Inaba, Haruko; Hiraiwa, Yukiko; Yoshida, Satoshi; Tamura, Mina; Kuroda, Asako; Ogawa, Aki; Aoyagi, Yutaka; Ohta, Akihiro; Takeya, Koichi Heterocycles, 2005, vol. 65, # 11 p. 2657 - 2665 doi: 10.3987/COM-05-10500