The molecule is a macrolide that is 4,15-dioxabicyclo[9.3.1]pentadec-9-en-3-one substituted by a hydroxy group at position 14 and a methyl group at position 5 (the 1R,5S,9E,11R,14S stereoisomer). It is isolated from the marine-derived fungus Aspergillus ostianus and exhibits cytotoxic activity against mouse lymphocytic leukemia cells (L1210). It has a role as an antineoplastic agent and an Aspergillus metabolite. It is a macrolide, a secondary alcohol, a bridged compound and a cyclic ether.
(1R,5S,9E,11R,14S)-14-hydroxy-5-methyl-4,15-dioxabicyclo[9.3.1]pentadec-9-en-3-one