The present invention relates to an agent for the prevention or treatment of a renal disease comprising as an active ingredient a 5-amidino-2-hydroxybenzenesulfonamide derivative represented by the general formula:
wherein R
1
is a hydrogen atom or an optionally substituted alkyl group;
R
2
is a dialkylamino group, an alkyl group, a cycloalkyl group, an optionally substituted aryl group etc.; T is an oxygen atom, a sulfur atom etc.; Q is a hydrogen atom or an optionally substituted alkyl group; and Z is a hydrogen atom, a hydroxy group etc., or a pharmaceutically acceptable salt thereof which has an inhibitory effect on mesangial cell proliferation and a decreasing effect on protein excretion in urine, and are useful for preventing or treating of various renal diseases such as IgA nephropathy, diabetic nephropathy, nephritic syndrome and the like.
本发明涉及一种用于预防或治疗肾脏疾病的药剂,其包含作为活性成分的5-
酰胺基-2-羟基
苯磺
酰胺衍
生物,其表示为通式:
其中,R1是
氢原子或可选取代的烷基基团;R2是二烷基
氨基基团、烷基基团、
环烷基团、可选取代的芳基基团等;T是
氧原子、
硫原子等;Q是
氢原子或可选取代的烷基基团;Z是
氢原子、羟基等,或其药学上可接受的盐,具有对系膜细胞增殖的抑制作用和对尿蛋白排泄的降低作用,适用于预防或治疗各种肾脏疾病,如IgA肾病、糖尿病肾病、肾炎综合症等。