WO2005060971A1 - Treatment of reflux-related diseases - Google Patents

Treatment of reflux-related diseases Download PDF

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Publication number
WO2005060971A1
WO2005060971A1 PCT/US2004/041132 US2004041132W WO2005060971A1 WO 2005060971 A1 WO2005060971 A1 WO 2005060971A1 US 2004041132 W US2004041132 W US 2004041132W WO 2005060971 A1 WO2005060971 A1 WO 2005060971A1
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Prior art keywords
oxadiazole
pyridyl
cyano
pyrid
phenyl
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PCT/US2004/041132
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French (fr)
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Anders Lehmann
Jan Mattsson
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Astrazeneca Ab
Nps Pharmaceuticals, Inc.
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Publication of WO2005060971A1 publication Critical patent/WO2005060971A1/en

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
    • A61K31/4439—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a five-membered ring with nitrogen as a ring hetero atom, e.g. omeprazole
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44—Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4427—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems
    • A61K31/444—Non condensed pyridines; Hydrogenated derivatives thereof containing further heterocyclic ring systems containing a six-membered ring with nitrogen as a ring heteroatom, e.g. amrinone
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/47—Quinolines; Isoquinolines
    • A61K31/4709—Non-condensed quinolines and containing further heterocyclic rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00—Medicinal preparations containing organic active ingredients
    • A61K31/33—Heterocyclic compounds
    • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with two or more nitrogen atoms as the only ring heteroatoms, e.g. piperazine or tetrazines
    • A61K31/505—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/506—Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim not condensed and containing further heterocyclic rings
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00—Drugs for disorders of the respiratory system
    • A61P11/04—Drugs for disorders of the respiratory system for throat disorders
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00—Drugs for disorders of the respiratory system
    • A61P11/06—Antiasthmatics

Definitions

  • the present invention relates to the use of certain compounds for the inhibition of transient lower esophageal sphincter relaxations.
  • a further aspect of the invention is directed to the use of certain compounds for the treatment of gastro-esophageal reflux disease.
  • the compounds useful in accordance with the present invention have been described in WO02/068417 A2.
  • the compounds have been described as being useful in the treatment of various CNS disorders such as senile dementia, Alzheimer's disease and migraine.
  • the lower esophageal sphincter (LES) is prone to relaxing intermittently. As a consequence, fluid from the stomach can pass into the esophagus since the mechanical barrier is temporarily lost at such times, an event hereinafter referred to as "reflux".
  • Gastro-esophageal reflux disease is the most prevalent upper gastrointestinal tract disease. Current pharmacotherapy aims at reducing gastric acid secretion, or at neutralizing acid in the esophagus. The major mechanism behind reflux has been considered to depend on a hypotonic lower esophageal sphincter. However, e.g. Holloway & Dent (1990) Gastroenterol. Clin. N. Amer. 19, pp. 517-535, has shown that most reflux episodes occur during transient lower esophageal sphincter relaxations (TLESRs), i.e. relaxations not . triggered by swallows. It has also been shown that gastric acid secretion usually is normal in patients with GERD.
  • TLESRs transient lower esophageal sphincter relaxations
  • the object of the present invention was to find a new way for the inhibition of transient lower esophageal sphincter relaxations (TLESRs), thereby preventing reflux. More particularly the object of the invention was to find a new way of treating gastro-esophageal reflux disease (GERD), as well as a new way for the treatment of regurgitation.
  • GENERAL gastro-esophageal reflux disease
  • the present invention is directed to the use of compounds of the general formula III for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs):
  • Ar 1 is an optionally substituted heterocyclic moiety and Ar 2 is an optionally substituted carbocyclic moiety.
  • the L moiety is a group that not only covalently binds to the Ar and Ar moieties and facilitates adoption of the correct spatial orientation of Ar and Ar 2 , but may itself interact with a protein to allow receptor binding.
  • the Ar 1 moiety is generally defined as a heterocyclic moiety, and the Ar 2 moiety is generally defined as a carbocylic moiety.
  • Ar 1 and Ar 2 can be monocyclic to or fused bicyclic groups.
  • Ar 2 is preferably defined as an aryl or alkaryl moiety.
  • Ar 1 is preferably defined as a heterocyclic, heteroaryl or heteroarylalkyl moiety.
  • the ring systems encompassed by Ar 1 can contain up to four heteroatoms, independently selected from the group consisting of N, S, and O.
  • Ar 1 is a heteroaryl ring or ring system, it preferably contains one or two heteroatoms. At least one of the heteroatoms preferably is nitrogen (N).
  • the heterocyclic or fused heterocylic moiety preferably is selected from the group consisting of quinolyl, quinazolyl, quinoxalyl, 2-pyrimidyl, 4-pyrimidyl, 5-pyrimidyl, 2-pyridyl, 3-pyridyl, 4- pyridyl, and pyrazyl.
  • Monocyclic Ar 1 groups include, but are not limited to: thiazoyl, furyl, pyranyl, 2H- pyrrolyl, thienyl, pyrroyl, imidazoyl, pyrazoyl, pyridyl, pyrazinyl, pyrimidinyl, and pyridazinyl moieties.
  • Monocyclic Ar 2 group include but are not limited to phenyl and benzyl.
  • Fused bicyclic Ar 2 include, but are not limited to, naphthyl, fluorenyl, anthrenyl, indenyl, phenanthrenyl, and benzonaphthenyl.
  • Ar 1 groups include, but are not limited to: benzothiazole, benzimidazole, 3H-indolyl, indolyl, indazoyl, purinyl, quinolizinyl, isoquinolyl, quinolyl, phthalizinyl, naphthyridinyl, quinazolinyl, cinnolinyl, isothiazolyl, quinoxalinyl indolizinyl, isoindolyl, benzothienyl, benzofuranyl, isobenzofuranyl, and chromenyl moieties.
  • Ar 1 preferably is a 2-pyridyl moiety.
  • Ar 2 preferably is a substituted phenyl moiety.
  • the Ar 1 and Ar 2 moieties optionally may independently be substituted with one or more moieties selected from the group consisting of halogen, C ⁇ -C 3 alkyl, C ⁇ -C 3 -O-alkyl, -OH, - OCF 3 , -COOR, -COR, -SOR, -SO 2 NRR', -NRR', -CN, -CF 3 , -CONRR', -A-(CH 2 ) n -NRR', wherein A is C, O, N, SO, SO 2 , and R and R' are independently selected from the group consisting of C ⁇ -C 3 alkyl, H, cycloalkyl, heterocycloalkyl, aryl, and n is 1, 2, 3, or 4.
  • the L moiety is generally made up of 1-14 atoms. L can be independently selected from the group of atoms: C, H, N, O and S.
  • the L moiety can thus be made of a non-cyclic moiety.
  • the atomic arrangement in the L moiety can also be made to form a five-membered ring.
  • Several examples of these are cyclopentane, cyclopentadiene, furan, thiofuran, pyrrolidine, pyrrole, 2-imidazoline, 3-imidazoline, 4-imidazoline, imidazole, pyrazoline, pyrazolidine, imidazolidine, oxazole, 2-oxazole, thiazole, isoxazole, isothiazole, lH-l,2,4-triazole, 1H- 1,2,3-triazole, 1,2,4-oxathiazole, 1,3,4-oxathiazole, 1,4,2-dioxazole, 1,4,2-oxathiazole, 1,2,4-oxadiazole, 1,2,4-thiadiazole, 1,2,5-oxadiazole, 1,2,5-thiadiazole, 1,3,4-oxadiazole, 1,3,4-
  • the atomic arrangement in the L moiety can also be made to form a six-membered ring.
  • Several examples of these are cyclohexane, piperidine, tetrahydropyridine, 1,4- dihydropyridine, pyridine, benzene, tetrahydropyran, 3,4 dihydro-2H-pyran, 2H-pyran, 4H- pyran, tetrahydrothiopyran, 3,4-dihydro-2H-thiopyran, 2H-thiin, 4H-thiopyran, orpholine, thiomorpholine, piperazine, pyridazine, pyrimidine, pyrazine, 1,2,4-triazine, 1,2,3-triazine, 1,3,5-triazine, and 1,2,4,5-tetrazine, for example.
  • the atomic arrangement in the L moiety can also be made to form a five- or six-membered ring containing one or more carbonyl groups.
  • Several examples of these are 2-azetidinone, l,2-diazetidin-3-one, cyclopentanone, 2-cyclopentenone, 2-pyrrolidinone, 3-pyrrolin-2- one, succinimide, maleimide, 3-pyrazolidinone, 2-imidazolidone, 4-imidazolin-2-one, 2H- imidazol-2-one, 4-imidazolinone, 3-pyrazolin-5-one, hydantoin, lH-imidazole-2,5-dione, 2-oxazoline-4-one, 2-oxazolidinone, 3-oxazolin-5-one, 3(2H)-isoxazolone, 2,4- oxazolidinedione, l,2,4-triazoline-3,5-dione, 2,4-d
  • L comprises a heterocyclic 5-membered ring system.
  • L is an oxazole or an 1,2,4-oxadiazole ring.
  • the L moiety may have either one of two possible orientations with respect to the Ar 1 and Ar 2 groups.
  • the invention relates to compounds having the configuration 4-(Ar 1 )-2-(Ar 2 )-oxazole or 3- (Ar 1 )-5-(Ar 2 )-l ,2,4-oxadiazole.
  • One aspect of the invention is the use of compounds of Formula I for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs):
  • variables X, Y and Z are independently selected from N, O, S and substituted carbon, designated CRi, wherein R is as defined below. At least one of X, Y or Z must be a heteroatom. In a preferred embodiment of the invention more than one of X, Y and Z are heteroatoms. In one aspect of the invention two of X, Y and Z are heteroatoms. While in another aspect of the invention all three of X, Y and Z are heteroatoms. In one embodiment of the invention at least one of X, Y and Z is N. In yet another embodiment of the invention two of X, Y and Z are N. In a further embodiment of the invention, X is N, Y is N and Z is O.
  • the groups Ari and Ar 2 are independently selected from aryl and heteroaryl.
  • Particular embodiments of the invention include those wherein Ar! and Ar 2 are independently selected from 5- and 6-member aryl and heteroaryl rings.
  • Ari and Ar are selected from 6- member aryl and heteroaryl rings.
  • Still more particular embodiments of the invention include those where Ari and Ar 2 are independently selected from phenyl, pyridyl, furanyl, thienyl, pyrazinyl, pyrimidinyl, pyridazinyl, pyrrolyl, pyrazolyl, imidazolyl, triazolyl, thiazolyl.
  • Ari is selected from phenyl and pyridyl. In a further embodiment of the invention, Ari is selected from pyridyl. In yet another embodiment, Ari is selected from 2-pyridyl. In another embodiment, Ari is selected from phenyl and pyridyl. In one embodiment, Ar! is phenyl. In another embodiment, Ar 2 is 3- pyridyl.
  • At least one of Ari and Ar 2 is substituted with at least one substituent G.
  • Ar 2 is substituted with G.
  • G is selected from the group consisting of: haloalkyl; heteroaryl; cycloalkene; alkenyl; alkynyl; A-alkenyl; A-alkynyl; alkyloxy; A-alkyloxy; R 2 OR 3 ; R 2 OC(O)R 3 ; (CH 2 ) m -NR 2 R 3 ; -OCH 2 CH(Cl)CH 2 Cl; and substituted aryl, wherein R 2 and R 3 are as defined above.
  • G is haloalkyl
  • G is heteroaryl wherein heteroaryl is selected from the group consisting of: pyridyl; furanyl; thienyl; pyrazinyl; pyrimidinyl; pyridazinyl; pyrrolyl; pyrazolyl; imidazolyl; triazolyl; and thiazolyl.
  • G is selected from the group consisting of: pyridyl; furanyl; thienyl; and pyrimidinyl.
  • G is selected from the group consisting of: 2-pyridyl; 3- pyridyl; 4-pyridyl; 3-thienyl; 5-pyrimidinyl; and 3-furanyl.
  • G is cycloalkene.
  • G is selected from 5- and 6-member carbocyclic and heterocyclic rings containing one or more double bonds.
  • G is a 6-member heterocyle containing one double bond.
  • G is 3- (1,2,5,6-tetrahydropyridyl).
  • G is N-substituted 3-(l ,4,5,6 tetrahydropyridyl, for example 3-N-benzyl-(l, 2,5,6- tetrahydropyridyl).
  • A is selected from the group consisting of: CH 2 ; O; NH; S; SO; SO 2 ; NSO 2 ; OSO 2 ; and -C(NR 2 )NR 3 .
  • A is selected from O and NH.
  • G is selected from the group consisting of: alkyloxy; and A-alkyloxy; wherein alkyloxy is a straight or branched to chain alkyl radical substituted with a hydroxy group and A is a linker.
  • the alkyloxy group is linked to Ari or Ar 2 through A, and A is selected from the group consisting of: CH 2 ; O; NH; S; SO; SO 2 ; NSO 2 ; OSO 2 ; and -C(NR 2 )NR 3 .
  • A is O
  • alkyloxy is selected from hydroxymethyl, hydroxyethyl, and hydroxypropyl.
  • G is - OCH 2 CH 2 CH 2 OH.
  • G is (CH 2 ) m -NR 2 R 3 , wherein m is 0 or 1.
  • G is (CH 2 ) m -NR 2 R 3 , and R 2 and R 3 are independently selected from H, alkyl, alkyloxy, alkylamine, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, alkylaryl, alkylheteroaryl, haloaryl, alkyloxyaryl, alkenylaryl, alkenyloxyaryl, haloheteroaryl.
  • R 2 and R 3 are independently selected from H and alkyl.
  • R 2 and R 3 are independently selected from H and methyl.
  • G is aryl substituted with a substituent R 4 .
  • the aryl group is selected from the group consisting of: phenyl; naphthyl; anthrenyl; and fluorenyl.
