Ohba, Masashi; Mukaihira, Takafumi; Fuji, Tozo Heterocycles, 1992 , vol. 33, # 1 p. 21 - 26 Title/Abstract Full Text View citing articles Show Details Ohba; Mukaihira; Fujii Chemical and Pharmaceutical Bulletin, 1994 , vol. 42, # 9 p. 1784 - 1790