Substituted 5-(alkyl)carboxamide imidazoles

Information

  • Patent Grant
  • 5234917
  • Patent Number
    5,234,917
  • Date Filed
    Friday, November 30, 1990
    34 years ago
  • Date Issued
    Tuesday, August 10, 1993
    31 years ago
Abstract
Angiotensin II receptor antagonists having the formula: ##STR1## which are useful in regulating hypertension and in the treatment of congestive heart failure, renal failure, and glaucoma pharmaceutical compositions including these antagonists, and methods of using these compounds to produce angiotensin II receptor antagonism in mammals.
Description
Claims
  • 1. A compound of the formula: ##STR14## in which: R is adamantyl, or naphthyl, biphenyl, or phenyl, with each aryl group being unsubstituted or substituted by one to three substituents selected from halo, C.sub.1-6 alkyl, C.sub.1-6 alkoxy, OH, CN, CO.sub.2 R.sup.3, tetrazol-5-yl, SO.sub.3 H, SO.sub.2 NHR.sup.3, NO.sub.2, W, SC.sub.1-6 alkyl, SO.sub.2 C.sub.1-6 alkyl, NHSO.sub.2 R.sup.3, PO(OR.sup.3).sub.2, CONR.sup.3 R.sup.3, NR.sup.3 R.sup.3, NR.sup.3 COH, NR.sup.3 COC.sub.1-6 alkyl, NR.sup.3 CON(R.sup.3).sub.2, NR.sup.3 COW, or SO.sub.2 W;
  • R.sup.1 is C.sub.2-10 alkyl, C.sub.3-10 alkenyl, (CH.sub.2).sub.0-8 C.sub.3-6 cycloalkyl, or (CH.sub.2).sub.0-8 phenyl unsubstituted or substituted by one to three substituents selected from C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halo, OH, NO.sub.2, NR.sup.3 R.sup.3, W, CO.sub.2 R.sup.3, CN, , CONR.sup.3 R.sup.3, NR.sup.3 COH, tetrazol-5-yl, NR.sup.3 COC.sub.1-6 alkyl, NR.sup.3 COW, SC.sub.1-6 alkyl, SO.sub.2 W, or SO.sub.2 C.sub.1-6 alkyl;
  • X is a single bond, S, NR.sub.3, or O;
  • m is 0-4;
  • R.sup.2 H, C.sub.1-6 alkyl, halo, W, CHO, CH.sub.2 OH, CO.sub.2 R.sup.3, CONR.sup.3 R.sup.3, NO.sub.2, CN, NR.sup.3 R.sup.3, or phenyl;
  • each R.sup.3 independently is H or C.sub.1-6 alkyl;
  • R.sup.4 is H, C.sub.1-8 alkyl, thienyl-Y-, furyl-Y-, pyrazolyl-Y-, imidazolyl-Y-, thiazolyl-Y-, pyridyl-Y-, tetrazolyl-Y-, pyrrolyl-Y-, triazolyl-Y-, oxazolyl-Y-, isoxazolyl-Y-, or phenyl-Y-, with each aryl or heteroaryl group being unsubstituted or substituted by C.sub.1-6 alkyl, C.sub.1-6 alkoxy, halo, NR.sup.3 R.sup.3, CO.sub.2 R.sup.3, OH, NO.sub.2, SO.sub.2 NHR.sup.3, SO.sub.3 H, CONR.sup.3 R.sup.3, W, SO.sub.2 W, SC.sub.1-6 alkyl, SO.sub.2 C.sub.1-6 alkyl, NR.sup.3 COH, NR.sup.3 COW, or NR.sup.3 COC.sub.1-6 alkyl;
  • R.sup.5 is CO.sub.2 R.sup.3, CONR.sup.3 R.sup.3,, or tetrazol-5-yl;
  • W is C.sub.q F.sub.2q+1, wherein q is 1-4;
  • Y is a single bond or C.sub.1-6 alkyl which is straight or branched; and
  • n is 0-5; or a pharmaceutically acceptable salt thereof.
  • 2. A compound of claim 1 in which:
  • R is phenyl unsubstituted or substituted by one to three substituents selected from chloro, fluoro, nitro, carboxy, trifluoromethyl, methyl, methoxy, hydroxy, sulfonamido, sulfamyl, cyano, carboC.sub.1-6 alkoxy, carbamoyl, or tetrazol-5-yl;
  • R.sup.1 is C.sub.2-8 alkyl;
  • X is a single bond or S;
  • m is 0, 1 or 2;
  • R.sup.2 is hydrogen, chloro, fluoro, or trifluoromethyl;
  • each R.sup.3 is independently hydrogen or methyl;
  • R.sup.4 is hydrogen, C.sub.1-4 alkyl, phenyl (CH.sub.2).sub.0-2, or thienyl-CH.sub.2 ;
  • R.sup.5 is CO.sub.2 R.sup.3 or tetrazol-5-yl; and
  • n is 0-3; or a pharmaceutically acceptable salt thereof;
  • 3. A compound of claim 2 which is N-]{2-n-butyl-1(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]-L-(2-thienyl)alanine or a pharmaceutically acceptable salt thereof.