  • the substituent R is selected from the group consisting of: halo; -OR 2 ; -SR 2 ; -SOR 2 ; -SO 2 R 2 ; -SO 2 NR 2 R 3 ; -R 2 OR 3 ; -R 2 SR 3 ; -OCOR 2 ; -OCONR 2 R 3 ; - NR 2 COR 3 ;-NR 2 CO 2 R 3 ; -CN; -NO 2 ; -OH;-R 2 OH; -C(NR 2 )NR 3 ; -CO 2 R 2 R 3 ;-CONR 2 R 3 ;- C(O)R 2 ; -CH(OR 2 )R 3 ; -CH 2 (OR 2 ); -A-(CH 2 ) m -NR 2 R 3 ; -NR 2 R 3 ; aryl; aralkyl; heteroaryl; and heteroaralkyl.
  • aryl is phenyl.
  • R is selected from the group consisting of halo; NR 2 R 3 ; alkoxy; and CN.
  • R 4 is selected from the group consisting of F; NH 2 ; methoxy.
  • each of Ari, Ar 2 , and G is optionally further substituted with one or more substituents selected from R 2 and R 4 .
  • Ari is further substituted with a substituent selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; halo; -OR 2 ; -SR 2 ; -SOR 2 ; - SO 2 R 2 ; -SO 2 NR 2 R 3 ; -R 2 OR 3 ; R 2 SR 3 ; -OCOR 2 ; -OCONR 2 R 3 ; -NR 2 COR 3 ; -NR 2 CO 2 R 3 ; -CN; -NO 2 ; -C(NR 2 )NR 3 ; -CO 2 R 2 R 3 ; -CONR 2 R 3 ; -C(O)R 2 ; -CH(OR 2 )R 3 ; -CH 2 (OR 2 ); -CONR 2 R 3 ; -C(O
  • an is 2-pyridyl
  • the further substituent is located at the 5-position of Ari.
  • Ari is 5-fluoro- 2- ⁇ yridyl.
  • Ari is 5-cyano-2-pyridyl.
  • Ar 2 is further substituted with one or more substituents selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkyl amine; halo; -OR 2 ; -SR 2 ; -SOR 2 ; -SO 2 R 2 ; -SO 2 NR 2 R 3 ; -R 2 OR 3 ; -R 2 SR 3 ; -OCOR 2 ; -OCON- R 2 R 3 ; -NR 2 COR 3 ; -NR 2 CO 2 R 3 ; -CN; -NO 2 ; -C(NR 2 )NR 3 ; -CO 2 R 2 R 3 ; -CONR 2 R 3 ; -C(O)R 2 ; -CH(OR 2 )R 3 ; -CH 2 (OR 2 ); -A-(CH 2 ) m -NR 2 R 3 ; -NR 2 R 3 ; aryl;
  • Ar 2 is further substituted with one or more substituents selected from the group consisting of: alkyl; alkoxy; alkyloxy; hydroxy; halo; cyano; and nitro.
  • Ar 2 has a further substituent selected from the group consisting of: cyano; fluoro; chloro; bromo; iodo; and methoxy.
  • Ar 2 is phenyl or 3-pyridyl, and is substituted with the substituent G at the meta position and a further substituent at the other meta position.
  • the substituent G is optionally further substituted with one or more substituents selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; halo; -OR 2 ; -SR 2 ; -SOR 2 ; SO 2 R 2 ; -SO 2 NR 2 R 3 ; -R 2 OR 3 ; -R 2 SR 3 ; - OCOR 2 ; -OCONR 2 R 3 ; -NR 2 COR 3 ; -NR 2 CO 2 R 3 ; -CN; -NO 2 ; -C(NR 2 )NR 3 ; -CO 2 R 2 R 3 ; - CONR 2 R 3 ; -C(O)R 2 ; -CH(OR 2 )
  • G is -OCH 2 CH 2 CH 2 OH, and is further substituted with chloro, to give -OCH 2 CH(Cl)CH 2 OH.
  • specific compounds of formula I include: 3-(2-pyridyl)-5- (3-methoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridy ⁇ )-5-(3,5-dichlorophenyl)-l,2,4 ⁇ oxadiazole, 3-(2-pyridyl)-5-(3-chloro ⁇ henyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2- chlorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-[3-(trifluoromethyl)phenyl]-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-methylphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(l- naphthyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-(
  • the compounds of the formula I include: 3-(5- Methyl-pyrid-2-yl)-5-(3-cyanophenyl)-l,2,4-oxadiazole, 3-(5-Cyano-pyrid-2-yl)-5 ⁇ (3- cyanophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-bromo-2-methoxyphenyl)- 1,2,4- oxadiazole, 3-(2-Pyridyl)-5-(5-bromo-2-fluorophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5- (5-cyano-2-fluorophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-bromopyrid-3-yl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-(5-bro
  • the compounds of the formula I include: 3-(2- Pyridyl)-5-(3-allyloxy-5-(methoxycarbonyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3- N,N-dimethylaminophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-(4- pyridyl)phenyl)-l ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-methoxy-5-(4-pyridyl)phenyl-l ,2,4- oxadiazole, 3-(2-pyridyl)-5-(2-fluoro-5-(4-pyridyl)phenyl)-l,2,4 ⁇ oxadiazole, 3-(2-Pyridyl)-5-(3-fluoro-5-(4-pyridid
  • the compounds of the formula I include: 3-(2-pyridyl)-5-(3-fluorophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2,3-dimethoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-phenoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-benzoylphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-chloro-5- (trifluoromethyl)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3,4,5-trifluorophenyl)-l,2,4- oxadiazole, 3-(3-methoxyphenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(3-me
  • the present invention is further directed to the use of compounds of the Formula II for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs):
  • X 2 is selected from N and C, and Y 2 is selected from the group consisting of N; O; S; and CR 5 , and at least one of X 2 and Y 2 is a heteroatom;
  • a five member ring containing two variables X 2 , and Y 2 . There are attached to this five member ring two substituents, Ar 3 and Ar 4 .
  • the five member ring may contain 0, 1, or 2 double bonds as denoted by the dotted lines in Formula II. In one embodiment of the invention, the five member ring has two double bonds.
  • variable X is selected from the group consisting of: N and C
  • variable Y 2 is selected from the group consisting of: N; O; S; and CR 5 wherein at least one of X 2 , and Y 2 must be a heteroatom.
  • both X 2 and Y 2 are heteroatoms.
  • X 2 is N.
  • Y 2 is N.
  • X 2 and Y 2 are both N.
  • the group Ar 3 and Ar 4 are independently selected from the group consisting of aryl and heteroaryl.
  • Particular embodiments of the invention include those wherein Ar 3 and Ar are independently selected from 5- and 6- member aryl and heteroaryl rings.
  • Ar 3 and Ar 4 are selected from 6-member aryl and heteroaryl rings.
  • Still more particular embodiments of the invention include those where Ar 3 and Ar 4 are independently selected from phenyl, pyridyl, furanyl, thienyl, pyrazinyl, pyrimidinyl, pyridazinyl, pyrrolyl, pyrazolyl, imidazolyl, triazolyl, and thiazolyl.
  • Ar 3 and Ar are independently selected from phenyl and pyridyl.
  • one of Ar 3 and Ar is phenyl and one is pyridyl.
  • Ar 3 and Ar are optionally substituted with one or more substituents G 2 , wherein G 2 is selected from the group consisting of: haloalkyl; heteroaryl; cycloalkene; alkenyl; alkynyl; A-alkenyl; A-alkynyl; alkyloxy; A-alkyloxy; -R 6 OR 7 ; -R 6 OC(O)R 7 ; (CH 2 ) m -NR 6 R 7 ; -OCH 2 CH(Cl)CHCl; and substituted aryl wherein the aryl substituent is R 8 .
  • G 2 is selected from the group consisting of: haloalkyl; heteroaryl; cycloalkene; alkenyl; alkynyl; A-alkenyl; A-alkynyl; alkyloxy; A-alkyloxy; -R 6 OR 7 ; -R 6 OC(O)R 7 ; (CH 2 )
  • G 2 is selected from the group consisting of: A-alkenyl; Alkynyl; and A-alkyloxy, and A is selected from the group consisting of: CH ; O; NH; S; SO; SO 2 ; OSO 2 ; NSO 2 : and -C(NR 6 )NR 7 .
  • G 2 is (CH 2 ) m - NR 6 R 7 .
  • G 2 is substituted aryl and the substituent R 8 is selected from the group consisting of: halo; -OR 6 ; -SR 6 ; -SOR 6 ; -SO 2 R 6 ; -SO 2 NReR 7 ; - R 6 OR 7 R 6 SR 7 ; -OCOR 6 ; -OCONR 6 R 7 ; -NR 6 COR 7 ; -NR 6 CO 2 R 7 ; -CN; -NO 2 ; -C(NR 6 )NR 7 ; -CO2R 6 R 7 ; -CONR 6 R 7 ; -C(O)R 6 ; -CH(OR 6 )R 7 ; -CH 2 (OR 6 ); -A-(CH 2 ) m -NR 6 R 7 ; -NR 6 R 7 ; aryl; aralkyl; heteroaryl; and heteroaralkyl.
  • each of Ar 3 and Ar 4 and G 2 is further substituted with one or more substituents selected from R 6 , and R 8 .
  • each of Ar 3 and Ar is independently further substituted with one or more substituents selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; halo; -OR 6 ; -SR 6 ; -SOR 6 ; -SO 2 R 6 ; -SO 2 NR 6 R 6 ; R 6 OR 7 R 6 SR 7 ; -OCOR 6 ; - OCONR 6 R 7 ; -NR 6 COR 7 ; -NR 6 CO 2 R 7 ; -CN; -NO 2 ; -C(NR 6 )NR 7 ; -CO 2 R 6 R 7 ;-CONR 6 R 7 ; - C(O)R 6 ;-CH(OR 6 )R 7 ;-CH 2 (OR 6 );
  • Ar 3 and Ar 4 are independently substituted with a substituent selected from the group consisting of halo and cyano.
  • the compounds of formula II include: 4-(3-Cyanophenyl)-l-(2-pyridyl)-lH- imidazole, l-(3-Cyanophenyl)-4-(2-pyridyl)-l H-imidazole.
  • alkyl refers to straight- and branched-chain alkyl radicals containing from 1, 2, 3, 4, 5, or 6 carbon atoms and includes methyl, ethyl and the like.
  • aryl refers to a monocyclic aromatic group such as phenyl and the like or a benzo-fused aromatic group such as indanyl, naphthyl, fluorenyl and the like.
  • heteroaryl refers to aromatic compounds containing one or more hetero atoms such as pyridyl, furyl, thienyl and the like or a benzofused aromatic so containing one or more heteroatoms such as indolyl, quinolinyl and the like.
  • heteroatom refers to non-carbon atoms such as N, O, S and the like.
  • cycloalkyl refers to a carbocyclic ring containing of 3, 4, 5, 6, 7, or 8 carbons and includes cyclopropyl, cyclohexyl and the like.
  • heterocycloalkyl refers to 3, 4, 5, 6, 7, or 8 membered rings containing 1, 2, or 3 heteroatoms selected from the group consisting of N, S and O and includes piperidine, piperizine, pyran and the like.
  • halo refers to the halogen radicals fluoro, chloro, bromo, and iodo.
  • haloalkyl refers to an alkyl substituted with one or more halogens, such as bromoethyl, chloromethyl, trichloromethyl and the like.
  • alkoxy refers to a straight- or branched- chain alkoxy containing 1, 2, 3, 4, 5 or 6 carbon atoms and includes methoxy, ethoxy and the like.
  • alkyloxy refers to an alkyl substituted with a hydroxy group such as hydroxyethyl, hydroxypropyl and the like.
  • alkenyl refers to a straight or branched- chain alkyl containing one or more double bonds such as propenyl, vinyl and the like.
  • aralkyl refers to an alkyl substituted with an aryl such as benzyl, phenethyl and the like.
  • alkylamine refers to an alkyl substituted with an amine such as aminomethyl, or dimethylaminoethyl and the like.
  • alkylaryl refers to an aryl substituted with an alkyl group such as methylphenyl, isopropylnaphthyl and the like.
  • alkylheteroaryl refers to a heteroaryl substituted with an alkyl group. Particular examples include methylpyridine, ethylfuran, and the like.
  • alkynyl refers to a straight or branched-chain alkyl containing one or more double bonds such as ethynyl, propynyl, vinyl and the like.
  • haloaryl refers to an aryl substituted with a halogen such as bromophenyl, chlorophenyl and the like.
  • alkyloxyaryl refers to an aryl substituted with an alkyloxy group such as hydroxyethylphenyl and the like.
  • alkenyloxyaryl refers to an aryl substituted with an alkenyloxy group such as propenyloxy phenyl and the like.
  • haloheteroaryl refers to a heteroaryl substituted with a halogen.
  • a particular example is 4-chloropyridine.
  • cycloalkene refers to a 3, 4, 5, 6, 7, or 8-member ring, which contains one or more double bonds, and may contain a heteroatom. Particular examples include cyclohexene, tetrahydropyridine and the like.
  • alkenylaryl refers to an aryl substituted with an alkenyl group.
  • a particular example is vinyl benzene.
  • the present invention is directed to the use of a compound of formula I, II or III for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs).
  • TLESRs transient lower esophageal sphincter relaxations
  • a further aspect of the invention is the use of a compound formula I, II or III for the manufacture of a medicament for the prevention of reflux.
  • Still a further aspect of the invention is the use of a compound of formula I, II or III for the manufacture of a medicament for the treatment of gastro-esophageal reflux disease (GERD).
  • GFD gastro-esophageal reflux disease
  • Effective prevention of regurgitation would be an important way of preventing, as well as curing lung disease due to aspiration of regurgitated gastric contents, and for managing failure to thrive.
