Abstract: [Problem] To provide a compound which is useful as an agent for preventing and/or treating kidney diseases. [Means for Solution] The present inventors have studied compounds having a trypsin inhibitory activity, and have confirmed that a guanidinobenzoic acid ester compound has a trypsin inhibitory activity, thereby completing the present invention. The guanidinobenzoic acid ester compound of the present invention can be used as an agent for preventing and/or treating kidney diseases (for example, chronic kidney disease, acute glomerulonephritis, acute kidney injury, and the like) as an agent which will substitute low-protein diet therapy, and/or as an agent for preventing and/or treating trypsin-related diseases (for example, chronic pancreatitis, gastroesophageal reflux disease, hepatic encephalopathy, influenza, and the like).

Abstract: [Problem]To provide a compound which is useful as an agent for preventing and/or treating kidney diseases. [Means for Solution]The present inventors have studied compounds having a trypsin inhibitory activity, and have confirmed that a guanidinobenzoic acid ester compound has a trypsin inhibitory activity, thereby completing the present invention. The guanidinobenzoic acid ester compound of the present invention can be used as an agent for preventing and/or treating kidney diseases (for example, chronic kidney disease, acute glomerulonephritis, acute kidney injury, and the like) as an agent which will substitute low-protein diet therapy, and/or as an agent for preventing and/or treating trypsin-related diseases (for example, chronic pancreatitis, gastroesophageal reflux disease, hepatic encephalopathy, influenza, and the like).

Abstract: [Problem] Provided is a compound which is useful as an agent for preventing and/or treating renal diseases. [Means for Solution] The present inventors have conducted extensive studies on compounds having a trypsin inhibitory action, and as a result, they have found that a guanidinobenzoic acid compound has a trypsin inhibitory action, thereby completing the present invention. The guanidinobenzoic acid compound of the present invention can be used as an agent for preventing and/or treating renal disease as an agent which will substitute low-protein diet therapy, and an agent for preventing and/or treating trypsin-related diseases, for example, pancreatitis, gastroesophageal reflux disease, hepatic encephalopathy, influenza, and the like.

Abstract: [Problem] Provided is a compound which is useful as an agent for preventing and/or treating renal diseases. [Means for Solution] The present inventors have conducted extensive studies on compounds having a trypsin inhibitory action, and as a result, they have found that a guanidinobenzoic acid compound has a trypsin inhibitory action, thereby completing the present invention. The guanidinobenzoic acid compound of the present invention can be used as an agent for preventing and/or treating renal disease as an agent which will substitute low-protein diet therapy, and an agent for preventing and/or treating trypsin-related diseases, for example, pancreatitis, gastroesophageal reflux disease, hepatic encephalopathy, influenza, and the like.