Shimada, Junichi; Koike, Nobuaki; Nonaka, Hiromi; Shiozaki, Shizuo; Yanagawa, Koji; Kanda, Tomoyuki; Kobayashi, Hiroyuki; Ichimura, Michio; Nakamura, Joji; Kase, Hiroshi; Suzuki, Fumio
Bioorganic and Medicinal Chemistry Letters, 1997 , vol. 7, # 18 p. 2349 - 2352