title: New 20-membered lactones, irumanolides I and II, produced by a mutant of Streptomyces.
mesh_terms: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents / Q000302:isolation & purification*; D004353:Drug Evaluation, Preclinical; D006027:Glycosides / Q000302:isolation & purification; D018942:Macrolides; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D009154:Mutation; D013302:Streptomyces / Q000235:genetics*; D013329:Structure-Activity Relationship
chemical_list: D000900:Anti-Bacterial Agents; D000935:Antifungal Agents; D006027:Glycosides; D018942:Macrolides; C034626:irumamycin