The isolation and purification of the leaves of Alseodaphne corneri Kosterm yielded two aporphines; N-metyllaurotetanine and
laurotetanine. This phytochemical study involves extraction, separation by using various chromatographic methods and
structural determination by spectroscopic technique such as UV, IR, NMR including 1D-NMR (1H, 13C and DEPT), 2D-NMR
(COSY, NOESY, HMQC/HSQC, and HMBC) and MS.