［1，2，5］ oxadiazole ［3，4-b］ pyrazine-5，6-（1H，3H）-dione（1） was synthesized directly from 3，4-diaminofurazan and oxalic acid by one-step amide condensation reaction， and the corresponding ionic salts 2-5 were further synthesized by reaction with base. The structures of compounds 1-5 were characterized by infrared spectrum （IR）， 1H and 13C nuclear magnetic resonance（NMR）. The structures of compounds 1 and 5 were further characterized by X-ray single crystal diffraction. The thermal behaviors of compounds 1-5 were investigated based on differential scanning calorimetry （DSC） measurement. The thermal decomposition temperatures of compounds 1-5 ranged from 210.5 ℃ to 313.5 ℃. The physicochemical properties and detonation performances of compounds 1-5 were estimated by Gaussian 09 program and Explo 5（v. 6.01）. The calculated detonation velocities of compounds 1-5 ranged from 7327 m·s^-1 to 8555 m·s^-1， and the detonation pressures ranged from 20.5 GPa to 30.6 GPa. The impact and friction sensitivities were determined by using BAM technology. The impact sensitivity of compound 1 is 27 J and the friction sensitivity is 280 N. The impact sensitivities of compounds 2-4 are all greater than 40 J and the friction sensitivities of 2-4 are 360 N. The impact sensitivity of sodium salt is 7 J and the friction sensitivity is 120 N. Among them， energetic salts 3 and 4 are expected to be new energetic materials with high energy and low sensitivity.