发明授权
US5017610A Derivatives of p-substituted phenyl ester of pivalic acid 失效
新戊酸对取代苯基酯的衍生物

Derivatives of p-substituted phenyl ester of pivalic acid
摘要:
A derivative of general formula: ##STR1## wherein Y is --SO.sub.2 -- or ##STR2## (i) R.sup.1 and R.sup.2, which may be the same or different, each represent, (1) --H, (2) C1-16 alkyl or (3) the formula: --X-- .circle.A --(R.sup.4).sub.n wherein X is a single-bond, --SO.sub.2 --, C1-4 alkylene, C1-4 alkylene substituted by ##STR3## -- .circle.A -- is carbocyclic or heterocyclic ring, n is 1.about.5, R.sup.4 is (1) --H or C1-8 alkyl, (2) C1-14 alkoxy, (3) C1-6 alkylthio, (4) --OH, halogen, --NO.sub.2 or trihalomethyl, (5) the formula: --NR.sup.41 R.sup.42 wherein R.sup.41 and R.sup.42 each represents halogen or C1-4 alkyl, (6) tetrazole, (7) --SO.sub.3 H or --CH.sub.2 OH, (8) the formula: --SO.sub.2 NR.sup.41 R.sup.42 (9) the formula: --Z.sup.41 --COOR.sup.43 wherein Z.sup.41 is single-bond, C1-4 alkylene or C2-4 alkenylene, R.sup.43 is --H, C1-4 alkyl or benzyl, (10) the formula: --CONR.sup.41 R.sup.42 (11) the formula: --COO--Z.sup.42 --COOR.sup.43 wherein Z.sup.42 is C1-4 alkylene, R.sup.43 is --H, C1-4 alkyl or benzyl, (12) the formula: --COO--Z.sup.42 --CONR.sup.41 R.sup.42 (13) the formula: --OCO--R.sup.45 wherein R.sup.45 is C1-8 alkyl or p-guanidinophenyl, (14) the formula: --CO--R.sup.46 wherein R.sup.46 is C1-4 alkyl, (15) the formula: --O--Z.sup.43 --COOR.sup.450 wherein Z.sup.43 is C1-6 alkylene, R.sup.450 represents a hydrogen, C1-8 alkyl or p-guanidinophenyl, (16) the formula: ##STR4## wherein ##STR5## is an amino acid residue, R.sup.47 is bond, C1-4 alkyl, R.sup.48 is --H or C1-4 alkyl, R.sup.49 is --OH, C1-4 alkoxy, --NH.sub.2, amino substituted by one or two C1-4 alkyl, carbamoylmethoxy or carbamoylmethoxy substituted by one or two C1-4 alkyl at N atom of carbamoyl, wherein ##STR6## is C3-6 heterocyclic ring, (ii) R.sup.1, R.sup.2 and N atom bonded to R.sup.1 and R.sup.2 together represents heterocyclic ring containing at least a N atom(s) and substituted by --COOH or unsubstituted heterocyclic ring containing at least a N atom(s), R.sup.3 is (1) --H, (2) --OH, (3) C1-6 alkyl, (4) halogen, (5) C1-4 alkoxy or (6) C2-5 acyloxy, m is 1-4.or non-toxic salt or an acid addition salt thereof possess inhibitory activity on elastase, and therefore is useful for treating and/or preventing agent for pulmonary emphysema, atherosclerosis and rheumatoid arthritis and the like.
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