期刊
JOURNAL OF NATURAL PRODUCTS
卷 83, 期 4, 页码 1043-1050出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jnatprod.9b01064
关键词
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资金
- National Center for Complementary and Integrative Health (NCCIH) [R01 AT008088]
- National Science Foundation [CHE-0619382, CHE-0722638]
An extract of Galtonia regalis from the Natural Products Discovery Institute showed moderate antiplasmodial activity, with an IC50 value less than 1.25 mu g/mL. The two known cholestane glycosides 1 and 2 and the five new cholestane glycosides galtonosides A-E (3-7) were isolated after bioassay-directed fractionation. The structures of the new compounds were determined by interpretation of their NMR and mass spectra. Among these compounds, galtonoside B (4) displayed the most potent antiplasmodial activity, with an IC50 value of 0.214 mu M against the drug-resistant Dd2 strain of Plasmodium falciparum.
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