The molecule is a carbopolycyclic compound that is 3,4-dihydrotetraphene-1,7,12(2H)-trione substituted by hydroxy groups at positions 6 and 8 and an ethyl group at position 3 (the S stereoisomer). It is isolated from the culture broth of Nocardia brasiliensis and exhibits antibacterial activity against Gram-positive bacteria. It is also active against the multiple drug-resistant P388/ADR tumour cells. It has a role as a metabolite, an antibacterial agent, an antimicrobial agent and an antineoplastic agent. It is a polyphenol, a carbopolycyclic compound and a member of p-quinones.
(3S)-3-ethyl-6,8-dihydroxy-3,4-dihydro-2H-benzo[a]anthracene-1,7,12-trione