Phragmalin-type limonoids from the mangrove plant Xylocarpus granatum

Five new phragmalin-type limonoids, Xyloccensins Q-U (1-5), along with xyloccensin P, were isolated from the stem and bark of the mangrove plant Xylocarpus granatum. Their structures were elucidated on the basis of extensive 1D and 2D NMR, as well as IR and MS, spectroscopic data analyses.