title: Benzanthrins A and B, a new class of quinone antibiotics. I. Discovery, fermentation and antibacterial activity.
abstract: Nocardia lurida has been shown to produce two novel quinone antibiotics, benzanthrins A and B. The antibiotics were discovered in concentrated butanol extracts of fermentation broths and were separated by TLC and HPLC. Benzanthrins A and B were produced in a fermentation medium consisting of glucose, yeast, selected peptones and CaCO3. The antibiotics were present primarily at 66 hours in shake flask fermentations and from 66 to 162 hours in 14-liter fermentors. Benzanthrins A and B inhibited a number of Gram-positive pathogenic bacteria but were inactive against Gram-negative bacteria.
mesh_terms: D000880:Anthraquinones / Q000096:biosynthesis / Q000302:isolation & purification / Q000494:pharmacology; D000900:Anti-Bacterial Agents / Q000096:biosynthesis / Q000302:isolation & purification / Q000494:pharmacology*; D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D005285:Fermentation; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D008826:Microbial Sensitivity Tests; D009615:Nocardia / Q000378:metabolism
chemical_list: D000880:Anthraquinones; D000900:Anti-Bacterial Agents; C051052:benzanthrin A; C051053:benzanthrin B