Koh, J.J., Lin, S., Aung, T.T., Lim, F., Zou, H.X., Bai, Y., Li, J.G., Lin, H.F., Pang, L.M. and Koh, W.L. (2015) Amino acid modified xanthone derivatives: Novel, highly promising mem-brane-active antimicrobials for multidrug-resistant gram-positive bacterial infections. Journal of Medicinal Chemistry, 58, 739-752.