Claims for Patent: 4,859,692

Summary for Patent: 4,859,692

Title:	Heterocyclic amide derivatives and pharmaceutical use
Abstract:	The invention concerns novel, pharmaceutically useful, amide derivatives of certain benzoheterocyclylalkanoic acids (and related tetrazoles and acylsulphonamides) of the formula I and salts thereof, wherein the radicals R.sup.1, R.sup.2, L, X, Y, Z, A.sup.1, Q, A.sup.2 and M have the meanings set out in the specification. The invention also includes pharmaceutical compositions incorporating a formula I compound or a salt thereof, a process for the manufacture of the said compound, together with intermediates for use in the latter process. ##STR1##
Inventor(s):	Bernstein; Peter R. (Wallingford, PA), Brown; Frederick J. (Newark, DE), Matassa; Victor G. (Wilmington, DE), Yee; Ying Kwong (Kennett Square, PA)
Assignee:	ICI Americas Inc. (Wilmington, DE)
Application Number:	06/852,798
Patent Claims:	1. A compound of formula Ia ##STR37## wherein Ra is hydrogen or (1-4C)alkyl; Rb and Rc are each hydrogen or, together with the existing carbon to carbon bond, form an unsaturated linkage; Rd is hydrogen or (1-10C)alkyl optionally containing one or two double or triple bonds and in which a carbon atom may optionally be replaced by oxygen or sulphur, said (1-10C)alkyl additionally optionally bearing a substituent selected from a group consisting of (1-4C)alkoxy, cyano, carboxy, 1H-tetrazol-5-yl, carbamoyl, N-(1-4C)carbamoyl, N,N-dicarbamoyl, and (1-4C)alkoxycarbonyl, or Rd is selected from a group consisting of (3-8C)cycloalkyl, (3-8C)cycloalkyl-(1-4C)alkyl, (2-6C)alkanoyl and phenyl-(1-4C)alkyl, the phenyl moiety of which may optionally bear a substituent selected from a grou consisting of cyano, halogeno, (1-4C)alkyl, (1-4C)alkoxy and trifluoromethyl; the group R.sup.1.L-- stands for amidic radicals of the formula: R.sup.1.W.CO.-- NH-- or R.sup.1.W.CS.NH--, in which R.sup.1 is selected from a group consisting of (a) (2-10C)alkyl optionally containing 1 or more fluorine substituents: (b) phenyl-(1-6C)alkyl in which the (1-6C)alkyl moiety may optionally bear a fluoro or (1-4C)alkoxy substituent and in which the phenyl moiety may optionally bear a substituent selected from a group consisting of halogeno, (1-4C)alkyl, (1-4C) alkoxy and trifluoromethyl; and (c) (3-8C)cycloalkyl or (3-8C)cycloalkyl-(1-6C)alkyl, the cyclic moiety of any of which optionally may contain one unsaturated linkage and may optionally bear 1 or 2 (1-4C)alkyl substituents; W is oxy, thio, imino or a direct link to R.sup.1 ; R.sup.2 is hydrogen, halogeno, (1-4C)alkyl or (1-4C)alkoxy; Q is a phenylene optionally bearing 1 or more substituents independently selected from a group consisting of halogeno, hydroxy, (1-4C)alkyl, (1-4C)alkoxy and trifluoromethyl; A.sup.1 is (1-2C)alkylene or vinylene; A.sup.2 is methylene, vinylene or a direct link to M; and M is an acidic group selected from a group consisting of carboxy, 1H-tetrazol-5-yl and an acylsulphonamide residue of the formula --CO.NH.SO.sub.m R.sup.3 in which m is the integer 1 or 2 and R.sup.3 is selected from a group consisting of (1-6C)alkyl, (3-8C)cycloalkyl, (6-12C)aryl, heteroaryl comprising 5-12 atoms at least one of which is carbon and at least one of which is selected from a group consisting of oxygen, sulfur and nitrogen, and (6-12C)aryl-(1-4C)alkyl, in any of which the aromatic or heteroaromatic moiety may bear 1 or 2 substituents selected from a group consisting of halogeno, (1-4C)alkyl, (1-4C)alkoxy, trifluoromethyl, nitro and amino; or a pharmaceutically acceptable salt thereof. 