyl)-methylamino]-6-O-methyl-L-chiro-inosit ol. Alkaline hydrolysis of dactimicin afforded 1-N-(N-formylglycyl)fortimicin B, fortimicin B, fortimicin A and an acyl migration product, 2'-N-(N-formylglycyl)fortimicin B.
mesh_terms: D000617:Aminoglycosides / Q000302:isolation & purification; D000900:Anti-Bacterial Agents / Q000302:isolation & purification*; D055598:Chemical Phenomena; D002621:Chemistry; D006868:Hydrolysis
chemical_list: D000617:Aminoglycosides; D000900:Anti-Bacterial Agents; C023527:dactimicin