Reddy, M. Vijaya Bhaskar; Su, Chung-Ren; Chiou, Wen-Fei; Liu, Yi-Nan; Chen, Rosemary Yin-Hwa; Bastow, Kenneth F.; Lee, Kuo-Hsiung; Wu, Tian-Shung Bioorganic and Medicinal Chemistry, 2008 , vol. 16, # 15 p. 7358 - 7370