This invention relates to compounds of the formula: ##STR1## wherein R.sub.1 represents lower alkyl, phenyl or phenyl lower alkyl; R.sub.2 and R.sub.4 represent lower alkyl; and R.sub.3 represents lower alkyl, benzyloxyalkyl, alkoxybenzyl or benzyloxybenzyl wherein the oxyalkyl or alkoxy moiety contain 1 to 6 carbon atoms; and a, b, and c represent chiral centers with optional R or S stereochemistry. These compounds inhibit collagenase and are useful in the treatment of arthritis. Also disclosed are processes for manufacture of the compounds and pharmaceutical compositions containing them.
本发明涉及以下式子的化合物:##STR1## 其中,R.sub.1代表较低的烷基,苯基或苯基较低烷基;R.sub.2和R.sub.4代表较低的烷基;而R.sub.3代表较低的烷基,苄氧基烷基,烷氧基苯甲基或苄氧基苯甲基,其中氧代烷基或烷氧基基团含有1至6个碳原子;而a、b和c代表手性中心,可选R或S立体
化学。这些化合物抑制
胶原酶并可用于治疗关节炎。还公开了制造这些化合物的方法和含有它们的制药组合物。