Kim, Bok Young; Ahn, Joong Bok; Lee, Hong Woo; Kang, Sung Kwon; Lee, Jung Hwa; Shin, Jae Soo; Ahn, Soon Kil; Hong, Chung Il; Yoon, Seung Soo European Journal of Medicinal Chemistry, 2004 , vol. 39, # 5 p. 433 - 447