参考文献

Kitagawa, Isao; Baek, Nam In; Kawashima, Keiko; Yokokawa, Yoshihiro; Yoshikawa, Masayuki; Ohashi, Kazuyoshi; Shibuya, Hirotaka Chemical and Pharmaceutical Bulletin, 1996 , vol. 44, # 9 p. 1680 - 1692