Two steroidal alkaloids and an androstane derivative have been isolated from the bark of H. pubescens and their structures elucidated through exhaustive 1D and 2D NMR studies (COSY-45, NOESY, J-resolved, HMQC). © 1993.
Siddiqui, B. S., Usmani, S. B., Begum, S., & Siddiqui, S. (1993). Steroidal alkaloids and an androstane derivative from the bark of Holarrhena pubescens. Phytochemistry, 33(4), 925–928. https://doi.org/10.1016/0031-9422(93)85306-C