title: Nitration of antibiotic X-537A and facile conversion to 6-hydroxy-2,7-dimethyl-5-nitroquinoline.
mesh_terms: D000085:Acetates; D000900:Anti-Bacterial Agents; D006900:Hydroxylation; D008745:Methylation; D009566:Nitrates; D011804:Quinolines / Q000138:chemical synthesis*
chemical_list: D000085:Acetates; D000900:Anti-Bacterial Agents; D009566:Nitrates; D011804:Quinolines