  • 4. A compound of claim 2 which is N-[{2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]-L-phenylalanine or a pharmaceutically acceptable salt thereof.
  • 5. A compound of claim 2 which is N-[{1-(2-chlorophenyl)methyl-2-propylthio-1H-imidazol-5-yl}methylcarbonyl]-L-phenylalanine or a pharmaceutically acceptable salt thereof
  • 6. A compound of claim 2 which is:
  • N-[{2-n butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]glycine;
  • N-[[1-(2-chlorophenyl)methyl-2-propylthio-1H-imidazol-5-yl}methylcarbonyl]-L-homophenylalanine;
  • N-[(2-n-butyl-1-chlorophenyl)methyl-1H-imidazol-5-yl}ethyl-2-carbonyl]-L-phenylalanine;
  • N-[{2-n-butyl-1-(2-chlorophenyl)methvl- 1H-imidazol-5-yl}methylcarbonyl]-L-isoleucine;
  • N-[[1-(2-chlorophen-yl)methyl-2-propylthio-1H-imidazol-5-yl}carbonyl]-D-phenylalanine; or
  • N-[[1-(2-chlorophenyl)methyl-2-propylthio-1H-imidazol-5-yl}carbonyl]glycine
  • or a pharmaceutically acceptable salt thereof.
  • 7. A pharmaceutical composition comprising a compound of claim 1 and a suitable pharmaceutical carrier.
  • 8. A pharmaceutical composition of claim 7 wherein the compound is N-[{2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]-L-(2-thienyl)alanine.
  • 9. A pharmaceutical composition of claim 7 wherein the compound is N-[{2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]-L-phenylalanine.
  • 10. A pharmaceutical composition of claim 7 wherein the compound is N-[{1-(2-chlorophenyl)methyl-2propylthio-1H-imidazol-5-yl}methylcarbonyl]-L-phenylalanine.
  • 11. A pharmaceutical composition of claim 7, wherein the compound is:
  • N-[{2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]glycine;
  • N-[{1-(2-chlorophenyl)methyl-2-propylthio-1H-imidazol-5-yl}methylcarbonyl]-L-homophenylalanine;
  • N-[{2-n-butyl-1-chlorophenyl)methyl-1H-imidazol-yl}ethyl-2-carbonyl]-L-phenylalanine;
  • N-[{2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]-L-isoleucine;
  • N-[1-(2-chlorophenyl)methyl-2-propylthio-1H-imidazol-5-yl}carbonyl]-D-phenylalanine; or
  • N-[{1-(2-chlorophenyl)methyl-2-propylthio-1H imidazol-5-yl}carbonyl]glycine.
  • 12. A method of antagonizing angiotensin II receptors in mammals which comprises administering to a subject in need thereof an effective amount of a compound of claim 1.
  • 13. A method of claim 12 wherein the compound is L-N-[[2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl)methylcarbonyl]-L (2-thienyl)alanine.
  • 14. A method of claim 12 wherein the compound is N-[(2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-methylcarbonyl]-L-phenylalanine.
  • 15. A method of claim 12 wherein the compound is N-[{1-(2-chlorophenyl)methyl-2-propylthio-1H-imidazol-yl}methylcarbonyl]-L-phenylalanine.
  • 16. A method of claim 12 wherein the compound is:
  • N-[(2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]glycine;
  • N-[{1-(2-chlorophenyl)methyl-2-propylthio-1H-imidazol-5-yl}methylcarbonyl]-L-homophenylalanine;
  • N-[{2-n-butyl-1-chlorophenyl)methyl-1H-imidazol-5-yl}ethyl-2-carbonyl]-L-phenylalanine;
  • N-[{2-n-butyl-1-(2-chlorophenyl)methyl-1H-imidazol-5-yl}methylcarbonyl]-L-isoleucine;
  • N-[{1-(2-chlorophenyl)methyl-2-propylthio-1H-imidazol-5-yl}carbonyl]-D-phenylalanine; or
  • N-[{1-(2-chlorophenyl)methyl-2 propylthio-1H-imidazol-5-yl}carbonyl]glycine.
