Tanabe, Genzoh; Matsuoka, Kanjyun; Yoshinaga, Masahiro; Tsutsui, Nozomi; A. Amer, Mumen F.; Nakamura, Shinya; Nakanishi, Isao; Muraoka, Osamu; Xie, Weijia; Wu, Xiaoming; Yoshikawa, Masayuki Bioorganic and Medicinal Chemistry, 2012, vol. 20, # 21 p. 6321 - 6334,14 doi: 10.1016/j.bmc.2012.09.006