Murakami, Yasushi; Hagishita, Sanji; Okada, Tetsuo; Kii, Makoto; Hashizume, Hiroshi; Yagami, Tatsuroh; Fujimoto, Masafumi Bioorganic and Medicinal Chemistry, 1999, vol. 7, # 8 p. 1703 - 1714 doi: 10.1016/S0968-0896(99)00087-5