参考文献

Mandai, Tadakatsu; Okumoto, Hiroshi; Oshitari, Tetsuta; Nakanishi, Katsuyoshi; Mikuni, Katsuhiko; Hara, Ko-ji; Hara, Ko-zo; Iwatani, Wakao; Amano, Tetsuya; Nakamura, Kosho; Tsuchiya, Yoshinori Heterocycles, 2001, vol. 54, # 2 p. 561 - 566