Bligh, Annie Sim WanAnnie Sim WanBlighXu, J.-L.Gu, L.-H.Wang, Z.-T.Han, Z.-Z.Liu, S.-J.2021-04-142021-04-142016https://repository.sfu.edu.hk/handle/sfu/549Two new steroidal ketones (1, 2), together with 10 known steroids (3–12) and five known steroidal saponins (13–17), have been obtained from the pitch of Tetrapanax papyrierus. The structures of 1 and 2 were elucidated as 3β-hydroxystigmast-8, 22-diene-7,11-dione and 3β-hydroxystigmast-8-ene-7,11-dione by IR, HR-ESI-MS, 1D and 2D NMR techniques. Except for 4, 14, 15, 16, 13 compounds reported in this paper were isolated from Tetrapanax papyriferus for the first time.enjournal article10.1080/10286020.2016.1196194