Lim, Moo Hong; Kim, Hea Ok; Moon, Hyung Ryong; Lee, Seung Jin; Chun, Moon Woo; Gao, Zhan-Guo; Melman, Neli; Jacobson, Kenneth A.; Kim, Joong Hyup; Jeong, Lak Shin Bioorganic and Medicinal Chemistry Letters, 2003 , vol. 13, # 5 p. 817 - 820