Title
Two new cytotoxic stilbenoid dimers isolated from Cajanus cajan
Author
Nenling Zhang, Xiangchun Shen, Xiaofei Jiang, Jiazhong Cai, Xiaoling Shen, Yingjie Hu, Samuel X. Qiu
Year
2018
Journal
Journal of Natural Medicines
Abstract
Two new stilbenoid dimers, cajanstilbenoids A (1) and B (2), were isolated from the leaves of Cajanus cajan. Planar structures of these compounds were verified by NMR (1D and 2D) and high-resolution electrospray ionization mass spectroscopy (HR-ESI–MS). Absolute configurations were assigned by comparing experimental and calculated electronic CD values. The cytotoxicity of 1 and 2 against human hepatoma (HepG2), human breast adenocarcinoma (MCF-7), and human lung cancer (A549) cells were evaluated in vitro. Compound 1 showed strong cytotoxicity against all the tested cell lines (IC50 values: 2.14–2.56 µM), whereas compound 2 showed strong toxicity only against HepG2 (IC50 value: 5.99 µM) and A549 cells (IC50 value: 6.18 µM).
Instrument
J-810
Keywords
Circular dichroism, Absolute configuration, Natural products, Medicinal