Chemical Constituents of Palaquium luzoniense

Triterpene and Sterols from Premna nauseosa Blanco

“…Silica gel chromatography of the dichlorometnahe extract of the leaves of P. nauseosa afforded squalene (1), βsitosterol (2) and stigmasterol (3). The NMR spectra of 1 are in accordance with data reported in the literature for squalene 3 ; 2 for β-sitosterol 4 ; and 3 for stigmasterol 4 4 . Although no biological tests were conducted on the isolated compounds, a literature search of 1-3 revealed that these have diverse bioactivities.…”