Phylattrin, a new cytotoxic xanthone from Calophyllum soulattri.

  title={Phylattrin, a new cytotoxic xanthone from Calophyllum soulattri.},
  author={Siau Hui Mah and Gwendoline Cheng Lian Ee and Soek Sin Teh and Mawardi Rahmani and Yang Mooi Lim and Rusea Go},
  volume={17 7},
Our continuing studies on secondary metabolites from the stem bark of Calophyllum soulattri has led to the isolation of another new diprenylated xanthone, phylattrin (1), in addition to five other xanthones and two common sterols. The xanthones are soulattrin (2), caloxanthone C (3), macluraxanthone (4), brasixanthone B (5) and trapezifolixanthone (6) while the sterols are stigmasterol (7) and β-sitosterol (8). The structures of these compounds were determined on the basis of spectroscopic… CONTINUE READING