... A Synthesis of the Lichen Xanthone Thiomelin john A. Elix and Victor j. Portelli Chemistry Department, The Faculties, Australian National University, GPO Box 4, Canberra, ACT 2601. ... B, 1979, 33, 475. Elix, J. A., Jiang, H., and Portelli, VJ, Aust. J. Chem., 1990, 43, 1291. Page 2. ...