  • 17. A method of treating hypertension in mammals which comprises administering to a subject in need thereof an effective amount of a compound of claim 1.
  • 18. A method of treating congestive heart failure in mammals which comprises administering to a subject in need thereof an effective amount of a compound of claim 1.
  • 19. A method of treating renal failure in mammals which comprises administering to a subject in need thereof an effective amount of a compound of claim 1.
  • 20. A method of treating glaucoma in mammals which comprises administerinq to a subject in need thereof an effective amount of a compound of claim 1.
BACKGROUND OF THE INVENTION

This application is a continuation-in-part of U.S. Ser. No. 07/459,015, filed Dec. 29, 1989 now abandoned. The present invention relates to new substituted 5-(alkyl)carboxamide imidazole compounds which are angiotensin II receptor antagonists and are useful in regulating hypertension induced or exacerbated by angiotensin II and in the treatment of congestive heart failure, renal failure, and glaucoma. This invention also relates to pharmaceutical compositions containing substituted 5-(alkyl)carboxamide imidazoles and methods for using these compounds as antagonists of angiotensin II, as anti hypertensive agents and and as agents for treating congestive heart failure, renal failure, and glaucoma. The class of peptide pressor hormone known as angiotensin is responsible for a vasopressor action that is implicated in the etiology of hypertension in man. Inappropriate activity of the renin angiotensin systems appears to be a key element in essential hypertension, congestive heart failure and in some forms of renal disease. In addition to a direct action on arteries and arterioles, angiotensin II (AII), being one of the most potent endogenous vasoconstrictors known, stimulates the release of aldosterone from the adrenal cortex. Therefore, the renin angiotensin system, by virtue of its participation in the control of renal sodium handling, plays an important role in cardiovascular homostasis. Interruption of the renin angiotensin system with converting enzyme inhibitors, such as captopril, has proved to be clinically useful in the treatment of hypertension and congestive heart failure (Abrams, W. B., et al., (1984), Federation Proc., 43, 1314). The most direct approach towards inhibition of the renin-angiotensin system would block the action of AII at the receptor. Compelling evidence suggests that AII also contributes to renal vasoconstriction and sodium retention that is characteristic of a number of disorders such as heart failure, cirrhosis and complications of pregnancy (Hollenberg, N. K., (1984), J. Cardiovas. Pharmacol., 6, S176). In addition, recent animal studies suggest that inhibition of the renin angiotensin system may be beneficial in halting or slowing the progression of chronic renal failure (Anderson, S., et al., (1985), J. Clin. Invest., 76, 612). Also, a recent patent application (South African Patent Application Number 87/01,653) claims that AII antagonists are useful as agents for reducing and controlling elevated intraocular pressure, especially glaucoma, in mammals. The compounds of this invention inhibit, block and antagonize the action of the hormone AII, and are therefore useful in regulating and moderating angiotensin induced hypertension, congestive heart failure, renal failure, glaucoma, and other disorders attributed to the actions of AII. When compounds of this invention are administered to mammals, the elevated blood pressure due to AII is reduced and other manifestations based on AII intercession are minimized and controlled. Compounds of this invention are also expected to exhibit diuretic activity. Recognition of the importance of blocking and inhibiting the actions of AII has stimulated other efforts to synthesize antagonists of AII. The following references have disclosed imidazole derivatives which are described as having AII blocking activity and useful as hypotensive agents. U.S. Pat. No. 4,340,598 discloses substituted imidazol-5 yl alkanoic acids, and amido and lower alkyl ester derivatives thereof, of the formula: ##STR2## wherein R.sup.1 is lower alkyl or phenylC.sub.1-2 