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Three New Monoterpenoid Indole Alkaloids from Ervatamia pandacaqui

Three new monoterpenoid indole alkaloids, ervapandine A (1), (3R)‐hydroxyibogaine (3), 12‐hydroxyakuammicine N(4)‐oxide (6), along with four known ones, were isolated from the twigs and leaves of Ervatamia pandacaqui. The structures of the new alkaloids were elucidated by spectroscopic methods and sugar hydrolysis experiment. All of the compounds were evaluated for their cytotoxicity against three human cell lines. Compound 7 showed moderate cytotoxic activity.