Toba, Tetsuya; Murata, Kenji; Futamura, Junko; Nakanishi, Kyoko; Takahashi, Bitoku; Takemoto, Naohiro; Tomino, Minako; Nakatsuka, Takashi; Imajo, Seiichi; Goto, Megumi; Yamamura, Takashi; Miyake, Sachiko; Annoura, Hirokazu Bioorganic and Medicinal Chemistry, 2012, vol. 20, # 9 p. 2850 - 2859 doi: 10.1016/j.bmc.2012.03.025