title: Ravenic acid, a new tetramic acid isolated from a cultured microfungus, Penicillium sp.
abstract: A new antibiotic polyene tetramic acid, ravenic acid (2), has been isolated from the mycelia of a cultured fungus, Penicillium sp. The structure of ravenic acid was determined by detailed spectroscopic analysis and the major isomer identified as possessing (3Z, 7E, 9E, 11E, 13E) stereochemistry.
mesh_terms: D001315:Australia; D018360:Crystallography, X-Ray; D008968:Molecular Conformation; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010407:Penicillium / Q000737:chemistry*; D011760:Pyrrolidinones / Q000737:chemistry / Q000302:isolation & purification*; D013237:Stereoisomerism
chemical_list: D011760:Pyrrolidinones; C470524:ravenic acid