This disclosure describes compounds of the formula ##STR1## wherein R.sub.1 represents hydrogen, fluoro, chloro, lower alkyl having 1 to 4 carbon atoms, or lower alkoxy having 1 to 4 carbon atoms, and R.sub.2 represents lower alkyl or ##STR2## where R.sub.5 represents hydrogen, fluoro, chloro, lower alkyl or lower alkoxy, and R.sub.3 and R.sub.4 each independently represent lower alkyl as defined above, and R.sub.3 and R.sub.4 together with N represent ##STR3## or pharmaceutically acceptable acid addition salts thereof, which are useful as anti-diabetic agents.
本公开涉及以下式的化合物##STR1##其中R.sub.1代表氢、
氟、
氯、具有1到4个碳原子的低烷基,或具有1到4个碳原子的低烷氧基,而R.sub.2代表低烷基或##STR2##其中R.sub.5代表氢、
氟、
氯、低烷基或低烷氧基,而R.sub.3和R.sub.4各自独立地代表上述定义的低烷基,且R.sub.3和R.sub.4与N一起代表##STR3##或其药学上可接受的酸盐,这些化合物可用作抗糖尿病药物。