Phytochemical investigation of Millettia racemosa Benth. led to the identification of an undescribed isoflavan, (+)-(3S)-8-(3-methylbut-2-en-1-yl)-7-methoxy-6,2′,4′-trihydroxyisoflavan, namely milletiaisoflavan (1). The structure of the isolate was elucidated by spectroscopic evidence (one- and two-dimensional nuclear magnetic resonance, ultraviolet, mass spectrometry, and circular dichroism spectra).
Kim et al. (Thu,) studied this question.