β Scribed by Kuan-Hon Lim; Toh-Seok Kam
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Two new indole alkaloids, viz., arboloscine (1), the first example of a secoleuconoxine, and pericidine (5), an oxidized derivative of pericine (6), were obtained as minor alkaloids from the stem-bark extract of the Malayan Kopsia species, K. arborea. Their structures were established by spectroscopic analysis.
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## Abstract Five new indole alkaloids, __viz.__, kopsiloscine G (**2**), kopsidarine (**4**), kopsimaline F (**6**), kopsidine C __N__βoxide (**7**), and aspidophylline B (**9**), in addition to 17 other known alkaloids, were obtained from the leaf and stemβbark extract of the Malaysian __Kopsia si
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