Actinopyrone A is a gamma-pyrone compound isolated from a Streptomyces sp.. It shows selective (>10E6 fold) and potent (MIC 0.0001 μg/ml) activity against Helicobacter pylori, the principal cause of peptic ulcer disease. Actinopyrone A was originally identified for its coronary vasodilating activity and weak activity against some Gram-positive bacteria and dermatophytes.
