Protolimonoids and Limonoids from the Chinese Mangrove Plant <i>Xylocarpus granatum</i>

Abstract

Abstract magnified image The phytochemical examination of the fruits of a Chinese mangrove plant Xylocarpus granatum led to the isolation of five new protolimonoids, protoxylocarpins A–E ( 1 – 5 , resp.), and two new limonoids xylocarpins J and K ( 6 and 7 , resp.), together with xyloccensins M and Y ( 9 and 10 , resp.). Their structures were determined on the basis of extensive spectroscopic data analysis. The cytotoxic activity of the isolated compounds against tumor cell‐lines HCT‐8, Bel‐7402, BGC‐823, and A2780 were evaluated.