1. Two tirucallane derivatives from Paramignya scandens and their cytotoxic activity.
- Author
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Nguyen Huu Toan Phan, Nguyen Thi Dieu Thuan, Ninh Thi Ngoc, Pham Thi Mai Huong, Nguyen Phuong Thao, Nguyen Xuan Cuong, Nguyen Van Thanh, Nguyen Hoai Nam, Phan Van Kiem, and Chau Van Minh
- Abstract
Various chromatographic separations of the methanolic extract of Paramignya scandens stem and leaves resulted in the isolation of two new tirucallane derivatives, paramignyols A and B (1 and 2). Their structures were established by HR-ESI-MS, 1D and 2D NMR experiments, as well as, comparison with literature data. Compounds 1 and 2 showed significant cytotoxic activity (IC
50 s ~ 3.55-10.50 µM) on four tested human cancer cell lines: KB (epidermoid carcinoma), SK-Mel-2 (melanoma), LU-1 (lung adenocarcinoma), and MCF7 (breast cancer). This is the first report on chemical constituents and biological activities of P. scandens. [ABSTRACT FROM AUTHOR]- Published
- 2014
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