RESUMO
@#Eleven alkaloids were isolated from the twigs and leaves of Ervatamia pandacaqui using chromatographic methods of silica gel, Sephadex LH-20, ODS, and HPLC.Their structures were elucidated by physical,chemical and spectroscopic methods and determined as voacristine 7-hydroxyindolenine (1),iboxygaine (2), 19S-hydroxyibogamine (3), 3-oxotabersonine (4), perivine (5), pericyclivine (6), rhazinalinol (7), geissoschizol (8), 3, 14-dihydroolivacine (9), vallesamine (10), and conolobine A (11), respectively.All compounds were isolated from this plant for the first time.
RESUMO
To inverstigate the alkaloids from the twigs and leaves of Ervatamia pandacaqui, eleven known alkaloids were isolated by silica gel, Sephadex LH-20, and ODS column chromatography, as well as RP-HPLC. Their structures were elucidated by UV, IR, MS, and NMR spectral data as coronaridine (1), 3-oxocoronaridine (2), 19S-heyneanine (3), 19R-heyneanine (4), voacangine (5), 3-oxovoacangine (6), voacristine (7), 19-epi-voacristine (8), iso-voacangine (9), coronaridine 7-hydroxyindolenine (10), and voacangine 7-hydroxyindolenine (11). Compounds 1-11 were isolated from E. pandacaqui for the first time.