“…Following repeated chromatographic separation and purification, six ( 1 – 6 ) and eleven ( 7 – 17 ) major steroid alkaloids were isolated from the leaves and stem bark respectively, in addition to one nitrogen-free steroid ( 18 ) and a non-steroid alkaloid-like compound ( 19) from the leaves ( Figure 1 ). The compounds were identified as 3β-holaphyllamine ( 1 ), holaphyllamine acetamide ( 2 ), 3β- N -methylholaphyllamine ( 3 ), 3α-holaphyllamine ( 4 ), 3β-dihydroholaphyllamine ( 5 ), 3α-dihydroholaphyllamine ( 6 ), holadienine ( 7 ), holonamine (8), cona-4,6-dienin-3-one ( 9 ), cona-3,5-dienin-7-one ( 10 ), conessimine ( 11 ), isoconessimine ( 12 ), conessine ( 13 ), holarrhesine ( 14 ), holarrhetine ( 15 ), holarrheline ( 16 ), holarrhenine ( 17 ), kurchinin ( 18 ) and N 3 -isopentenyl adenine ( 19 ) by comparison of their 1D and 2D NMR data and their exact masses from UHPLC/+ESI QTOF MS/MS analysis, which were in agreement with previously reported data [ 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 ].…”