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Title: Antimalarial Oxoprotoberberine Alkaloids from the Leaves of Miliusa cuneata
Authors: Thanika Promchai
Atchara Jaidee
Sarot Cheenpracha
Kongkiat Trisuwan
Roonglawan Rattanajak
Sumalee Kamchonwongpaisan
Surat Laphookhieo
Stephen G. Pyne
Thunwadee Ritthiwigrom
Keywords: Biochemistry, Genetics and Molecular Biology
Pharmacology, Toxicology and Pharmaceutics
Issue Date: 22-Apr-2016
Abstract: © 2016 The American Chemical Society and American Society of Pharmacognosy. Five new oxoprotoberberine alkaloids, miliusacunines A-E (1-5), along with nine known compounds, 6-14, were isolated from an acetone extract of the leaves and twigs of Miliusa cuneata. Their structures were elucidated by spectroscopic analysis. All isolated compounds were evaluated for their cytotoxicities against the KB and Vero cell lines and for antimalarial activities against the Plasmodium falciparum strains TM4 and K1 (a sensitive and a multi-drug-resistant strain, respectively). Compound 1 showed in vitro antimalarial activity against the TM4 strain, with an IC50value of 19.3 ± 3.4 μM, and compound 2 demonstrated significant activity against the K1 strain, with an IC50value of 10.8 ± 4.1 μM. Both compounds showed no discernible cytotoxicity to the Vero cell line at the concentration levels evaluated.
ISSN: 15206025
Appears in Collections:CMUL: Journal Articles

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