Benzoisochromanequinones

**Definition:** Polycyclic aromatic polyketides with tricyclic benzoisochrome quinone skeletons. Benzoisochromanequinones are produced by Actinobacteria, e.g., STREPTOMYCES COELICOLOR, using type II minimal polyketide synthase involving condensation of 8 malonyl-CoA in actinorhodin pathway.

**Tree numbers:** - D02.540.576.438 - D02.806.250.090 - D03.383.663.283.240.095 - D03.633.100.150.240.095 - D04.345.674.375