ArticleNatural products and bioprospecting2026
Xylanins A-P, sixteen new guaiane-type dimers from the branches and leaves of Xylopia vielana with anti-proliferative activity against PANC-1 cell line.
Article in Natural products and bioprospecting, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Sixteen previously undiscovered guaiane-type sesquiterpene dimers, xylanins A-P (1-16), along with six known analogues (17-22), were isolated from the branches and leaves of Xylopia vielana with chromatographic techniques. Their structures including absolute configurations were determined by high-resolution electrospray ionization mass spectrometry (HR-ESI-MS), nuclear magnetic resonance (NMR) data, electron circular dichroism (ECD) spectra, as well as X-ray crystallographic analysis. In cytotoxicity test, we found that five compounds (6, 7, 8, 9 and 12) had cytotoxic activities in vitro against the human pancreatic cancer (PANC-1) and human prostate cancer (PC-3) cell lines. Of these compounds, compound 8 showed a relatively greater cytotoxic effect against PANC-1 cell lines with half maximal inhibitory concentration (IC
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