Pimentelamines A–C, Indole Alkaloids Isolated from the Leaves of the Australian Tree Flindersia pimenteliana

Journal of Natural Products
2017.0

Abstract

Three members of a new class of ascorbic acid-adduct indole alkaloids (1-3), a new prenylated indole alkaloid (4), and five known compounds (5-9) were isolated from the leaves of Flindersia pimenteliana. The structures of 1-4 were elucidated on the basis of their (+)-HRESIMS and 2D NMR spectroscopic data. Antiplasmodial activity was also reported for the natural products against chloroquine-sensitive (3D7) and chloroquine-resistant (Dd2) Plasmodium falciparum with IC50 values ranging from 0.19 to 3.6 μM.

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