Compounds represented by formula (I):
wherein each symbol is as defined in the description, and pharmaceutically acceptable salts thereof are useful as hyperglycemic inhibitors having a serine protease inhibitory action and as prophylactic or therapeutic drugs for diabetes.
                            公式(I)所代表的化合物:其中每个符号如描述中所定义,并且其药学上可接受的盐,可用作具有
丝氨酸蛋白酶抑制作用的高血糖
抑制剂,并作为糖尿病的预防或治疗药物。