alkyl optionally substituted with halogen or nitro; R.sup.2 is lower alkyl, cycloalkyl, or phenyl optionally substituted; one of R.sup.3 and R.sup.4 is --(CH.sub.2).sub.n COR.sup.5, where R.sup.5 is amino, lower alkoxy or hydroxy and n is 0-2, and the other of R.sup.3 and R.sup.4 is hydrogen or halogen. Examples include 1-benzyl-2-n-butyl-chloroimidazole-5-acetamide and 1-benzyl-2-n butyl-5-chloroimidazole-4-acetic acid. U.S. Pat. No. 4,355,040 discloses substituted 1-benzylimidazol-5-yl acetic acid derivatives having the formula: ##STR3## wherein R.sup.1 is lower alkyl, cycloalkyl, or phenyl optionally substituted; X.sup.1, X.sup.2 and X.sup.3 are each hydrogen, halogen, nitro, amino, lower alkyl, lower alkoxy, benzyloxy, or hydroxy; Y is halogen and R.sup.2 is hydrogen or lower alkyl. A compound specifically disclosed is 1-(2-chlorobenzyl)-2-n-butyl-4-chloroimidazole-5-acetic acid. European Patent Application 103,647 discloses substituted 1-benzyl-2-phenyl-4-chloroimidazol-5-yl acetic acid derivatives of the formula: ##STR4## wherein R is lower alkyl. Specifically, the disclosure includes 4-chloro-1-(4-methoxy-3-methylbenzyl)-2-phenyl-imidazole-5-acetic acid. European Patent Application 245,637 discloses substituted 4,5,6,7-tetrahydro-1H-imidazo[4,5 c]pyridine derivatives of the formula: ##STR5## wherein-- is a single or double bond; one of R.sup.1 is present and includes groups such as (CH.sub.2).sub.1-6 naphthyl, (CH.sub.2).sub.1-6 heteroaryl, or (CH.sub.2).sub.1-6 Ph optionally substituted; R.sup.3 includes groups such as COC.sub.1-15 alkyl or (CH.sub.2 1).sub.1-6 Ph optionally substituted; R.sub.4 includes CO.sub.2 R.sup.9, wherein R.sup.9 is hydrogen, lower alkyl or benzyl; and n is 0-3. A compound specifically disclosed is 5-[(4-nitrophenyl)acetyl]-1-(phenylmethyl)-4,5,6,7-tetrahydro-1H-imidazo[4,5-c]pyridine-6-carboxylic acid. European Patent Application 253,310 discloses substituted 1-aralkylimidazoles having the general formula: ##STR6## wherein R.sup.1 includes groups such as phenyl optionally substituted or adamantylmethyl; R.sup.2 includes groups such as hydrogen, halo, NO.sub.2, C.sub.1-4 alkyl, or C.sub.1-4 alkoxy; R.sup.3 is hydrogen, halo, C.sub.1-4 alkyl, or C.sub.1-4 alkoxy; R.sup.6 includes groups such as C.sub.2-10 alkyl, C.sub.3-10 alkenyl, C.sub.3-8 cycloalkyl, benzyl optionally substituted or Z(CH.sub.2).sub.1-5 -R.sup.5, wherein Z is O or S and R.sup.5 is hydrogen, C.sub.1-6 alkyl, C.sub.3-6 cycloalkyl or alkenyl; R.sup.7 is hydrogen, halo, NO.sub.2, CF.sub.3, or CN, and R.sup.8 includes groups such as C.sub.1-10 alkanoic acids, esters and amides and alkyl N-alkyl carbamates. Examples include 2-n-butyl-5-chloro-1-(4-nitrobenzyl)imidazole-4-acetic acid and 1-[(2'-carboxybiphenyl-4-yl)methyl]-2-n-butyl-4-chloro-5-(dimethylcarbamoyl)imidazole. Great Britain Patent 1,341,375 describes a series of substituted imidazoles which are useful due to their activity at H 1, H 2 and/or other histamine receptors. The substituted aminoalkylimidazole compounds disclosed therein are of the formula: ##STR7## wherein A is C.sub.1-6 alkyl, optionally substituted by alkyl or aralkyl; R is a substituted or unsubstituted alkyl, aryl or aralkyl group; R.sub.1 is hydrogen alkyl, phenyl, phenylalkyl or imidazolylalkyl; R.sub.20 is hydrogen, alkyl optionally substituted by halo, OH, CN, CO.sub.2 H, NH.sub.2 or CONH.sub.2 ; or COY wherein Y is R.sub.11 O or R.sub.11 NH and R.sub.11 is a substitued or unsubstituted alkyl, aryl, aralkyl or amidino qroup; and X is 0-3. Examples include N-(2-(4(5)-imidazolyl)ethyl)glycine and 1-benzyl-5-(2-aminoethyl) imidazole.

US Referenced Citations (2)
Number Name Date Kind
4340598 Furukawa et al. Jul 1982
4355040 Furukawa et al. Oct 1982
Foreign Referenced Citations (5)
Number Date Country
0103647 Mar 1984 EPX
0245637 Nov 1987 EPX
0253310 Jan 1988 EPX
0324377 Jul 1989 EPX
1341375 Dec 1973 GBX
Non-Patent Literature Citations (5)
Entry
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Haber et al.; J. Cardiovas. Pharmacol. (1987) pp. 554-558.
Plattner et al.; J. Med. Chem.; 31; pp. 2277-2288, (1988).
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Continuation in Parts (1)
Number Date Country
Parent 459051 Dec 1989