  • a further aspect of the invention is the use of a compound of formula I, II or HI for the manufacture of a medicament for the treatment of regurgitation.
  • Still a further aspect of the invention is the use of a compound of formula I, II or III for the manufacture of a medicament for the treatment or prevention of lung disease.
  • Another aspect of the invention is the use of a compound of formula I, II or III for the manufacture of a medicament for the management of failure to thrive.
  • Still a further aspect of the invention is the use of a compound of formula I, II or III for the manufacture of a medicament for the treatment or prevention of asthma, such as reflux-related asthma.
  • Another aspect of the invention is the use of a compound of formula I, LT or III for the manufacture of a medicament for the treatment or prevention of chronic laryngitis.
  • a further aspect of the present invention is a method for the inhibition of transient lower esophageal sphincter relaxations (TLESRs), whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such inhibition.
  • TLESRs transient lower esophageal sphincter relaxations
  • Another aspect of the invention is a method for the prevention of reflux, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such prevention.
  • Still a further aspect of the invention is a method for the treatment of gastro-esophageal reflux disease (GERD), whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or HI is administered to a subject in need of such treatment.
  • GSD gastro-esophageal reflux disease
  • Yet another aspect of the invention is a method for the treatment of regurgitation, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such treatment.
  • Still a further aspect of the invention is a method for the treatment or prevention of asthma, such as reflux-related asthma, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or HI is administered to a subject in need of such treatment.
  • Yet another aspect of the invention is a method for the treatment of chronic laryngitis, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or LU is administered to a subject in need of such treatment.
  • Still a further aspect of the invention is a method for the treatment or inhibition of lung disease, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such treatment.
  • Still a further aspect of the invention is a method for the management of failure to thrive, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such treatment.
  • a further aspect of the invention is the use of a compound according to formula I, II or HI for the manufacture of a medicament for the treatment or prevention of functional gastrointestinal disorders, such as functional dyspepsia (FD).
  • FD functional dyspepsia
  • Yet another aspect of the invention is the use of a compound according to formula II for the manufacture of a medicament for the treatment or prevention of irritable bowel syndrome (BBS), such as constipation predominant LBS, diarrhea predominant IBS or alternating bowel movement predominant IB S .
  • BBS irritable bowel syndrome
  • TLESR transient lower esophageal sphincter relaxations
  • GFD gastro-esophageal reflux disease
  • the compounds of formula I, II or III are in accordance with the present invention suitably formulated into pharmaceutical formulations for oral administration. Also rectal, parenteral or any other route of administration may be contemplated to the skilled man in the art of formulations.
  • the compounds of formula I, H or HI are formulated with at least one pharmaceutically and pharmacologically acceptable carrier or adjuvant.
  • the carrier may be in the form of a solid, semi-solid or liquid diluent.
  • the compound of formula I, II or HI to be formulated is mixed with solid, powdered ingredients such as lactose, saccharose, sorbitol, mannitol, starch, amylopectin, cellulose derivatives, gelatin, or another suitable ingredient, as well as with disintegrating agents and lubricating agents such as magnesium stearate, calcium stearate, sodium stearyl fumarate and polyethylene glycol waxes.
  • disintegrating agents and lubricating agents such as magnesium stearate, calcium stearate, sodium stearyl fumarate and polyethylene glycol waxes.
  • Soft gelatine capsules may be prepared with capsules containing a mixture of the active compound or compounds of the invention, vegetable oil, fat, or other suitable vehicle for soft gelatine capsules.
  • Hard gelatine capsules may contain the active compound in combination with solid powdered ingredients such as lactose, saccharose, sorbitol, mannitol, potato starch, corn starch, amylopectin, cellulose derivatives or gelatine.
  • solid powdered ingredients such as lactose, saccharose, sorbitol, mannitol, potato starch, corn starch, amylopectin, cellulose derivatives or gelatine.
  • Dosage units for rectal administration may be prepared (i) in the form of suppositories which contain the active substance(s) mixed with a neutral fat base; (ii) in the form of a gelatine rectal capsule which contains the active substance in a mixture with a vegetable oil, paraffin oil, or other suitable vehicle for gelatine rectal capsules; (iii) in the form of a ready-made micro enema; or (iv) in the form of a dry micro enema formulation to be reconstituted in a suitable solvent just prior to administration.
  • Liquid preparations for oral administration may be prepared in the form of syrups or suspensions, e.g. solutions or suspensions, containing the active compound and the remainder of the formulation consisting of sugar or sugar alcohols, and a mixture of ethanol, water, glycerol, propylene glycol and polyethylene glycol. If desired, such liquid preparations may contain colouring agents, flavouring agents, saccharine and carboxymethyl cellulose or other thickening agent.
  • Liquid preparations for oral administration may also be prepared in the form of a dry powder to be reconstituted with a suitable solvent prior to use.
  • Solutions for parenteral administration may be prepared as a solution of a compound of the invention in a pharmaceutically acceptable solvent. These solutions may also contain stabilizing ingredients and/or buffering ingredients and are dispensed into unit doses in the form of ampoules or vials. Solutions for parenteral administration may also be prepared as a dry preparation to be reconstituted with a suitable solvent extemporaneously before use.
  • the compound of formula I, ⁇ or IH may be administered once or twice daily, depending on the severity of the patient' s condition.
  • a multilumen sleeve/sidehole assembly (Dentsleeve, Sydney, South Australia) is introduced through the esophagostomy to measure gastric, lower esophageal sphincter (LES) and esophageal pressures.
  • the assembly is perfused with water using a low-compliance manometric perfusion pump (Dentsleeve, Sydney, South Australia).
  • An air-perfused tube is passed in the oral direction to measure swallows, and an antimony electrode monitored pH, 3 cm above the LES. All signals are amplified and acquired on a personal computer at 10 Hz.
  • placebo (0.9% NaCl) or test compound is administered intravenously (i.v., 0.5 ml/kg) in a foreleg vein.
  • a nutrient meal (10% peptone, 5% D-glucose, 5% Intralipid, pH 3.0) is infused into the stomach through the central lumen of the assembly at 100 ml/min to a final volume of 30 ml/leg.
  • air is insufflated at 40 ml/min.
  • TLESRs In an alternative model (Barostat model), the infusion of the nutrient meal is followed by air infusion at a rate of 500 ml/min until a intragastric pressure of lO ⁇ l mmHg is obtained. The pressure is then maintained at this level throughout the experiment using the infusion pump for further air infusion or for venting air from the stomach. The experimental time from start of nutrient infusion to end of air insufflation is 45 min. The procedure has been validated as a reliable means of triggering TLESRs. TLESRs is defined as a decrease in lower esophageal sphincter pressure (with reference to intragastric pressure) at a rate of >1 mmHg/s.
  • the relaxation should not be preceded by a pharyngeal signal ⁇ 2s before its onset in which case the relaxation is classified as swallow- induced.
  • the pressure difference between the LES and the stomach should be less than 2 mmHg, and the duration of the complete relaxation longer than 1 s.

Abstract

The present invention relates to the use of certain compounds for the inhibition of transient lower esophageal sphincter relaxations. A further aspect of the invention is directed to the use of certain compounds for the treatment of gastro-esophageal reflux disease, regurgitation, asthma, laryngitis, lung disease and for managing failure.

Description

NOVEL TREATMENT OF GERD π
Field of the invention
The present invention relates to the use of certain compounds for the inhibition of transient lower esophageal sphincter relaxations. A further aspect of the invention is directed to the use of certain compounds for the treatment of gastro-esophageal reflux disease.
Background of the invention
The compounds useful in accordance with the present invention have been described in WO02/068417 A2. The compounds have been described as being useful in the treatment of various CNS disorders such as senile dementia, Alzheimer's disease and migraine.
The lower esophageal sphincter (LES) is prone to relaxing intermittently. As a consequence, fluid from the stomach can pass into the esophagus since the mechanical barrier is temporarily lost at such times, an event hereinafter referred to as "reflux".
Gastro-esophageal reflux disease (GERD) is the most prevalent upper gastrointestinal tract disease. Current pharmacotherapy aims at reducing gastric acid secretion, or at neutralizing acid in the esophagus. The major mechanism behind reflux has been considered to depend on a hypotonic lower esophageal sphincter. However, e.g. Holloway & Dent (1990) Gastroenterol. Clin. N. Amer. 19, pp. 517-535, has shown that most reflux episodes occur during transient lower esophageal sphincter relaxations (TLESRs), i.e. relaxations not . triggered by swallows. It has also been shown that gastric acid secretion usually is normal in patients with GERD.
The object of the present invention was to find a new way for the inhibition of transient lower esophageal sphincter relaxations (TLESRs), thereby preventing reflux. More particularly the object of the invention was to find a new way of treating gastro-esophageal reflux disease (GERD), as well as a new way for the treatment of regurgitation. Outline of the invention
The present invention is directed to the use of compounds of the general formula III for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs):
ArA-Ar2 (LΪI)
where Ar1 is an optionally substituted heterocyclic moiety and Ar2 is an optionally substituted carbocyclic moiety. The L moiety is a group that not only covalently binds to the Ar and Ar moieties and facilitates adoption of the correct spatial orientation of Ar and Ar2, but may itself interact with a protein to allow receptor binding. The Ar1 moiety is generally defined as a heterocyclic moiety, and the Ar2 moiety is generally defined as a carbocylic moiety. Ar1 and Ar2 can be monocyclic to or fused bicyclic groups. Ar2 is preferably defined as an aryl or alkaryl moiety. Ar1 is preferably defined as a heterocyclic, heteroaryl or heteroarylalkyl moiety. The ring systems encompassed by Ar1 can contain up to four heteroatoms, independently selected from the group consisting of N, S, and O. When Ar1 is a heteroaryl ring or ring system, it preferably contains one or two heteroatoms. At least one of the heteroatoms preferably is nitrogen (N). The heterocyclic or fused heterocylic moiety preferably is selected from the group consisting of quinolyl, quinazolyl, quinoxalyl, 2-pyrimidyl, 4-pyrimidyl, 5-pyrimidyl, 2-pyridyl, 3-pyridyl, 4- pyridyl, and pyrazyl.
Monocyclic Ar1 groups include, but are not limited to: thiazoyl, furyl, pyranyl, 2H- pyrrolyl, thienyl, pyrroyl, imidazoyl, pyrazoyl, pyridyl, pyrazinyl, pyrimidinyl, and pyridazinyl moieties. Monocyclic Ar2 group include but are not limited to phenyl and benzyl. Fused bicyclic Ar2 include, but are not limited to, naphthyl, fluorenyl, anthrenyl, indenyl, phenanthrenyl, and benzonaphthenyl. Fused bicyclic Ar1 groups include, but are not limited to: benzothiazole, benzimidazole, 3H-indolyl, indolyl, indazoyl, purinyl, quinolizinyl, isoquinolyl, quinolyl, phthalizinyl, naphthyridinyl, quinazolinyl, cinnolinyl, isothiazolyl, quinoxalinyl indolizinyl, isoindolyl, benzothienyl, benzofuranyl, isobenzofuranyl, and chromenyl moieties. Ar1 preferably is a 2-pyridyl moiety. Ar2 preferably is a substituted phenyl moiety.
The Ar1 and Ar2 moieties optionally may independently be substituted with one or more moieties selected from the group consisting of halogen, Cι-C3 alkyl, Cι-C3-O-alkyl, -OH, - OCF3, -COOR, -COR, -SOR, -SO2NRR', -NRR', -CN, -CF3, -CONRR', -A-(CH2)n-NRR', wherein A is C, O, N, SO, SO2, and R and R' are independently selected from the group consisting of Cι-C3 alkyl, H, cycloalkyl, heterocycloalkyl, aryl, and n is 1, 2, 3, or 4.
The L moiety is generally made up of 1-14 atoms. L can be independently selected from the group of atoms: C, H, N, O and S.
The L moiety can thus be made of a non-cyclic moiety. Several examples of these are - NH- (amine), -S- (thioether), -O- (ether), -CO- (ketone), -CONH- (amide), -CONHCH2-, - CH2CONH-, -CNHNH- (amidine), -CNHNHCH2-, -C=NO-CH2- (methoxime), - CH2NHCH2-, -CH2CH2NH-, -NHCH2CO-, -NHCH2CHOH-, -NHCNHNH- (guanidine), and -NHCONH- (urea), for example.
The atomic arrangement in the L moiety can also be made to form a five-membered ring. Several examples of these are cyclopentane, cyclopentadiene, furan, thiofuran, pyrrolidine, pyrrole, 2-imidazoline, 3-imidazoline, 4-imidazoline, imidazole, pyrazoline, pyrazolidine, imidazolidine, oxazole, 2-oxazole, thiazole, isoxazole, isothiazole, lH-l,2,4-triazole, 1H- 1,2,3-triazole, 1,2,4-oxathiazole, 1,3,4-oxathiazole, 1,4,2-dioxazole, 1,4,2-oxathiazole, 1,2,4-oxadiazole, 1,2,4-thiadiazole, 1,2,5-oxadiazole, 1,2,5-thiadiazole, 1,3,4-oxadiazole, 1,3,4-thiadiazole, and lH-tetrazole, for example.
The atomic arrangement in the L moiety can also be made to form a six-membered ring. Several examples of these are cyclohexane, piperidine, tetrahydropyridine, 1,4- dihydropyridine, pyridine, benzene, tetrahydropyran, 3,4 dihydro-2H-pyran, 2H-pyran, 4H- pyran, tetrahydrothiopyran, 3,4-dihydro-2H-thiopyran, 2H-thiin, 4H-thiopyran, orpholine, thiomorpholine, piperazine, pyridazine, pyrimidine, pyrazine, 1,2,4-triazine, 1,2,3-triazine, 1,3,5-triazine, and 1,2,4,5-tetrazine, for example.
