... 1185 (1992) 1177 Synthesis of 2-Alkoxy-2,8-diazaspiro[4.5]decane-1,3-diones as Yuji ISHIHARA,*'" Hidehumi YUKIMASA,“ Masaomi M1YAM0T0 ... The test was performed by the method described in the following literature, see M. Miyamoto, S. Narumi, A. Nagaoka ...