Murata, Toshiki; Shimada, Mitsuyuki; Kadono, Hiroshi; Sakakibara, Sachiko; Yoshino, Takashi; Masuda, Tsutomu; Shimazaki, Makoto; Shintani, Takuya; Fuchikami, Kinji; Bacon, Kevin B.; Ziegelbauer, Karl B.; Lowinger, Timothy B. Bioorganic and Medicinal Chemistry Letters, 2004 , vol. 14, # 15 p. 4013 - 4017