The atomic arrangement in the L moiety can also be made to form a five- or six-membered ring containing one or more carbonyl groups. Several examples of these are 2-azetidinone, l,2-diazetidin-3-one, cyclopentanone, 2-cyclopentenone, 2-pyrrolidinone, 3-pyrrolin-2- one, succinimide, maleimide, 3-pyrazolidinone, 2-imidazolidone, 4-imidazolin-2-one, 2H- imidazol-2-one, 4-imidazolinone, 3-pyrazolin-5-one, hydantoin, lH-imidazole-2,5-dione, 2-oxazoline-4-one, 2-oxazolidinone, 3-oxazolin-5-one, 3(2H)-isoxazolone, 2,4- oxazolidinedione, l,2,4-triazoline-3,5-dione, 2,4-dihydro-3H-l,2,4-triazol-3-one, 2H- pyran-2-one, 2(lH)-pyridone, 2(lH)-pyrazinone, 4(3H)-pyrimidone, 3,4- dihydropyrimidin-4-one, glutarimide, 4,6-(lH,5H)-pyrimidinedione, l,3,5-triazin-2(lH)- one, and cyanuric acid, for example.
In one embodiment, L comprises a heterocyclic 5-membered ring system. In one embodiment, L is an oxazole or an 1,2,4-oxadiazole ring. The L moiety may have either one of two possible orientations with respect to the Ar1 and Ar2 groups. Thus, for example, the invention relates to compounds having the configuration 4-(Ar1)-2-(Ar2)-oxazole or 3- (Ar1)-5-(Ar2)-l ,2,4-oxadiazole.
One aspect of the invention is the use of compounds of Formula I for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs):
Figure imgf000005_0001
Formula I contains a five membered ring containing three variables X, Y, and Z. There are attached to this five membered ring two substituents, Arι and Ar2. The five-membered ring may contain 0, 1 or 2 double bonds as denoted by the dotted lines in Formula 1. In one embodiment of the invention, the five-membered ring has 2 double bonds.
In embodiments of the invention, variables X, Y and Z are independently selected from N, O, S and substituted carbon, designated CRi, wherein R is as defined below. At least one of X, Y or Z must be a heteroatom. In a preferred embodiment of the invention more than one of X, Y and Z are heteroatoms. In one aspect of the invention two of X, Y and Z are heteroatoms. While in another aspect of the invention all three of X, Y and Z are heteroatoms. In one embodiment of the invention at least one of X, Y and Z is N. In yet another embodiment of the invention two of X, Y and Z are N. In a further embodiment of the invention, X is N, Y is N and Z is O.
Ri is selected from the group consisting of: H; alkyl; -CF3; -OR2; -SR2; -NR2R3; =O; =S; =NR2; and =CR2R ; and wherein R2 and R3 may be independently selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; cycloalkyl; heterocycloalkyl; aryl; heteroaryl; alkylaryl; alkylheteroaryl; haloaryl; alkyloxyaryl; alkenylaryl; alkenyloxyaryl; and haloheteroaryl.
According to a further aspect of the invention the groups Ari and Ar2 are independently selected from aryl and heteroaryl. Particular embodiments of the invention include those wherein Ar! and Ar2 are independently selected from 5- and 6-member aryl and heteroaryl rings. In more particular embodiments of the invention Ari and Ar are selected from 6- member aryl and heteroaryl rings. Still more particular embodiments of the invention include those where Ari and Ar2 are independently selected from phenyl, pyridyl, furanyl, thienyl, pyrazinyl, pyrimidinyl, pyridazinyl, pyrrolyl, pyrazolyl, imidazolyl, triazolyl, thiazolyl. In a one embodiment of the invention, Ari is selected from phenyl and pyridyl. In a further embodiment of the invention, Ari is selected from pyridyl. In yet another embodiment, Ari is selected from 2-pyridyl. In another embodiment, Ari is selected from phenyl and pyridyl. In one embodiment, Ar! is phenyl. In another embodiment, Ar2 is 3- pyridyl.
According to another aspect of the invention at least one of Ari and Ar2 is substituted with at least one substituent G. In one embodiment of the invention, Ar2 is substituted with G. Embodiments of the invention include those where G is selected from the group consisting of: haloalkyl; heteroaryl; cycloalkene; alkenyl; alkynyl; A-alkenyl; A-alkynyl; alkyloxy; A-alkyloxy; R2OR3; R2OC(O)R3; (CH2)m-NR2R3; -OCH2CH(Cl)CH2Cl; and substituted aryl, wherein R2 and R3 are as defined above.
In one embodiment of the invention, G is haloalkyl.
In another embodiment of the invention, G is heteroaryl wherein heteroaryl is selected from the group consisting of: pyridyl; furanyl; thienyl; pyrazinyl; pyrimidinyl; pyridazinyl; pyrrolyl; pyrazolyl; imidazolyl; triazolyl; and thiazolyl. In one embodiment of the invention, G is selected from the group consisting of: pyridyl; furanyl; thienyl; and pyrimidinyl. In a further embodiment of the invention, G is selected from the group consisting of: 2-pyridyl; 3- pyridyl; 4-pyridyl; 3-thienyl; 5-pyrimidinyl; and 3-furanyl.
In yet another embodiment of the invention, G is cycloalkene. In a further embodiment of the invention G is selected from 5- and 6-member carbocyclic and heterocyclic rings containing one or more double bonds. In a still further embodiment of the invention, G is a 6-member heterocyle containing one double bond. In yet a further embodiment, G is 3- (1,2,5,6-tetrahydropyridyl). In one embodiment G is N-substituted 3-(l ,4,5,6 tetrahydropyridyl, for example 3-N-benzyl-(l, 2,5,6- tetrahydropyridyl).
According to another aspect of the invention, G is alkenyl. In a more particular embodiment of the invention, G is selected from the group consisting of: vinyl; 2- methylvinyl; propenyl; and butenyl. According to another aspect of the invention, G is alkynyl. In a more particular embodiment of the invention, G is selected from propargyl and butynyl. According to yet another aspect of the invention, G is selected from the group consisting of: A-alkenyl; and A-alkynyl; wherein an alkenyl, or alkynyl, respectively, is linked to Ari or Ar2 though A. In particular embodiments of the invention, A is selected from the group consisting of: CH2; O; NH; S; SO; SO2; NSO2; OSO2; and -C(NR2)NR3. In a more particular embodiment of the invention, A is selected from O and NH. In a still more particular embodiment of the invention, G is-OHCH2CH=CH2.
In a still further embodiment of the invention, G is selected from the group consisting of: alkyloxy; and A-alkyloxy; wherein alkyloxy is a straight or branched to chain alkyl radical substituted with a hydroxy group and A is a linker. In a more particular embodiment of the invention the alkyloxy group is linked to Ari or Ar2 through A, and A is selected from the group consisting of: CH2; O; NH; S; SO; SO2; NSO2; OSO2; and -C(NR2)NR3. In a more particular embodiment of the invention, A is O, and alkyloxy is selected from hydroxymethyl, hydroxyethyl, and hydroxypropyl. In a more particular embodiment G is - OCH2CH2CH2OH.
In a further embodiment of the invention, G is R2OCOR3. In a particular embodiment of the invention, G is an alkylester, wherein the ester links to Ari or Ar2 through an alkyl group. In a more particular embodiment of the invention, G is -CH2OC(O)H.
In still a further embodiment of the invention, G is (CH2)m-NR2R3, wherein m is 0 or 1. In a particular embodiment of the invention, G is (CH2)m-NR2R3, and R2 and R3 are independently selected from H, alkyl, alkyloxy, alkylamine, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, alkylaryl, alkylheteroaryl, haloaryl, alkyloxyaryl, alkenylaryl, alkenyloxyaryl, haloheteroaryl. In a more particular embodiment of the invention, R2 and R3 are independently selected from H and alkyl. In a further embodiment of the invention, R2 and R3 are independently selected from H and methyl. According to another aspect of the invention, G is aryl substituted with a substituent R4. In particular, the aryl group is selected from the group consisting of: phenyl; naphthyl; anthrenyl; and fluorenyl. The substituent R is selected from the group consisting of: halo; -OR2; -SR2; -SOR2; -SO2R2; -SO2NR2R3; -R2OR3; -R2SR3; -OCOR2; -OCONR2R3; - NR2COR3 ;-NR2CO2R3; -CN; -NO2; -OH;-R2OH; -C(NR2)NR3; -CO2R2R3;-CONR2R3;- C(O)R2; -CH(OR2)R3; -CH2(OR2); -A-(CH2)m-NR2R3; -NR2R3; aryl; aralkyl; heteroaryl; and heteroaralkyl. In one embodiment, aryl is phenyl. In a further embodiment, R is selected from the group consisting of halo; NR2R3; alkoxy; and CN. In a further embodiment of the invention, R4 is selected from the group consisting of F; NH2; methoxy.
According to another aspect of the invention, each of Ari, Ar2, and G is optionally further substituted with one or more substituents selected from R2 and R4. In one embodiment of the invention, Ari is further substituted with a substituent selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; halo; -OR2; -SR2; -SOR2; - SO2R2; -SO2NR2R3; -R2OR3; R2SR3; -OCOR2; -OCONR2R3; -NR2COR3; -NR2CO2R3; -CN; -NO2; -C(NR2)NR3; -CO2R2R3; -CONR2R3; -C(O)R2; -CH(OR2)R3; -CH2(OR2); -A-(CH2)m-N- R2R3; -NR2R3; aryl; aralkyl; heteroaryl; heteroaralkyl; cycloalkyl; heterocycloalkyl; alkylaryl; alkylheteroaryl; haloaryl; alkyloxyaryl; alkenylaryl; alkenyloxyaryl; and haloheteroaryl. In a further embodiment of the invention, Ari is further substituted with a substituent selected from the group consisting of: halo and cyano.
In another aspect of the invention wherein An is 2-pyridyl, the further substituent is located at the 5-position of Ari. In a further embodiment of the invention, Ari is 5-fluoro- 2-ρyridyl. In yet another embodiment of the invention, Ari is 5-cyano-2-pyridyl.
According to a further aspect of the invention, Ar2 is further substituted with one or more substituents selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkyl amine; halo; -OR2; -SR2; -SOR2; -SO2R2; -SO2NR2R3; -R2OR3; -R2SR3; -OCOR2; -OCON- R2R3; -NR2COR3; -NR2CO2R3; -CN; -NO2; -C(NR2)NR3; -CO2R2R3; -CONR2R3; -C(O)R2; -CH(OR2)R3; -CH2(OR2); -A-(CH2)m-NR2R3; -NR2R3; aryl; aralkyl; heteroaryl; heteroaralkyl; cycloalkyl; heterocycloalkyl; alkylaryl; alkylheteroaryl; haloaryl; alkyloxyaryl; alkenylaryl; alkenyloxyaryl; and haloheteroaryl. In one embodiment of the invention, Ar2 is further substituted with one or more substituents selected from the group consisting of: alkyl; alkoxy; alkyloxy; hydroxy; halo; cyano; and nitro. In another embodiment of the invention Ar2 has a further substituent selected from the group consisting of: cyano; fluoro; chloro; bromo; iodo; and methoxy.
In one embodiment of the invention, Ar2 is phenyl or 3-pyridyl, and is substituted with the substituent G at the meta position and a further substituent at the other meta position. In another embodiment of the invention, the substituent G is optionally further substituted with one or more substituents selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; halo; -OR2; -SR2; -SOR2; SO2R2; -SO2NR2R3; -R2OR3; -R2SR3; - OCOR2; -OCONR2R3; -NR2COR3; -NR2CO2R3; -CN; -NO2; -C(NR2)NR3; -CO2R2R3; - CONR2R3; -C(O)R2; -CH(OR2)R3; -CH2(OR2); -A-(CH2)m NR2R3; -NR2R3; aryl; aralkyl; heteroaryl; heteroaralkyl; cycloalkyl; heterocycloalkyl; alkylaryl; alkylheteroaryl; haloaryl; alkyloxyaryl; alkenylaryl; alkenyloxyaryl; and haloheteroaryl. In a more preferred embodiment of the invention, G is optionally further substituted with one or more substituents selected from the group consisting of: alkyl; alkoxy; alkenyl; halo; and cyano.
In one embodiment G is -OCH2CH2CH2OH, and is further substituted with chloro, to give -OCH2CH(Cl)CH2OH.
