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Phytochemical research on the dry flower of Carthamus tinctorius L. led to the isolation of two new epimeric tetrahydro-β-carboline alkaloids (1 and 2), together with three known analogues (3–5). Their planar structures were determined by comprehensive 1D, 2D-NMR, and HR-ESI–MS spectroscopic data analyses. The absolute configurations of alkaloids 1 and 2 were assigned by comparing their experimental...
Chemical investigation of 70% EtOH exact of Patrinia villosa Juss. led to the isolation, purification and identification of two new lactones (1-2) along with twelve known compounds (3-14). Their structures were established by comprehensive spectroscopic analyses. All compounds were evaluated for their cytotoxic activities against A549, HepG2, Hep3B and MCF-7 cancer cell lines. Compounds 1, 8, 10,...
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