Moritomo, Ayako; Yamada, Hiroyoshi; Watanabe, Toshihiro; Itahana, Hirotsune; Akuzawa, Shinobu; Okada, Minoru; Ohta, Mitsuaki Bioorganic and Medicinal Chemistry, 2013 , vol. 21, # 24 p. 7841 - 7852