In one aspect of the invention, specific compounds of formula I include: 3-(2-pyridyl)-5- (3-methoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyι)-5-(3,5-dichlorophenyl)-l,2,4~ oxadiazole, 3-(2-pyridyl)-5-(3-chloroρhenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2- chlorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-[3-(trifluoromethyl)phenyl]-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-methylphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(l- naphthyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-[3-(trifluoromethoxy)phenyl]-l ,2,4- oxadiazole, 3-(2-pyridyl)-5-(2,3-difluorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl) -5-(2,5- difluorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3,5-difluorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyanophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3,5-dimethoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2,3-dichlorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (3-chloro-5-cyanophenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-fluoro-5-cyanophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-chloro-5-fluorophenyl)-l,2,4-oxadiazole, 3-(5- chloropyrid-2-yl)-5-(3-cyanophenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3- cyanophenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-fluorophenyl)-l,2,4- oxadiazole, 3-(3-fluoropyrid-2-yl)-5-(3-cyanophenyl)- 1 ,2,4-oxadiazole, 3-(5-fluoropyrid- 2-yl)-5-(3,5-dimethoxyphenyl)-l,2,4-oxadiazole, 3-(5-methoxypyrid-2-yl)-5-(3- cyanophenyl)-l,2,4-oxadiazole, 3-(2-quinolinyl)-5-(3-cyanophenyl)-l,2,4-oxadiazole, 3- (3-chloro-5-trifluoromethylpyrid-2-yl)-5-(3-cyanophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)- 5-(5-chloro-2-methoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-chloro-5- methylthioρhenyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-bromo-5-methoxyphenyl)-l ,2,4- oxadiazole, 3-(2-pyridyl)-5-(2,5,6-trifluorophenyl)-l ,2,4-oxadiazole, 3-(2-ρyridyl)-5-(3- nitrophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-bromophenyl)-l,2,4-oxadiazole, 2-(3,5- dichlorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-chlorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-methoxyphenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(2-chlorophenyl)-4-(2-pyridyl)-l,3- oxazole, 2-(3-trifluoroρhenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-methyl phenyl)-4-(2- pyridyl)-l,3-oxazole, 2-(l-naphthyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3- trifluoromethoxyphenyl)-4-(2-pyridyl)- 1 ,3-oxazole, 2-(2,3-difluorophenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(2,5-difluorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3,5-difluorophenyl)-4~ (2-pyridyl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3,5- dimethoxyphenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(2,3-dichlorophenyl)-4-(2-pyridyl)- 1,3- oxazole, 2-(3-chloro-5-cyanophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-fluoro-5- cyanophenyl)-4-(2-pyridyl)-l ,3-oxazole, 2-(3-chloro-5-fluoroρhenyl)-4-(2-pyridyl)-l ,3- oxazole, 2-(3-cyanophenyl)-4-(5-chloropyrid-2-yl)- 1,3-oxazole, 2-(3-cyanophenyl)-4-(5- fluoropyrid-2-yl)-l ,3-oxazole, 2-(3-cyano-5-fluorophenyl)-4-(5-fluoroρyrid-2-yl)-l ,3- oxazole, 2-(3-cyanophenyl)-4-(3-fluoropyrid-2-yl)-l ,3-oxazole, 2-(3,5-dimethoxyphenyl)- 4-(5-fluoropyrid-2-yl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(5-methoxypyrid-2-yl)-l,3- oxazole, 2-(3-cyanophenyl)-4-(2-quinolinyl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(3-chloro- 5-trifluoromethylpyrid-2-yl)- 1,3-oxazole, 2-(5-chloro-2-methoxyphenyl)-4-(2-pyridyl)-l,3- oxazole, 2-(2-chloro-5-methylthiophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(2-bromo-5- methoxyphenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(2,5,6-trifluorophenyl)-4-(2-pyridyl)-l,3- oxazole, 2-(3-chlorophenyl)-4-(pyridin-2-yl)- 1 ,3-oxazole, 2-(2,5,6-trifluorophenyl)-4-(2- pyridyl)-l,3-oxazole, 2-(3-nitrophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-bromophenyl)-4- (2-pyridyl)- 1,3-oxazole and pharmaceutically acceptable salts thereof.
In still a further aspect of the invention, the compounds of the formula I include: 3-(5- Methyl-pyrid-2-yl)-5-(3-cyanophenyl)-l,2,4-oxadiazole, 3-(5-Cyano-pyrid-2-yl)-5~(3- cyanophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-bromo-2-methoxyphenyl)- 1,2,4- oxadiazole, 3-(2-Pyridyl)-5-(5-bromo-2-fluorophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5- (5-cyano-2-fluorophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-bromopyrid-3-yl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-(5-chloro-pyrid-3-yl)-l,2,4-oxadiazole, 3-(5-Cyanopyrid-2-yl)- 5-(5-bromo-pyrid-3-yl)- 1 ,2,4-oxadiazole, 3-(5-Fluoropyrid-2-yl)-5-(5-bromo-pyrid-3-yl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-thiomethoxy-pyrid-3-yl)-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(5-methylpyrid-3-yl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-methoxypyrid-3-yl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-methylphenyl)-l ,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-fluoro-5-bromophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-iodo-5- bromophenyl)-l,2,4-oxadiazole, 3-(5-Fluoro-2-pyridyl)-5-(3-fluoro-5-bromophenyl)- 1,2,4- oxadiazole, 3-(2-Pyridyl)-5-(3-iodo-5-(methylphenylester)-l,2,4-oxadiazole, 3-(2-Pyridyl)- 5-(3-methoxy-5-(methoxycarbonyl)phenyl)-l ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-bromo-5- cyanophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-3-iodophenyl)-l,2,4-oxadiazole, 3-(5-Cyano-2-pyridyl)-5-(3-bromophenyl)-l,2,4-oxadiazole, 3-(5-Cyano-2-pyridyl)-5-(3- cyano-5-fluorophenyl)-l,2,4-oxadiazole, 3-(5-Cyano-2-pyridyl)-5-(3-bromo-5- fluorophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-2-methoxyphenyl)- 1,2,4- oxadiazole, 3-(2-Pyridyl)-5-(2-cyano-5-methoxyphenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5- (5-cyano-pyrid-3-yl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5- (methoxycarbonyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-phenyl-pyrid-3-yl)- 1,2,4- oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-methoxyphenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5- (3-cyano-5-hydroxyphenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5- propoxyphenyl)-l,2,4-oxadiazole, 2-(3-Cyanophenyl)-4-(pyridin-2-yl)-l,3-thiazole, 2-((3- Bromo-5-iodophenyl)-4-pyridin-2-yl)-l ,3-oxazole, 2-(2-Pyridyl)-5-(3-iodophenyl)-l ,3,4- oxadiazole, 2-(2-Pyridyl)-5-(3-cyanophenyl)-l,3,4-oxadiazole, 2-(2-Pyridyl)-5-(3- cyanophenyl)-l,3,4-triazole, 3-(5-Chloropyrid-2-yl)-5-(3-cyano-5-fluorophenyl)- 1,2,4- oxadiazole, 3-(5-Chloropyrid-2-yl)-5-(3-cyano-5-chlorophenyl)-l ,2,4-oxadiazole, 3-(5- Chloropyrid-2-yl)-5-(3-chloro-5-fluorophenyl)-l ,2,4-oxadiazole, 3-(5-Chloropyrid-2-yl)-5- (3-cyano-5-methoxyphenyl)-l,2,4-oxadiazole, 3-(5-Fluoropyrid-2-yl)-5-(3-cyano-5- chlorophenyl)-l,2,4-oxadiazole, 3-(5-Fluoropyrid-2-yl)-5-(3-fluoro-5-chlorophenyl)-l,2,4- oxadiazole, 3-(5-Fluoropyrid-2-yl)-5-(3-cyano-5-methoxyphenyl)-l,2,4-oxadiazole, 3-(5- Cyanopyrid-2-yl)-5-(3-cyano-5-chlorophenyl)- 1 ,2,4-oxadiazole, 3-(5-Cyanopyrid-2-yl)-5- (3-fluoro-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5-Cyanopyrid-2-yl)-5-(3-cyano-5- methoxyphenyl)-l,2,4-oxadiazole, 3-(5-Fluoropyrid-2-yl)-5-(3,5-di-cyanophenyl)~l,2,4- oxadiazole, 3-(3-(4-Dimethylaminobutoxy)-pyrid-2-yl)-5-(3-cyano-5-fluorophenyl)-l,2,4- oxadiazole, 3-(3-(5-Dimethylaminopentyloxy)-pyrid-2-yl)-5-(3-Cyano-5-fluorophenyl)- 1,2,4-oxadiazole, 3-(3-(6-Dimethylaminohexyloxy)-pyrid-2-yl)-5-(3-cyano-5- fluorophenyl)- 1,2,4-oxadiazole and pharmaceutically acceptable salts thereof.
In still a further aspect of the invention, the compounds of the formula I include: 3-(2- Pyridyl)-5-(3-allyloxy-5-(methoxycarbonyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3- N,N-dimethylaminophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-(4- pyridyl)phenyl)-l ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-methoxy-5-(4-pyridyl)phenyl-l ,2,4- oxadiazole, 3-(2-pyridyl)-5-(2-fluoro-5-(4-pyridyl)phenyl)-l,2,4~oxadiazole, 3-(2-Pyridyl)-5-(3-fluoro-5-(4-pyridyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3- fluoro-5-(3-pyridyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-fluoro-5-(3- pyridyl)phenyl)-l,2,4-oxediazole, 3-(2-Pyridyl)-5-(2-methoxy-5-(3-pyridyl)phenyl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-(3-pyridyl)phenyl)-l,2,4-oxadiazole, 3-(5-Fluoro- 2-pyridyl)-5-(3-fluoro-5-(3-pyridyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-(3- pyridyl-ρyrid-3-yl))-l,2,4-oxadiazole, 3-(5-Fluoroρyrid-2-yl)]-5-[5-(3-pyridyl-pyrid-3-yl)]- 3-1 ,2,4-oxadiazole, 3-(5-Cyanopyrid-2-yl)-5-(3-(pyrid-3-yl)phenyl)-l ,2,4-oxadiazole, 3-(5- Cyanoρyrid-2-yl)-5-(3-fluoro-5- (pyrid-3-yl)phenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3- cyano-5- (2-pyridyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-methoxy-5-(2- pyridyl)phenyl)-l,2,4-oxediazole, 3-(2-Pyridyl)-5-(2-fluoro-5-(2-pyridyl)phenyl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-((3-(3-fluorophenyl)-5-fluorophenyl))-l ,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3- cyano-5-(3-thiophene)phenyl)-l ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-(3- thienyl)-pyrid-3-yl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-3-furyl)-pyrid-3-yl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-(5-(3-methoxyphenyl)-pyrid-3-yl)- 1,2,4-oxadiazole, 3-(2-
Pyridyl)-5-(3-cyano-5-(5-pyrimidyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)- 5-(3-cyano-5- (3-aminophenyl)phenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl) -5-(3-cyano-5-(3- fluorophenyl)phenyl)-l,2,4-oxediazole, 3-(2-Pyridyl)-5-(5-(5-pyrimidyl)-pyrid-3-yl)-l,2,4- oxadiazole, 3-(2- Pyridyl)-5-(3-aminomethyl-5-cyanophenyl)- 1,2,4-oxadiazole, 3-(2- Pyridyl)-5-(5-(2-propenyl)-pyrid-3-yl)-l ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5- vinylphenyl)- 1,2,4-oxadiazole, 3-(2- Pyridyl)~5-(3-cyano-5-(2-hydroxyethyl)phenyl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-(2,3-dichloropropoxy)phenyl)-l,2,4-oxadiazole, 3- (2-Pyridyl)-5-(3-allyloxy-5-carboxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-allyloxy- 5-cyanophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-3-(3-hydroxypropyn-l- yl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-N-methylaminophenyl)- 1,2,4-oxadiazole, and 3-(2-Pyridyl)-5-(5-(3-N-benzyl-l,2,5,6-tetrahydropyridine)-pyrid-3-yl)-l,2,4- oxadiazole.
