Compounds of formula I, useful as matrix metalloprotease inhibitors, ##STR1## wherein X, Y and Z are each oxygen; R.sub.1 is selected from the group consisting of (a) n-octyl, (b) n-decyl, (c) biphenyl and (d) (4-phenoxy)phenyl, wherein the terminal monocycle for moieties (c)-(d) is unsubstituted or substituted by a substituent selected from the group consisting of --NH.sub.2, --NO.sub.2, --SO.sub.2 NH.sub.2, --SO.sub.2 CH.sub.3, acetyl, hydroxy, methoxy, ethoxy, cyano and halogen; R.sub.2 and R.sub.3 are each hydrogen; and R.sub.4 and R.sub.5, together with the nitrogen atom to which they are bound, form a piperazinyl or piperidyl ring, wherein the piperazinyl ring is substituted in the 4-position with a substituent selected from the group consisting of (a) a 6-membered aromatic monocycle having 0, 1 or 2 nitrogen atoms and the remainder of the atoms in the monocycle being carbon and (b) hydroxy-C.sub.1 -C.sub.6 alkyl, wherein the monocycle is unsubstituted or substituted by a substituent selected from the group consisting of halogen, --NH.sub.2, --NO.sub.2, --SO.sub.2 NH.sub.2, --SO.sub.2 CH.sub.3, acetyl and cyano.

Смеси формулы iego, полезные как иы АБС битор metalloprotease матрицы, ## ## STR1 при котором х, ы и з будут каждый кислород; R.sub.1 выбрано от n-octyl группы consist of (a), (b) n-decyl, (c) бифенил и (d) (4-phenoxy)phenyl, при котором терминальное monocycle для moieties (c)-(d-(d) unsubstituted или заменено заместителем выбранным от группы consist of -- NH.sub.2, -- NO.sub.2, -- SO.sub.2 NH.sub.2, -- SO.sub.2 CH.sub.3, ацетил, окси, methoxy, ethoxy, cyano и галоид; R.sub.2 и R.sub.3 будут каждым водоподом; и R.sub.4 и R.sub.5, together with атом азота к которому они прыгнуто, формирует кольцо piperazinyl или piperidyl, при котором piperazinyl кольцом заменено в 4-position при заместитель выбранный от группы consist of (a) ароматичное monocycle 6-membered имея 0, 1 или 2 атомов азота и остаток атомов в monocycle углерод и (b) hydroxy-C.sub.1 - алкил C.sub.6, при котором monocycle unsubstituted или заменено заместителем выбранным от галоида группы consist of, -- NH.sub.2, -- NO.sub.2, -- SO.sub.2 NH.sub.2, -- SO.sub.2 CH.sub.3, ацетил и cyano.

 
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