The molecule is a diastereoisometic mixture containing (2S,4R)- and (2S,4S)-hypoglycin B. A metabolite of hypoglycin A found in unripe ackee fruit. It has a role as a phytotoxin and a plant metabolite. It contains a (2S,4R)-hypoglycin B and a (2S,4S)-hypoglycin B.
(2S)-2-amino-5-[[(1S)-1-carboxy-2-(2-methylidenecyclopropyl)ethyl]amino]-5-oxopentanoic acid