title: Aurantimycins, new depsipeptide antibiotics from Streptomyces aurantiacus IMET 43917. Production, isolation, structure elucidation, and biological activity.
abstract: Aurantimycins A (1), B (2) and C (3) were isolated from the mycelium of Streptomyces aurantiacus JA 4570 as new representatives of the azinothricin group of hexadepsipeptide antibiotics. Their structures were settled by X-ray diffraction analysis of crystalline aurantimycin A (1), high field homo- and heteronuclear 2D NMR experiments, high-resolution mass spectrometry and amino acid analysis. Aurantimycins are characterized by a new side chain containing fourteen carbon atoms. They display strong activity against Gram-positive bacteria and cytotoxic effects against L-929 mouse fibroblast cells.
authors.affiliation: Hans-Knöll-Institute of Natural Product Research, Jena, Germany.
authors.forename: U
authors.initials: U
authors.lastname: Gräfe
authors.forename: R
authors.initials: R
authors.lastname: Schlegel
authors.forename: M
authors.initials: M
authors.lastname: Ritzau
authors.forename: W
authors.initials: W
authors.lastname: Ihn
authors.forename: K
authors.initials: K
authors.lastname: Dornberger
authors.forename: C
authors.initials: C
authors.lastname: Stengel
authors.forename: W F
authors.initials: WF
authors.lastname: Fleck
authors.forename: W
authors.initials: W
authors.lastname: Gutsche
authors.forename: A
authors.initials: A
authors.lastname: Härtl
authors.forename: E F
authors.initials: EF
authors.lastname: Paulus
mesh_terms: D000818:Animals; D000900:Anti-Bacterial Agents / Q000096:biosynthesis* / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D002460:Cell Line; D003603:Cytotoxins / Q000096:biosynthesis / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D005347:Fibroblasts / Q000166:cytology / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D015394:Molecular Structure; D010455:Peptides; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013302:Streptomyces / Q000378:metabolism*; D014961:X-Ray Diffraction
chemical_list: D000900:Anti-Bacterial Agents; D003603:Cytotoxins; D010455:Peptides