Anthraquinonesof the roots of Pentas micrantha.

Citation:
Yenesew A, Endale M, M., Erdelyi, Ekberg A, HM A, Ndakala A, A., Sunnerhagen. "Anthraquinonesof the roots of Pentas micrantha." Molecules . 2013;18,:311-321.

Abstract:

Pentas micrantha is used in the East African indigenous medicine to treat malaria. In the first investigation of this plant, the crude methanol root extract showed moderate antiplasmodial activity against the W2- (3.37 μg/mL) and D6-strains (4.00 μg/mL) of Plasmodium falciparum and low cytotoxicity (>450 μg/mL, MCF-7 cell line). Chromatographic separation of the extract yielded nine anthraquinones, of which 5,6-dihydroxylucidin-11-Omethyl ether is new. Isolation of a munjistin derivative from the genus Pentas is reported
here for the first time. The isolated constituents were identified by NMR and mass spectrometric techniques and showed low antiplasmodial activities.

Keywords: anthraquinone; malaria; Pentas micrantha; Rubiaceae; 5,6-dihydroxylucidin-11-O-methyl ether 1.

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