Studies on alkalodial constituents in leaves of Uncaria hirsuta / 中国中药杂志

<p><b>OBJECTIVE</b>To study the alkaloidial constituents of the leaves of uncaria hirsuta.</p><p><b>METHOD</b>Some chromatographic methods were applied to isolate pure compounds and their structures were elucidated by spectroscopic methods.</p><p><b>RESULT</b>Eleven compounds were isolated and identified as 19-epi-3-iso-ajmalicine (1), 3-isoajmalicine (2), harman (3), mitraphylline (4), isomitraphylline (5), isorhynchophylline (6), corynoxine (7), rhynchophylline (8), isomitraphyllic acid (9), uncarine A (10) and uncarine B (11).</p><p><b>CONCLUSION</b>Compounds 1-9 were firstly isolated from this plant.</p>