参考文献

Azami, Hidenori; Barrett, David; Tanaka, Akira; Sasaki, Hiroshi; Matsuda, Keiji; Sakurai, Minora; Matsumoto, Yoshimi; Tawara, Shuichi; Chiba, Toshiyuki; Sakane, Kazuo Bioorganic and Medicinal Chemistry Letters, 1997 , vol. 7, # 11 p. 1409 - 1414