In still a further aspect of the invention, the compounds of the formula I include: 3-(2-pyridyl)-5-(3-fluorophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2,3-dimethoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-phenoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-benzoylphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-chloro-5- (trifluoromethyl)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3,4,5-trifluorophenyl)-l,2,4- oxadiazole, 3-(3-methoxyphenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(2- hydroxyphenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(5-chloro-2-hydroxyphenyl)- 1 ,2,4- oxadiazole, 3-(2-pyridyl)-5-(2-aminophenyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-(5-chloro- 2-aminophenyl)- 1,2,4-oxadiazole, 5-(3-hydroxyρhenyl)-3-(pyridin-2-yl)-l,2-oxazole, 5-(3- cyanophenyl)-3-(pyridin-2-yl)-l,2-oxazole, 3-(2-pyridyl)-5-(3-chlorophenyl)-l,2,4- triazole, 3-(2-pyridyl)-5-(3-iodophenyl)-l ,2,4-triazole, 3-(2-pyridyl)-5-(5-hydroxypyrid-3- yl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(5-fluoro-3-(thiomethyl)phenyl)-l,2,4- oxadiazole, 5-(2-pyridyl)-3-(3-(lH-imidazol-l-yl)-5-fluorophenyl))-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)-l,2,4-oxadiazole, 3-(5-fluoro-2- pyridyl)-5-(3-fluoro-5-trifluoromethylphenyl)-l,2,4-oxadiazole, 3-(5-cyanopyrid-2-yl)-5- (3-alloxy-5-cyanophenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-alloxy-5- cyanophenyl)- 1,2,4-oxadiazole, 3-(5-cyanopyrid-2-yl)-5-(3-cyano-5-propoxyphenyl)~ 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-propoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-nitrophenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3- cyano-5-nitrophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5- dimethylaminophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-(2- methoxyethoxy)phenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-(lΗ- imidazol-l-ylmethyl)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- (methoxymethyl)phenyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-methoxyphenyl)-5-(2-pyridyl)- 1 ,2,4-oxadiazole, 3-(3-cyano-5-methoxyphenyl)-5-(5-fluoropyrid-2-yl)-l ,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-ethoxyphenyl)-l,2,4-oxadiazole, 3-(5-cyanopyrid-2- yl)-5-(3-cyano-5-ethoxyphenyl)-l,2,4-oxadiazole, 3-(5-chloropyrid-2-yl)-5-(3-allyloxy-5- cyanophenyl)- 1,2,4-oxadiazole, 3-(5-chloropyrid-2-yl)-5-(3-cyano-5-propoxyphenyl)- 1,2,4-oxadiazole, 3-(5-chloropyrid-2-yl)-5-(3-cyano-5-ethoxyphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-hexyloxyphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid- 2-yl)-5-(3-cyano-5-(methoxymethyl)phenyl)-l ,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(5- cyano-2-methoxyphenyl)- 1,2,4-oxadiazole, 5-(5-cyano-2-methoxyphenyl)-3-(5-cyano- pyrid-2-yl)- 1,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-(3-bromophenyl)-l,2,4-oxadiazole, 5-(3-chloro-5-methyl-pyrid-4-yl)-3-(2-pyridyl)-l,2,4-oxadiazole, 5-(3-chloro-5-methoxy- pyrid-4-yl)-3-(2-pyridyl)-l,2,4-oxadiazole, 3-(3-cyano-5-methylphenyl)-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(5-bromo-pyrid-3-yl)-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(3-cyano-5- fluorophenyl)-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(3-iodophenyl)-5-(2-pyridyl)-l,2,4- oxadiazole, 3-(3-cyanophenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(3-cyano-5- dimethylamino-phenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(3-cyano-5-methylphenyl)-5-(5- fluoro-pyrid-2-yl)- 1,2,4-oxadiazole, 3-(3-cyano-5-fluorophenyl)-5-(5-fluoro-pyrid-2-yl)- 1,2,4-oxadiazole, 3-(4-cyanophenyl)-3-(6-cyano-pyrid-2-yl)-l,2,4-oxadiazole, 5-(3-cyano-5-trifluoromethoxyphenyl)-3-(2-pyridyl)-l,2,4-oxadiazole, 5-(3- methoxycarbonyl-5-trifluoromethoxyphenyl)-3-(2-pyridyl)- 1 ,2,4-oxadiazole, 5-(3-cyano- 5-trifluoromethoxyphenyl)-3-(5-fluoro-pyrid-2-yl)- 1 ,2,4-oxadiazole, 3-(5-cyano-pyrid-2- yl)-5-(3-cyano-5-trifluoromethoxyphenyl)-l,2,4-oxadiazole, 3-(3-cyano-5- dimethylaminophenyl)-5-(5-fluoro-pyrid-2-yl)- 1 ,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3- (3-cyano-5-dimethylaminophenyl)-l,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(3-cyano-5- methoxyphenyl)- 1 ,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(6-cyano-4-methoxy-pyrid-2- yl)- 1,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(6-cyano-4-hydroxy-pyrid-2-yl)-l,2,4- oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(3-cyano-5-trifluoromethoxyphenyl)-l,2,4- oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(3-cyanophenyl)- 1,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(3-cyano-5-methylphenyl)-l,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(3- cyano-5-fluorophenyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-trifluoromethoxyphenyl)-5-(2- pyridyl)- 1 ,2,4-oxadiazole, 3-(3-fluoro-5-methoxyphenyl)-5-(2-pyridyl)- 1 ,2,4-oxadiazole, 3-(3-cyanophenyl)-5-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 3-(3-cyano-5- trifluoromethoxyphenyl)-5-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 3-(3-fluoro-5- methoxyphenyl)-5-(5-fluoropyrid-2-yl)~ 1,2,4-oxadiazole, 3-(3,5-dimethoxyphenyl)-5-(5- fluoropyrid-2-yl)- 1,2,4-oxadiazole, 3-(3-fluoro-5-(lH-imidazol-l-yl)phenyl)-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-fluoro-5-(3-pyridyl)phenyl)-l,2,4- oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-bromo-5-(3-pyridyl)phenyl)- 1 ,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-fluoro-5-methoxyphenyl)-l ,2,4-oxadiazole, 3-(pyrid-2-yl)-5- (3-cyano-5-thiomethylphenyl)-l,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-(3-cyano-5- thiomethylphenyl)- 1,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5-thiomethylphenyl)-l,2,4- oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5-thiomethylsulphoxidephenyl)-l,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5-thioethylphenyl)- 1,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(5-fluoro- 3-thiotertbutylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5- methylphenyl)- 1,2,4-oxadiazole, 3-(5-cyanopyrid-2-yl)-5-(3-cyano-5-thiomethylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(4-cyano-2-thienyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)-l,2,4-oxadiazole, 3-(5-fluoro-2- pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)-l,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5- (3-(3-pyridyl)phenyl)-l,2,4-oxadiazole, 5-(3-methyl-5-(3-pyridyl)-pyrid-4-yl)-3-(2- pyridyl)- 1,2,4-oxadiazole, 5-(3-methoxy-5-(3-pyridyl)-pyrid-4-yl)-3-(2-pyridyl)- 1,2,4- oxadiazole, 5-(2-pyridyl)-3-(5-(3-pyridyl)-pyrid-3-yl)-l ,2,4-oxadiazole, 5-(2-pyridyl)-3-(3- (3-pyridyl)-phenyl)- 1 ,2,4-oxadiazole, 5-(5-fluoro-pyrid-2-yl)-3-(3-fluoro-5-(3-pyridyl)- phenyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-carboxy-5-methoxyphenyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-(carboxamido)-5-methoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3- cyano-5-(2-N,N-dimethylaminoethoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano- 5-(N,N-dimethylaminopropoxy)phenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2- aminoethoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2- hydroxyethoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-isopropoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-ethoxyphenyl)- 1,2,4-oxadiazole, 3-(2- pyridyl)-5-(3-cyano-5-(2,2,2-trifluoroethoxy)phenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3- cyano-5-cyclopropylmethoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-amino-5- cyanophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-amino-5-cyanophenyl)- 1,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(trifluoromethylsulfonyloxy)phenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2-methoxy-2-oxoethoxy)phenyl)-l ,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2-tert-butoxy-2-oxoethoxy)phenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(methoxymethoxy)phenyl)-l,2,4-oxadiazole, 3-(2- pyridyl)-5-(3-cyano-5-(methoxyethoxy)phenyl)- 1 ,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5- (3-cyano-5-cyclopentylaminophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- hexyloxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-
(dimethylamino)carbonylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5~(3-cyano-5- ethylaminophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5- diethylaminophenyl)- 1,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-(3-fluoro-5-(lH-tetraazol- 5-yl)-phenyl)-l,2,4-oxadiazole, 5-(3-fluoro-5-(l-methyl-lH-tetraazol-5-yl)-phenyl)-3-(5- fluoro-pyrid-2-yl)-l ,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-(l-benzyl- 1 ,2,5 ,6- tetrahydropyridin-3-yl)-5-fluorophenyl)-l,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3- fluoro-5-(lH-imidazol-4-yl)phenyl)-l,2,4-oxadiazole, l-(3-cyanophenyl)-4-(5-fluoro-2- pyridyl)-lΗ-imidazole, 3-(2-pyridyl)-5-(3-(lH-imidazol-l-yl)-5-thiomethoxyphenyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-(lH-imidazol-l-yl)ρhenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(lH-imidazol-l-yl)phenyl)-l ,2,4-oxadiazole, 2-(3-iodophenyl)- 4-(pyridin-2-yl)-l ,3-thiazole, 3-(2-pyridyl)-2-(3-cyanophenyl)-furan, 3-(5-fluoro-2- pyridyl)-2-(3-cyanophenyl)-furan, 3-(5-chloro-2-pyridyl)-2-(3-cyanophenyl)-furan, 2-(2-pyridyl)-5-(5-fluoro-3-(l-imidazolyl)phenyl)-furan, 3-(5-(2-pyridyl)-2-furyl)- benzonitrile, 3-(5-(5-chloro-2-pyridyl)-2-furyl)-benzonitrile, 3-(5-(5-cyano-2-pyridyl)-2-furyl)-benzonitrile, 3-(5-(5-fluoro-2-pyridyl)-2-furyl)- benzonitrile, 3-fluoro-5-(5-(2-pyridyl)-2-furyl)-benzonitrile, 2-(3-cyanophenyl)-4-(5- fluoropyrid-2-yl)- 1,3-oxazole, 2-(3-cyano-5-fluorophenyl)-4-(5-fluoropyrid-2-yl)- 1,3- oxazole, 2-(3-cyano-5-fluorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(5-allyloxy-3- cyanophenyl)-4-(5-fluoropyrid-2-yl)- 1,3-oxazole, 2-(3-cyano-5-methoxyphenyl)-4-(pyrid- 2-yl)- 1,3-oxazole, 2-(3-cyano-5-methoxyphenyl)-4-(5-fluoiOpyrid-2-yl)-l,3-oxazole, 2-(3- cyano-5-n-propyloxyphenyl)-4-(5-fluoropyrid-2-yl)-l,3-oxazole, and 2-(3-cyano-5- methoxyphenyl)-4-(4-pyrid-2-yl)-5-chloro- 1 ,3-oxazόle.
The present invention is further directed to the use of compounds of the Formula II for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs):
Figure imgf000018_0001
wherein — represents a double or single bond;
X2 is selected from N and C, and Y2 is selected from the group consisting of N; O; S; and CR5, and at least one of X2 and Y2 is a heteroatom; wherein R5 is selected from the group consisting of: H; alkyl; -CF3; - OR6; -SR6; -NR6R7; =O; =S; - =NR6; and =CR6R ; and wherein R6 and R may be independently selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; cycloalkyl; heterocycloalkyl; aryl; heteroaryl; alkylaryl; alkylheteroaryl; haloaryl; alkyloxyaryl; alkenylaryl; alkenyloxyaryl; and haloheteroaryl; and Ar3 and Ar4 are independently selected from the group consisting of aryl and heteroaryl and one, or both, of Ar3 and Ar4 is optionally substituted with one or more substituents G2; wherein G2 is selected from the group consisting of: haloalkyl; heteroaryl; cycloalkene; alkenyl; alkynyl; A-alkenyl; A- alkynyl; alkyloxy; A-alkyloxy; R6OR7; -R6OC(O)R7; -(CH2)m-NR6R7; - OCH2CH(Cl)CH2Cl; and substituted aryl wherein the aryl substituent is R8; and wherein A is a linker selected from the group consisting of: CH2; O; NH; S; SO; SO2; NSO2; OSO2; and -C(NR6)NR7; m is selected from 0 and 1; and R8 is selected from the group consisting of: halo; -OR6; -SR6; -SOR6; SO2R6; -SO2NR6R7; -R6OR7; -R6SR7; -OCOR6; -OCONR6R7; -NR6COR7; NR6CO2R7; -CN; -NO2; -C(NR6)NR7; -CO2R6R7; -CONR6R7; -C(O)R6; CH(OR6)R7; -CH2(OR6); -A-(CH2)m-NR6R7; -NR6R7; aryl; aralkyl; heteroaryl; and heteroaralkyl; and Ar3, Ar , and the substituent G2 are optionally further substituted with one or more substituents selected independently from the group consisting of: R6 and R8.
According to another aspect of the invention there is a five member ring containing two variables X2, and Y2. There are attached to this five member ring two substituents, Ar3 and Ar4. The five member ring may contain 0, 1, or 2 double bonds as denoted by the dotted lines in Formula II. In one embodiment of the invention, the five member ring has two double bonds.
In one embodiment of the invention, the variable X is selected from the group consisting of: N and C, and the variable Y2 is selected from the group consisting of: N; O; S; and CR5 wherein at least one of X2, and Y2 must be a heteroatom. In the case where Y2 is CR5, R5 is selected from the group consisting of: H; alkyl; -CF3; -OR6; -SR6; -NR6R; -C(O); -C(S); - C=NR6; and =CR6R, wherein R6 and R7 may be independently selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; cycloalkyl; heterocycloalkyl; aryl; heteroaryl; alkylaryl; alkylheteroaryl; haloaryl; alkyloxyaryl; alkenylaryl; alkenyloxyaryl; and haloheteroaryl. In one embodiment of the invention, both X2 and Y2 are heteroatoms. In a further embodiment of the invention, X2 is N. In a still further embodiment of the invention Y2 is N. In a further embodiment of the invention, X2 and Y2 are both N.
According to another aspect of the invention, the group Ar3 and Ar4, are independently selected from the group consisting of aryl and heteroaryl. Particular embodiments of the invention include those wherein Ar3 and Ar are independently selected from 5- and 6- member aryl and heteroaryl rings. In more particular embodiments of the invention, Ar3 and Ar4 are selected from 6-member aryl and heteroaryl rings. Still more particular embodiments of the invention include those where Ar3 and Ar4 are independently selected from phenyl, pyridyl, furanyl, thienyl, pyrazinyl, pyrimidinyl, pyridazinyl, pyrrolyl, pyrazolyl, imidazolyl, triazolyl, and thiazolyl. In one embodiment of the invention, Ar3 and Ar are independently selected from phenyl and pyridyl. In another embodiment of the invention, one of Ar3 and Ar is phenyl and one is pyridyl.
According to still another embodiment of the invention, Ar3 and Ar are optionally substituted with one or more substituents G2, wherein G2 is selected from the group consisting of: haloalkyl; heteroaryl; cycloalkene; alkenyl; alkynyl; A-alkenyl; A-alkynyl; alkyloxy; A-alkyloxy; -R6OR7; -R6OC(O)R7; (CH2)m-NR6R7; -OCH2CH(Cl)CHCl; and substituted aryl wherein the aryl substituent is R8. In a particular embodiment wherein one, or both, of Ar3 and Ar4 are substituted with G2, G2 is selected from the group consisting of: A-alkenyl; Alkynyl; and A-alkyloxy, and A is selected from the group consisting of: CH ; O; NH; S; SO; SO2; OSO2; NSO2: and -C(NR6)NR7. In one embodiment, G2 is (CH2)m- NR6R7. In an embodiment of the invention, G2 is substituted aryl and the substituent R8 is selected from the group consisting of: halo; -OR6; -SR6; -SOR6; -SO2R6; -SO2NReR7; - R6OR7 R6SR7; -OCOR6; -OCONR6R7; -NR6COR7; -NR6CO2R7; -CN; -NO2; -C(NR6)NR7; -CO2R6R7; -CONR6R7; -C(O)R6; -CH(OR6)R7; -CH2(OR6); -A-(CH2)m-NR6R7; -NR6R7; aryl; aralkyl; heteroaryl; and heteroaralkyl.
