An acylphenylglycine derivative represented by general formula (I) or a pharmaceutically acceptable salt thereof, and a preventive and remedy for diseases caused by an increased collagenase activity containing the same as the active ingredient, wherein R.sup.1 represents hydrogen atom, methyl, methylaminomethyl or morpholinomethyl; R.sup.2 represents hydrogen atom, hydroxy, fluorine atom, or C.sub.1 -C.sub.4 linear or branched alkyl; and R.sup.3 represents C.sub.1 -C.sub.4 linear or branched alkyl. The compound (I) and the salt maintains a potent collagenase inhibitor activity in the blood for long after being administered, and are useful as a remedy for various diseases believed to be caused by an increased collagenase activity. ##STR1##
化合物(I)或其药学上可接受的盐所代表的酰基苯基甘
氨酸衍
生物,以及包含其作为活性成分的预防和治疗由于
胶原酶活性增加引起的疾病的药物。其中,R.sup.1代表氢原子,甲基,甲基
氨甲基或
吗啡啉甲基;R.sup.2代表氢原子,羟基,
氟原子,或C.sub.1-C.sub.4线性或支链烷基;R.sup.3代表C.sub.1-C.sub.4线性或支链烷基。该化合物(I)和盐在被给予后在血液中保持强大的
胶原酶抑制剂活性,并且被用作各种被认为由于
胶原酶活性增加而引起的疾病的治疗药物。