2. A compound as claimed in claim 1 wherein R.sup.1 is selected from the group consisting of ethyl, propyl, isopropyl, butyl, isobutyl, sec-butyl, t-butyl, pentyl, 1-ethylpropyl, hexyl, heptyl, 1-ethylpentyl, nonyl, heptafluoropropyl, benzyl, 4-chlorobenzyl, 4-trifluoromethylbenzyl, 4-methylbenzyl, 1-phenylethyl, 2-phenylethyl, 1-methyl-1-phenylethyl, 1-phenylpropyl, 1-phenylpentyl, alpha-fluorobenzyl, alpha-methoxybenzyl, cyclobutyl, cyclopentyl, cyclohexyl, cyclopentylmethyl, cyclohexylmethyl, 2-cyclopentylethyl, 1-cyclopentylbutyl, 1-cyclohexylpropyl, 1-cyclohexylbutyl, 5-methyl-2-(1-methylethyl)cyclohexyl, and 1-cyclohexen-4-yl; R.sup.2 is selected from the group consisting of hydrogen, fluoro, chloro, bromo, methyl and methoxy; R.sup.3 is selected from the group consisting of methyl, isopropyl, butyl, cyclopentyl, phenyl, 4-chlorophenyl, 4-methylphenyl, 2-methylphenyl, natphthyl, thien-2-yl and 6-chloropyrid-3-yl; Ra is selected from hydrogen and methyl; Rb and Rc are selected to each be hydrogen or Rb and Rc are taken together and form an unsaturated linkage with the existing carbon to carbon bond; Rd is selected from the group consisting of hydrogen, methyl, ethyl, propyl, butyl, pentyl, hexyl, allyl, propargyl, 3-methylbutyl, 3-methylbutyl-2-enyl, 2-carbamoylethyl, carboxymethyl, carboxyethyl, N-ethylcarbamoylmethyl, N,N-dimethylcarbamoylmethyl, 2-carboxyvinyl, 2-(methoxycarbonyl)vinyl, 2-methoxyethyl, 3-methoxypropyl, cyclopentyl, cyclopropylmethyl, acetl, benzyl, 3-cyanobenzyl and 4-chlorobenzyl; A.sup.1 is selected from methylene and ethylene; A.sup.2 is selected from a direct linkage and methylene; Q is selected from the group consisting of m-phenylene and p-phenylene, each of which optionally may bear a fluoro, chloro, hydroxy, methyl, methoxy or trifluoromethyl substituent; and W is selected from the group consisting of oxy, imino, thio and a direct linkage. 3. A compound as claimed in claim 2 wherein R.sup.1 is selected from the group consisting of butyl, pentyl, 1-ethylpentyl, 1-phenylpropyl, alpha-fluorobenzyl, alpha-methoxybenzyl, cyclopentyl and cyclopentylmethyl; R.sup.2 is hydrogen; R.sup.3 is phenyl or 2-methylphenyl; Ra is hydrogen; Rb and Rc are selected to each be hydrogen or Rb and Rc are taken together and form an unsaturated linkage with the existing carbon to carbon bond; Rd is selected from the group consisting of hydrogen, methyl, ethyl, propyl, hexyl, allyl, propargyl, 3-methylbutyl, 3-methylbutyl-2-enyl, carboxymethyl, carboxyethyl, N-ethylcarbamoylmethyl, N,N-dimethylcarbamoylmethyl, methoxyethyl, cyclopentyl, cyclopropylmethyl, acetyl, benzyl, and 3-cyanobenzyl; A.sup.1 is methylene; A.sup.2 is a direct link; Q is selected from the group consisting of m-phenylene and p-phenylene, each of which may optionally be substituted by a hydroxy or methoxy; and W is selected from the group consisting of oxy, imino and a direct linkage. 4. A compound as claimed in claim 1 wherein Rb and Rc, together with the existing carbon to carbon bond, form an unsaturated linkage. 5. A compound as claimed in any one of claims 1, 2, 3 or 4 wherein A.sup.1 is methylene; A.sup.2 is a direct link to M; Q is p-phenylene optionally substituted by methoxy; M is selected from the group consisting of carboxy, 1H-tetrazol-5-yl, and a radical of the formula --CO.NH.SO.sub.2 R.sup.4 is phenyl, optionally substituted as defined for R.sup.3. 