In a further embodiment of the invention, each of Ar3 and Ar4 and G2 is further substituted with one or more substituents selected from R6, and R8. In one embodiment of the invention, each of Ar3 and Ar is independently further substituted with one or more substituents selected from the group consisting of: H; alkyl; haloalkyl; alkyloxy; alkylamine; halo; -OR6; -SR6; -SOR6; -SO2R6; -SO2NR6R6; R6OR7 R6SR7; -OCOR6; - OCONR6R7; -NR6COR7; -NR6CO2R7; -CN; -NO2; -C(NR6)NR7; -CO2R6R7;-CONR6R7; - C(O)R6;-CH(OR6)R7;-CH2(OR6); -A-(CH2)m-NR6R7; -NR6R7; aryl; aralkyl; heteroaryl; heteroaralkyl; cycloalkyl; heterocycloalkyl; alkylaryl; alkylheteroaryl; haloaryl; alkyloxyaryl; alkenylaryl; alkenyloxyaryl; and haloheteroaryl. According to a further aspect of the invention, Ar3 and Ar4 are independently substituted with a substituent selected from the group consisting of halo and cyano. In specific embodiments of the invention, the compounds of formula II include: 4-(3-Cyanophenyl)-l-(2-pyridyl)-lH- imidazole, l-(3-Cyanophenyl)-4-(2-pyridyl)-l H-imidazole.
The term "alkyl" as used herein refers to straight- and branched-chain alkyl radicals containing from 1, 2, 3, 4, 5, or 6 carbon atoms and includes methyl, ethyl and the like.
The term "aryl" as used herein refers to a monocyclic aromatic group such as phenyl and the like or a benzo-fused aromatic group such as indanyl, naphthyl, fluorenyl and the like.
The term "heteroaryl" refers to aromatic compounds containing one or more hetero atoms such as pyridyl, furyl, thienyl and the like or a benzofused aromatic so containing one or more heteroatoms such as indolyl, quinolinyl and the like.
The term "heteroatom" as used herein refers to non-carbon atoms such as N, O, S and the like.
The term "cycloalkyl" as used herein refers to a carbocyclic ring containing of 3, 4, 5, 6, 7, or 8 carbons and includes cyclopropyl, cyclohexyl and the like.
The term "heterocycloalkyl" as used herein refers to 3, 4, 5, 6, 7, or 8 membered rings containing 1, 2, or 3 heteroatoms selected from the group consisting of N, S and O and includes piperidine, piperizine, pyran and the like.
The term "halo" as used herein refers to the halogen radicals fluoro, chloro, bromo, and iodo. The term "haloalkyl" as used herein refers to an alkyl substituted with one or more halogens, such as bromoethyl, chloromethyl, trichloromethyl and the like.
The term "alkoxy" as used herein refers to a straight- or branched- chain alkoxy containing 1, 2, 3, 4, 5 or 6 carbon atoms and includes methoxy, ethoxy and the like.
The term "alkyloxy" as used herein refers to an alkyl substituted with a hydroxy group such as hydroxyethyl, hydroxypropyl and the like.
The term "alkenyl" as used herein refers to a straight or branched- chain alkyl containing one or more double bonds such as propenyl, vinyl and the like.
The term "aralkyl" as used herein refers to an alkyl substituted with an aryl such as benzyl, phenethyl and the like.
The term "alkylamine" as used herein refers to an alkyl substituted with an amine such as aminomethyl, or dimethylaminoethyl and the like.
The term "alkylaryl" as used herein refers to an aryl substituted with an alkyl group such as methylphenyl, isopropylnaphthyl and the like.
The term "alkylheteroaryl" as used herein refers to a heteroaryl substituted with an alkyl group. Particular examples include methylpyridine, ethylfuran, and the like.
The term "alkynyl" as used herein refers to a straight or branched-chain alkyl containing one or more double bonds such as ethynyl, propynyl, vinyl and the like.
The term "haloaryl" as used herein refers to an aryl substituted with a halogen such as bromophenyl, chlorophenyl and the like. The term "alkyloxyaryl" as used herein refers to an aryl substituted with an alkyloxy group such as hydroxyethylphenyl and the like.
The term "alkenyloxyaryl" as used herein refers to an aryl substituted with an alkenyloxy group such as propenyloxy phenyl and the like.
The term "haloheteroaryl" as used herein refers to a heteroaryl substituted with a halogen. A particular example is 4-chloropyridine.
The term "cycloalkene" as used herein refers to a 3, 4, 5, 6, 7, or 8-member ring, which contains one or more double bonds, and may contain a heteroatom. Particular examples include cyclohexene, tetrahydropyridine and the like.
The term "alkenylaryl" as used herein refers to an aryl substituted with an alkenyl group. A particular example is vinyl benzene.
The compounds above may be prepared as described in WO02/068417 A2.
Consequently, the present invention is directed to the use of a compound of formula I, II or III for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs).
A further aspect of the invention is the use of a compound formula I, II or III for the manufacture of a medicament for the prevention of reflux.
Still a further aspect of the invention is the use of a compound of formula I, II or III for the manufacture of a medicament for the treatment of gastro-esophageal reflux disease (GERD). Effective prevention of regurgitation would be an important way of preventing, as well as curing lung disease due to aspiration of regurgitated gastric contents, and for managing failure to thrive. Thus, a further aspect of the invention is the use of a compound of formula I, II or HI for the manufacture of a medicament for the treatment of regurgitation.
Still a further aspect of the invention is the use of a compound of formula I, II or III for the manufacture of a medicament for the treatment or prevention of lung disease.
Another aspect of the invention is the use of a compound of formula I, II or III for the manufacture of a medicament for the management of failure to thrive.
Still a further aspect of the invention is the use of a compound of formula I, II or III for the manufacture of a medicament for the treatment or prevention of asthma, such as reflux- related asthma.
Another aspect of the invention is the use of a compound of formula I, LT or III for the manufacture of a medicament for the treatment or prevention of chronic laryngitis.
A further aspect of the present invention is a method for the inhibition of transient lower esophageal sphincter relaxations (TLESRs), whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such inhibition.
Another aspect of the invention is a method for the prevention of reflux, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such prevention.
Still a further aspect of the invention is a method for the treatment of gastro-esophageal reflux disease (GERD), whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or HI is administered to a subject in need of such treatment.
Yet another aspect of the invention is a method for the treatment of regurgitation, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such treatment.
Still a further aspect of the invention is a method for the treatment or prevention of asthma, such as reflux-related asthma, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or HI is administered to a subject in need of such treatment.
Yet another aspect of the invention is a method for the treatment of chronic laryngitis, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or LU is administered to a subject in need of such treatment.
Still a further aspect of the invention is a method for the treatment or inhibition of lung disease, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such treatment.
Still a further aspect of the invention is a method for the management of failure to thrive, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I, II or III is administered to a subject in need of such treatment.
A further aspect of the invention is the use of a compound according to formula I, II or HI for the manufacture of a medicament for the treatment or prevention of functional gastrointestinal disorders, such as functional dyspepsia (FD). Yet another aspect of the invention is the use of a compound according to formula II for the manufacture of a medicament for the treatment or prevention of irritable bowel syndrome (BBS), such as constipation predominant LBS, diarrhea predominant IBS or alternating bowel movement predominant IB S . The wording "TLESR", transient lower esophageal sphincter relaxations, is herein defined in accordance with Mittal, R.K., Holloway, R.H., Penagini, R., Blackshaw, L.A., Dent, J., 1995; Transient lower esophageal sphincter relaxation. Gastroenterology 109, pp. 601-610.
The wording "reflux" is defined as fluid from the stomach being able to pass into the esophagus, since the mechanical barrier is temporarily lost at such times.
The wording "GERD", gastro-esophageal reflux disease, is defined in accordance with van Heerwarden, M.A., Smout A.J.P.M., 2000; Diagnosis of reflux disease. Bailliere's Clin. Gastroenterol. 14, pp. 759-774.
Pharmaceutical formulations
For clinical use, the compounds of formula I, II or III are in accordance with the present invention suitably formulated into pharmaceutical formulations for oral administration. Also rectal, parenteral or any other route of administration may be contemplated to the skilled man in the art of formulations. Thus, the compounds of formula I, H or HI are formulated with at least one pharmaceutically and pharmacologically acceptable carrier or adjuvant. The carrier may be in the form of a solid, semi-solid or liquid diluent.
In the preparation of oral pharmaceutical formulations in accordance with the invention, the compound of formula I, II or HI to be formulated is mixed with solid, powdered ingredients such as lactose, saccharose, sorbitol, mannitol, starch, amylopectin, cellulose derivatives, gelatin, or another suitable ingredient, as well as with disintegrating agents and lubricating agents such as magnesium stearate, calcium stearate, sodium stearyl fumarate and polyethylene glycol waxes. The mixture is then processed into granules or compressed into tablets. Soft gelatine capsules may be prepared with capsules containing a mixture of the active compound or compounds of the invention, vegetable oil, fat, or other suitable vehicle for soft gelatine capsules. Hard gelatine capsules may contain the active compound in combination with solid powdered ingredients such as lactose, saccharose, sorbitol, mannitol, potato starch, corn starch, amylopectin, cellulose derivatives or gelatine.
Dosage units for rectal administration may be prepared (i) in the form of suppositories which contain the active substance(s) mixed with a neutral fat base; (ii) in the form of a gelatine rectal capsule which contains the active substance in a mixture with a vegetable oil, paraffin oil, or other suitable vehicle for gelatine rectal capsules; (iii) in the form of a ready-made micro enema; or (iv) in the form of a dry micro enema formulation to be reconstituted in a suitable solvent just prior to administration.
Liquid preparations for oral administration may be prepared in the form of syrups or suspensions, e.g. solutions or suspensions, containing the active compound and the remainder of the formulation consisting of sugar or sugar alcohols, and a mixture of ethanol, water, glycerol, propylene glycol and polyethylene glycol. If desired, such liquid preparations may contain colouring agents, flavouring agents, saccharine and carboxymethyl cellulose or other thickening agent. Liquid preparations for oral administration may also be prepared in the form of a dry powder to be reconstituted with a suitable solvent prior to use.
Solutions for parenteral administration may be prepared as a solution of a compound of the invention in a pharmaceutically acceptable solvent. These solutions may also contain stabilizing ingredients and/or buffering ingredients and are dispensed into unit doses in the form of ampoules or vials. Solutions for parenteral administration may also be prepared as a dry preparation to be reconstituted with a suitable solvent extemporaneously before use.
In one aspect of the present invention, the compound of formula I, π or IH may be administered once or twice daily, depending on the severity of the patient' s condition. Biological evaluation
Screening for compounds active against TLESR
Adult Labrador retrievers of both genders, trained to stand in a Pavlov sling, are used. Mucosa-to-skin esophagostomies are formed and the dogs are allowed to recover completely before any experiments are done.
Motϊlity measurement
In brief, after fasting for approximately 17 h with free supply of water, a multilumen sleeve/sidehole assembly (Dentsleeve, Adelaide, South Australia) is introduced through the esophagostomy to measure gastric, lower esophageal sphincter (LES) and esophageal pressures. The assembly is perfused with water using a low-compliance manometric perfusion pump (Dentsleeve, Adelaide, South Australia). An air-perfused tube is passed in the oral direction to measure swallows, and an antimony electrode monitored pH, 3 cm above the LES. All signals are amplified and acquired on a personal computer at 10 Hz.
When a baseline measurement free from fasting gastric/LES phase HI motor activity has been obtained, placebo (0.9% NaCl) or test compound is administered intravenously (i.v., 0.5 ml/kg) in a foreleg vein. Ten min after i.v. administration, a nutrient meal (10% peptone, 5% D-glucose, 5% Intralipid, pH 3.0) is infused into the stomach through the central lumen of the assembly at 100 ml/min to a final volume of 30 ml/leg. Immediately following the meal, air is insufflated at 40 ml/min. In an alternative model (Barostat model), the infusion of the nutrient meal is followed by air infusion at a rate of 500 ml/min until a intragastric pressure of lO±l mmHg is obtained. The pressure is then maintained at this level throughout the experiment using the infusion pump for further air infusion or for venting air from the stomach. The experimental time from start of nutrient infusion to end of air insufflation is 45 min. The procedure has been validated as a reliable means of triggering TLESRs. TLESRs is defined as a decrease in lower esophageal sphincter pressure (with reference to intragastric pressure) at a rate of >1 mmHg/s. The relaxation should not be preceded by a pharyngeal signal <2s before its onset in which case the relaxation is classified as swallow- induced. The pressure difference between the LES and the stomach should be less than 2 mmHg, and the duration of the complete relaxation longer than 1 s.

Claims

Claims
1. Use of a compound of formula IH, Ar!-L-Ar2 (IH) where Ar1 is an optionally substituted heterocyclic moiety and Ar2 is an optionally substituted carbocyclic moiety; wherein the L moiety is made up of 1-14 atoms; or a pharmaceutically acceptable salt or an optical isomer thereof, for the manufacture of a medicament for the inhibition of transient lower esophageal sphincter relaxations (TLESRs).
2. Use of a compound of formula in as defined in claim 1, or a pharmaceutically acceptable salt or an optical isomer thereof, for the manufacture of a medicament for the treatment of gastro-esophageal reflux disease (GERD).
3. Use of a compound of formula III as defined in claim 1, or a pharmaceutically acceptable salt or an optical isomer thereof, for the manufacture of a medicament for the prevention of reflux.
4. Use of a compound of formula III as defined in claim 1, or a pharmaceutically acceptable salt or an optical isomer thereof, for the manufacture of a medicament for the treatment of, or prevention of, regurgitation. 5. Use of a compound of formula IH as defined in claim 1, or a pharmaceutically acceptable salt or an optical isomer thereof, for the manufacture of a medicament for the treatment of, or prevention of, asthma.
6. Use according to claim 5, wherein the asthma is reflux-related asthma.
7. Use of a compound of formula HI as defined in claim 1, or a pharmaceutically acceptable salt or an optical isomer thereof, for the manufacture of a medicament for the treatment of, or prevention of, laryngitis.
