参考文献

Shiraiwa, Tadashi; Ohkubo, Masanori; Kubo, Motoki; Miyazaki, Hideya; Takehata, Masaki; Izawa, Hisashi; Nakagawa, Kazuo; Kurokawa, Hidemoto Chemical and Pharmaceutical Bulletin, 1998 , vol. 46, # 9 p. 1364 - 1369