The molecule is a methoxyisoflavan that is (S)-isoflavan substituted by methoxy groups at positions 6 and 3' and hydroxy groups at positions 4 and 4'. It has been isolated from Taxus yunnanensis and exhibits inhibitory activity against CYP3A4. It has a role as a plant metabolite. It is a member of hydroxyisoflavans and a methoxyisoflavan. It derives from a (S)-isoflavan.
(3S,4R)-3-(4-hydroxy-3-methoxyphenyl)-6-methoxy-3,4-dihydro-2H-chromen-4-ol