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Chemical Constituents and Their Activities From the Seeds of Ormosia hosiei

A new cytisine-like alkaloid, hosimonoal (1), with a fused monoterpene group, and 6 known compounds (2-6) were isolated from the seeds of Ormosia hosiei Hemsl. et Wils. The structure of the new compound was confirmed by high resolution electrospray ionization mass spectroscopy (HRESIMS), 1D and 2D nuclear magnetic resonance (NMR) spectroscopy, and electronic circular dichroism, and the others by 1H and 13C NMR spectroscopy and comparison with the literature data. In addition, compounds 1, 2, 3, and 6 showed moderate cytotoxic effects against A2780, A-549, HepG2, and MCF-7 cell lines with IC50 values ranging from 5.7 to 36.5 μM.