Takamizawa; Maeda Yakugaku Zasshi, 1954 , vol. 74, p. 746 Chem.Abstr., 1955 , p. 11662 Show Details Takamizawa et al. Yakugaku Zasshi, 1958 , vol. 78, p. 637,642 Chemical and Pharmaceutical Bulletin, 1966 , vol. 14, p. 238 Chem.Abstr., 1958 , p. 18411 Show Details Takamizawa; Hirai Chemical and Pharmaceutical Bulletin, 1964 , vol. 12, p. 393,395