6. A compound as claimed in claim 1, 2, 3 or 4 wherein R.sup.1.L-- is attached to the benzene moiety of formula Ia in such a way that it bears a para-relationship to the group --NRd--. 7. A compound as claimed in claim 4 consisting of an indole derivative of formula IIa. ##STR38## 8. A compound as claimed in claim 7 selected from the group consisting of (a) compounds of formula IIa wherein M is carboxy and Rd is selected from the group consisting of methyl, propyl, 2-methoxyethyl, N-ethylcarbamoylmethyl and cyclopentyl; (b) compounds of formula IIa wherein M is a radical of the formula --CO.NH.SO.sub.2 R.sup.4 wherein R.sup.4 is phenyl and Rd is selected from the group consisting of hydrogen, methyl, 2-methoxyethyl and N-ethylcarbamoylmethyl; and (c) compounds of formula IIa wherein M is a radical of the formula --CO.NH.SO.sub.2 R.sup.4 wherein R.sup.4 is 2-methylphenyl and Rd is selected from the group consisting of methyl and N,N-dimethylcarbamoylmethyl. 9. A compound as claimed in claim 1 wherein said compound is selected from the group consisting of (a) N-[4-[5-(cyclopentyloxycarbonyl)amino-1-methylindol-3-ylmethyl]-3-methoxyb enzoyl]benzenesulphonamide, (b) N-[4-[5-(cyclopentyloxycarbonyl)amino-1-(N-ethylcarbamoylmethyl)indol-3-yl methyl]-3-methoxybenzoyl]benzenesulphonamide, (c) N-[4-[5-(cyclopentyloxycarbonyl)amino-1-methylindol-3-ylmethyl]-3-methoxyb enzoyl]-2-methylbenzenesulphonamide, (d) N-[4-[5-(2-cyclopentylacetamido)-1-(N,N-dimethylcarbamoylmethyl)indo-3-ylm ethyl]-3-methoxybenzoyl]-2-methylbenzenesulphonamide, (e) N-[4-[5-(N'-cyclopentylureido)-1-methylindol-3-ylmethyl]-3-methoxybenzoyl] -2-methylbenzenesulphonamide, (f) N-[4-[5-(cyclopentyloxycarbonyl)aminoindol-3-ylmethyl]-3-methoxybenzoyl]be nzenesulphonamide, (g) N-[4-[5-(cyclopentyloxycarbonyl)amino-1-(2-methoxyethyl)indol-3-ylmethyl]- 3-methoxybenzoyl]benzenesulphonamide, and (h) N-[4-[5-(2-cyclopentylacetamido)-1-methylindol-3-ylmethyl]-3-methoxybenzoy l]benzenesulphonamide, wherein each of these compounds may be in the form of a free acid or as its corresponding pharmaceutically acceptable salt. 10. A compound as claimed in claim 9 wherein said compound is N-[4-[5-(2-cyclopentylacetamido)-1-methylindo-3-ylmethyl -3-methoxybenzoyl]-benzenesulphonamide. 11. A compound as claimed in claim 9 wherein said compound is N-[4-[5-(cyclopentyloxycarbonyl)amino-1-methylindol-3-ylmethyl]-3-methoxyb enzoyl]-2-methylbenzenesulphonamide. 12. A pharmaceutical composition having leukotriene antagonist properties comprising a pharmaceutically effective amount of a compound as claimed in claim 1 and a non-toxic pharmaceutically-acceptable diluent or carrier. 13. A composition as claimed in claim 12 wherein said composition is in the form of a liquid or powdered aerosol. 14. A method for antagonizing one or more of the actions of leukotrienes in a living mammal comprising administering to said mammal an effective amount of a compound claimed in claim 1. 15. A method as claimed in claim 14 for the treatment of allergic diseases, inflammatory diseases, endotoxic conditions or traumatic shock conditions. 16. A method as claimed in claim 15 for the treatment of allergic asthma. 17. A salt of a compound claimed in any of claims 1-4 and 7-10.