Kim, Euikyung; Chun, Hyung-Ok; Jung, Sung-Hak; Kim, Jong Hoon; Lee, Jae-Mok; Suh, Byung-Chul; Xiang, Myung Xik; Rhee, Chung K. Bioorganic and Medicinal Chemistry Letters, 2003 , vol. 13, # 14 p. 2355 - 2358