参考文献

Yamashita, Masayuki; Murai, Hiromichi; Mittra, Asmita; Yoshioka, Tomomichi; Kawasaki, Ikuo; Gotoh, Mariko; Higashi, Tomoko; Hatsuyama, Rie; Ohta, Shunsaku Heterocycles, 1998 , vol. 48, # 11 p. 2327 - 2337