Chang, Jang-Yang; Lin, Chyun-Feng; Pan, Wen-Yu; Bacherikov, Valeriy; Chou, Ting-Chao; Chen, Ching-Huang; Dong, Huajin; Cheng, Shu-Yun; Tasi, Tsong-Jen; Lin, Yi-Wen; Chen, Kuo-Tung; Chen, Li-Tzong; Su, Tsann-Long Bioorganic and Medicinal Chemistry, 2003 , vol. 11, # 23 p. 4959 - 4969