Abe, Yoshito; Kayakiri, Hiroshi; Satoh, Shigeki; Inoue, Takayuki; Sawada, Yuki; Inamura, Noriaki; Asano, Masayuki; Aramori, Ichiro; Hatori, Chie; Sawai, Hiroe; Oku, Teruo; Tanaka, Hirokazu Journal of Medicinal Chemistry, 1998, vol. 41, # 23 p. 4587 - 4598 doi: 10.1021/jm980330i