The molecule is an organic heterobicyclic compound that is 7,7a-dihydrocyclopenta[b]pyran-6(2H)-one substituted by a hydroxy group at position 5 and a prop-2-en-1-ylidene group at position 7 (the E isomer). Isolated from the sponge Ulosa and ascidian Diplosoma virens, it exhibits antimicrobial activity and toxicity against HCT116 cells (human colorectal cancer cells) by triggering apoptotic cell death. It has a role as a metabolite, an antimicrobial agent and an antineoplastic agent. It is an organic heterobicyclic compound, an enol, an enone and a cyclic ether.
(7E)-5-hydroxy-7-prop-2-enylidene-2,7a-dihydrocyclopenta[b]pyran-6-one