Tsukayama, Masao; Horie, Tokunaru; Fujimoto, Kunihiro; Nakayama, Mitsuru
Chemical and Pharmaceutical Bulletin, 1986 , vol. 34, p. 2369 - 2374

Tsukayama, Masao; Fujimoto, Kunihiro; Horie, Tokunaru; Masumura, Mitsuo; Nakayama, Mitsuru
Heterocycles, 1984 , vol. 22, # 2 p. 261 - 264