Term Name:	5-hydroxy-7-prop-2-en-(Z)-ylidene-7,7a-dihydro- 2H-cyclopenta[b]pyran-6-one
Synonyms:	(7Z)-5-hydroxy-7-(prop-2-en-1-ylidene)-7,7a-dihydrocyclopenta[b]pyran-6(2H)-one, Diplosoma ylidene 2
Definition:	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 Z 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.
Ontology:	ChEBI [CHEBI:65801]  ( EBI )