Kim, Nam-Jung; Lee, Kwang-Ok; Koo, Bon-Woong; Li, Funan; Yoo, Ja-Kyung; Park, Hyun-Ju; Min, Kyung-Hoon; Lim, Joong In; Kim, Mi Kyung; Kim, Jin-Kwan; Suh, Young-Ger Bioorganic and Medicinal Chemistry Letters, 2007 , vol. 17, # 13 p. 3595 - 3598