1. T. R. Govindachary, Proc. Indian Acad. Sci., 114, 175 (2002).
2. A. A. Salim, Y.-W. Chin, and A. D. Kinghorn, in: Bioactive Molecules and Medicinal Plants, K. G. Ramawat and J. M. Merillon (eds.), Springer-Verlag, Berlin, Heidelberg, 2008, Chap. 1, pp. 1–24.
3. M. Lahlou, Pharmacol. Pharm., 4, 17 (2013).
4. H. Chon, in: Studies in Natural Products Chemistry, Atta-ur-Rahman (ed.), Elsevier B. V., Oxford, UK (2012), Vol. 38, Chap. 11, pp. 305–323.
5. F. Sun and R. Huang, Curr. Drug Targets, 15, 175 (2014).