Sesquiterpenes and prenylated C6–C3 compounds from the stems of Illicium henryi

One new sesquiterpene compound, namely, illihenlactone A (1), and one new prenylated C6–C3 compound, illihenryione H (2), along with three known sesquiterpenes (3–5) were isolated from the stems of Illicium henryi. The structures of 1 and 2 were elucidated by spectroscopic evidence including NMR, HRESIMS and circular dichroism (CD). Compound 2 exhibited a weak inhibitory ratio for β-glucuronidase release induced by platelet-activating factor (PAF) in rat polymorphonuclear leukocytes (PMNs) in vitro.

Graphical abstractOne new sesquiterpene compound, namely, illihenlactone A (1), and one new prenylated C6–C3 compound, illihenryione H (2), were isolated from the stems of Illicium henryi. The structures of these compounds were determined by extensive spectroscopic and chemical analyses.Figure optionsDownload full-size imageDownload as PowerPoint slide