The molecule is a withanolide that is the 17alpha-hydroxy derivative of withanolide D. Isolated from Tubocapsicum anomalum and Withania somnifera, it exhibits cytotoxic activity. It has a role as an antineoplastic agent. It is a delta-lactone, a 20-hydroxy steroid, a 4-hydroxy steroid, an enone, an ergostanoid, a secondary alcohol, a tertiary alcohol, a withanolide, a 17alpha-hydroxy steroid and an epoxy steroid. It derives from a withanolide D.
(1S,2R,6S,7R,9R,11S,12S,15R,16S)-15-[(1S)-1-[(2R)-4,5-dimethyl-6-oxo-2,3-dihydropyran-2-yl]-1-hydroxyethyl]-6,15-dihydroxy-2,16-dimethyl-8-oxapentacyclo[9.7.0.02,7.07,9.012,16]octadec-4-en-3-one