Nitta, Aiko; Fujii, Hideaki; Sakami, Satoshi; Nishimura, Yutaka; Ohyama, Tomofumi; Satoh, Mikiya; Nakaki, Junko; Satoh, Shiho; Inada, Chifumi; Kozono, Hideki; Kumagai, Hiroki; Shimamura, Masahiro; Fukazawa, Tominaga; Kawai, Hideki Bioorganic and Medicinal Chemistry Letters, 2008 , vol. 18, # 20 p. 5435 - 5438