Ohwada, Tomohiko; Ishikawa, Satoko; Mine, Yusuke; Inami, Keiko; Yanagimoto, Takahiro; Karaki, Fumika; Kabasawa, Yoji; Otani, Yuko; Mochizuki, Masataka Bioorganic and Medicinal Chemistry, 2011 , vol. 19, # 8 p. 2726 - 2741