Eda, Masahiro; Ashimori, Atsuyuki; Akahoshi, Fumihiko; Yoshimura, Takuya; Inoue, Yoshihisa; Fukaya, Chikara; Nakajima, Masahide; Fukuyama, Hajime; Imada, Teruaki; Nakamura, Norifumi Bioorganic and Medicinal Chemistry Letters, 1998, vol. 8, # 8 p. 913 - 918 doi: 10.1016/S0960-894X(98)00131-0