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>Antiplasmodial agents from the Bhutanese medicinal plant Corydalis calliantha
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Antiplasmodial agents from the Bhutanese medicinal plant Corydalis calliantha
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机译:来自不丹药用植物延胡索的抗疟原虫药物
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The alkaloidal components of the Bhutanese medicinal plant Corydalis calliantha Long, which is used for the treatment of malaria, have been assessed. Four known alkaloids, protopine (1), scoulerine (2), cheilanthifoline (3) and stylopine (4) are reported from this plant for the first time. The protopine alkaloid, protopine, and the tetrahydroprotoberine alkaloid, cheilanthifoline, showed promising in vitro antiplasmodial activities against Plasmodium falciparum, both wild type (TM4) and multidrug resistant (K1) strains with IC50 values in the range of 2.78–4.29 µm. Such activity had not been demonstrated previously for cheilanthifoline. The results thus support, at a molecular level, the clinical use of this plant in the Bhutanese traditional medicine and identified cheilanthifoline as a potential new antimalarial drug lead.
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