8. Use of a compound of formula IH as defined in claim 1, or a pharmaceutically acceptable salt or an optical isomer thereof, for the manufacture of a medicament for the treatment of, or prevention of, lung disease.
9. Use of a compound of formula HI as defined in claim 1, or a pharmaceutically acceptable salt or an optical isomer thereof, for the manufacture of a medicament for managing failure to thrive.
10. Use according to any one of claims 1-9, wherein the compound is selected from the group of compounds consisting of 3-(2-pyridyl)-5-(3-methoxyphenyl)- 1,2,4- oxadiazole, 3-(2-pyridyl)-5-(3,5-dichlorophenyl)-l,2,4-oxadiazole, 3-(2-ρyridyl)- 5-(3-chlorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-chlorophenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-[3-(trifluoromethyl)phenyl]- 1 ,2,4-oxadiazole, 3-(2- ρyridyl)-5-(3-methylphenyl)- 1,2,4-oxadiazole, 3-(2-ρyridyl)-5-(l-naphthyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-[3-(trifluoromethoxy)phenyl]-l,2,4- oxadiazole, 3-(2- pyridyl)-5-(2,3-difluorophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl) -5-(2,5- difluorophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3,5-difluorophenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyanophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (3,5-dimethoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2,3-dichlorophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-chloro-5-cyanophenyl)-l,2,4-oxadiazole, 3- (2-ρyridyl)-5-(3-fluoro-5-cyanophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3- chloro-5-fluorophenyl)- 1,2,4-oxadiazole, 3-(5-chloropyrid-2-yl)-5-(3- cyanophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyanophenyl)-l,2,4- oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-fluorophenyl)-l,2,4-oxadiazole, 3-(3-fluoropyrid-2-yl)-5-(3-cyanophenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid-2- yl)-5-(3,5-dimethoxyphenyl)-l,2,4-oxadiazole, 3-(5-methoxypyrid-2-yl)-5-(3- cyanophenyl)- 1,2,4-oxadiazole, 3-(2-quinolinyl)-5-(3-cyanophenyl)-l,2,4- oxadiazole, 3-(3-chloro-5-trifluoromethylpyrid-2-yl)-5-(3-cyanophenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(5-chloro-2-methoxyphenyl)-l,2,4-oxadiazole, 3-(2- pyridyl)-5-(2-chloro-5-methylthiophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2- bromo-5-methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2,5,6- trifluorophenyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-nitrophenyl)-l ,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-bromophenyl)-l,2,4-oxadiazole, 2-(3,5- dichlorophenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(3-chlorophenyl)-4-(2-pyridyl)-l,3- oxazole, 2-(3-methoxyphenyl)-4-(2-pyridyl)- 1 ,3-oxazole, 2-(2-chlorophenyl)-4- (2-pyridyl)- 1,3-oxazole, 2-(3-trifluoiOphenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3- methyl phenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(l-naphthyl)-4-(2-pyridyl)-l,3- oxazole, 2-(3-trifluoromethoxyphenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(2,3- difluorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(2,5-difluorophenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(3,5-difluorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3- cyanophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3,5-dimethoxyphenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(2,3-dichlorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-chloro-5- cyanophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-fluoro-5-cyanophenyl)-4-(2- pyridyl)- 1,3-oxazole, 2-(3-chloro-5-fluorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3- cyanophenyl)-4-(5-chloropyrid-2-yl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(5- fluoropyrid- 2-yl)- 1,3-oxazole, 2-(3-cyano-5-fluorophenyl)-4-(5-fluoropyrid-2-yl)- 1,3-oxazole, 2-(3-cyanoρhenyl)-4-(3-fluoropyrid-2-yl)-l,3-oxazole, 2-(3,5- dimethoxyphenyl)-4-(5-fluoropyrid-2-yl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(5- methoxypyrid-2-yl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(2-quinolinyl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(3-chloro-5-trifluoromethylpyrid-2-yl)- 1 ,3-oxazole, 2-(5- chloro-2-methoxyphenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(2-chloro-5- methylthiophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(2-bromo-5-methoxyphenyl)-4-
(2-pyridyl)- 1,3-oxazole, 2-(2,5,6-trifluoroρhenyl)-4-(2-pyridyl)-l,3-oxazole, 2-[3- chlorophenyl]-4-[pyridin-2-yl]-l,3-oxazole, 2-(2,5,6-trifluorophenyl)-4-(2- pyridyl)- 1,3-oxazole, 2-(3-nitrophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3- bromophenyl)-4-(2-pyridyl)-l,3-oxazole and pharmaceutically acceptable salts or optical isomers thereof.
1. Use according to any one of claims 1-9, wherein the compound is selected from the group of compounds consisting of 3-(5-Methyl-pyrid-2-yl)-5-(3- cyanoρhenyl)-l ,2,4-oxadiazole, 3-(5-Cyano-pyrid-2-yl)-5-(3-cyanophenyl)-l ,2,4- oxadiazole, 3-(2-Pyridyl)-5-(5-bromo-2-methoxyphenyl)-l ,2,4-oxadiazole, 3-(2- Pyridyl)-5-(5-bromo-2-fluorophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano- 2-fluorophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-bromopyrid-3-yl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-(5-chloro-pyrid-3-yl)-l,2,4-oxadiazole, 3-(5- Cyanopyrid-2-yl)-5-(5-bromo-pyrid-3-yl)-l,2,4-oxadiazole, 3-(5-Fluoropyrid-2- yl)-5-(5-bromo-pyrid-3-yl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-thiomethoxy- pyrid-3-yl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-methylpyrid-3-yl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-(5-methoxypyrid-3-yl)-l ,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-cyano-5-methylphenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-fluoro- 5-bromophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-iodo-5-bromophenyl)-l,2,4- oxadiazole, 3-(5-Fluoro-2-pyridyl)-5-(3-fluoro-5-bromophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-iodo-5-(methylphenylester)-l ,2,4-oxadiazole, 3-(2-Pyridyl)-5- (3-methoxy-5-(methoxycarbonyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3- bromo-5-cyanophenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-3-iodophenyl)- 1 ,2,4-oxadiazole, 3-(5-Cyano-2-pyridyl)-5-(3-bromophenyl)-l ,2,4-oxadiazole, 3- (5-Cyano-2-pyridyl)-5-(3-cyano-5-fluorophenyl)-l,2,4-oxadiazole, 3-(5-Cyano-2- pyridyl)-5-(3-bromo-5-fluorophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano- 2-methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-cyano-5-methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-pyrid-3-yl)-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-cyano-5-(methoxycarbonyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)- 5-(5-phenyl-pyrid-3-yl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5- methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-hydroxyphenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-propoxyphenyl)-l ,2,4-oxadiazole, 2- (3-Cyanophenyl)-4-(pyridin-2-yl)- 1 ,3-thiazole, 2-((3-Bromo-5-iodophenyl)-4- pyridin-2-yl)- 1,3-oxazole, 2-(2-Pyridyl)-5-(3-iodophenyl)-l,3,4-oxadiazole, 2-(2- Pyridyl)-5-(3-cyanophenyl)-l,3,4-oxadiazole, 2-(2-Pyridyl)-5-(3-cyanophenyl)- 1,3,4-triazole, 3-(5-Chloropyrid-2-yl)-5-(3-cyano-5-fluorophenyl)-l,2,4- oxadiazole, 3-(5-Chloropyrid-2-yl)-5-(3-cyano-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5-Chloropyrid-2-yl)-5-(3-chloro-5-fluoroρhenyl)-l,2,4-oxadiazole, 3-(5- Chloropyrid-2-yl)-5-(3-cyano-5-methoxyphenyl)-l,2,4-oxadiazole, 3-(5- Fluoropyrid-2-yl)-5-(3-cyano-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5- Fluoropyrid-2-yl)-5-(3-fluoro-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5- Fluoropyrid-2-yl)-5-(3-cyano-5-methoxyphenyl)-l,2,4-oxadiazole, 3-(5- Cyanopyrid-2-yl)-5-(3-cyano-5-chlorophenyl)-l ,2,4-oxadiazole, 3-(5-Cyanopyrid- 2-yl)-5-(3-fluoro-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5-Cyanopyrid-2-yl)-5-(3- cyano-5-methoxyphenyl)- 1,2,4-oxadiazole, 3-(5-Fluoropyrid-2-yl)-5-(3,5-di- cyanophenyl)- 1 ,2,4-oxadiazole, 3-(3-(4-Dimethylaminobutoxy)-pyrid-2-yl)-5-(3- cyano-5-fluorophenyl)-l,2,4-oxadiazole, 3-(3-(5-Dimethylaminopentyloxy)- pyrid-2-yl)-5-(3-Cyano-5-fluorophenyl)-l,2,4-oxadiazole, and [3-(3-(6- Dimethylaminohexyloxy)-pyrid-2-yl)-5-(3-cyano-5-fluorophenyl)-l,2,4- and pharmaceutically acceptable salts or optical isomers thereof.
12. Use according to any one of claims 1-9, wherein the compound is selected from the group of compounds consisting of 3-(2-Pyridyl)-5-(3-allyloxy-5- (methoxycarbonyl)phenyl)-l ,2,4- oxadiazole, 3-(2-Pyridyl)~5-(3-N,N- dimethylaminophenyl)-l,2,4-oxadiazole), 3-(2-Pyridyl)-5-(3-cyano-5-(4- pyridyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-[2-methoxy-5-(4- pyridyl)phenyl]-l ,2,4- oxadiazole, 3-(2-pyridyl)-5-[2-fluoro-5-(4-pyridyl)phenyl]- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-fluoro-5-(4-pyridyl)ρhenyl)- 1,2,4- oxadiazole, 3- (2-Pyridyl)-5-(3-fluoro-5-(3-pyridyl) phenyl)- 1,2,4-oxadiazole, 3- (2-Pyridyl)-5-[2-fluoro-5-(3-pyridyl)phenyl]-l,2,4-oxediazole, 3-(2-Pyridyl)-5-[2- methoxy-5-(3-pyridyl)phenyl]-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-(3- pyridyl)phenyl)- 1,2,4-oxadiazole, 3-(5-Fluoro-2-pyridyl)-5-(3-fluoro-5-(3- pyridyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-[5-(3-pyridyl-pyrid-3-yl)]-]- 1,2,4-oxadiazole, 3-(5-Fluoropyrid-2-yl)]-5-[5-(3-ρyridyl-pyrid-3-yl)]-3-l,2,4- oxadiazole, 3-(5-Cyanopyrid-2-yl)-5-(3-(pyrid-3-yl)phenyl)- 1 ,2,4-oxadiazole, to 3-(5-Cyanopyrid-2-yl)-5-(3-fluoro-5- (pyrid-3-yl)phenyl)-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-cyano-5- (2-ρyridyl)ρhenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-[2- methoxy-5-(2-pyridyl)phenyl]-l,2,4-oxediazole, 3-(2-Pyridyl)-5-[2-fluoro-5- (2- pyridyl)phenyl]- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-[(3-(3-fluorophenyl)-5- fluorophenyl)]- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3- cyano-5-(3- thiophene)phenyl)- 1,2,4-oxadiazole, 3- (2-Pyridyl)-5-[5-(3-thienyl)-pyrid-3-yl]- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-[5-3-furyl)-pyrid-3-yl]-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-[5-(3-methoxyphenyl)-pyrid-3-yl]-l,2,4-oxadiazole, 3-(2-Pyridyl)-5- (3-cyano-5-(5-pyrimidyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)- 5-(3-cyano-5- (3-aminophenyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl) -5-(3-cyano-5-(3- fluorophenyl)phenyl)-l,2,4-oxediazole, 3-(2-Pyridyl)-5-[5-(5-pyrimidyl)-pyrid-3- yl]-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-aminomethyl-5-cyanophenyl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-[5[(2-propenyl)-pyrid-3-yl]-l,2,4-oxediazole, 3-(2- Pyridyl)-5- (3-cyano-5-vinylphenyl)-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-cyano- 5-(2-hydroxyethyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-(2,3- dichloropropoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-allyloxy-5- carboxyphenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-allyloxy-5-cyanophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-3-[3-hydroxypropyn-l-yl]phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-N-methylaminophenyl)-l,2,4-oxadiazole, and 3-(2-Pyridyl)-5- [5-(3-N-benzyl-l,2,5,6, tetrahydropyridine)-pyrid-3-yl]- 1,2,4-oxadiazole.
13. Use according to any one of claims 1-9, wherein the compound is selected from the group of compounds consisting of 3-(2-pyridyl)-5-(3-fluorophenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(2,3-dimethoxyphenyl)-l,2,4-oxadiazole, 3-(2- pyridyl)-5-(3-phenoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3- benzoylphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-chloro-5- (trifluoromethyl)phenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3 ,4,5- trifluorophenyl)- 1 ,2,4-oxadiazole, 3-(3-methoxyphenyl)-5-(2-pyridyl)- 1 ,2,4- oxadiazole, 3-(pyrid-2-yl)-5-(2-hydroxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5- (5-chloro-2-hydroxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-aminophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(5-chloro-2-aminophenyl)- 1,2,4-oxadiazole, 5- [3-hydroxyphenyl]-3-[pyridin-2-yl]-l,2-oxazole, 5-[3-cyanophenyl]-3-[pyridin-2- yl]-l,2-oxazole, 3-(2-pyridyl)-5-(3-chlorophenyl)-l,2,4-triazole, 3-(2-pyridyl)-5- (3-iodophenyl)-l,2,4-triazole, 3-(2-pyridyl)-5-(5-hydroxypyrid-3-yl)-l,2,4- oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(5-fluoro-3-(thiomethyl)phenyl)-l,2,4- oxadiazole, 5-(2-pyridyl)-3-[3-(lH-imidazol-l-yl)-5-fluorophenyl)]-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)-l,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-fluoro-5-trifluoromethylphenyl)-l,2,4-oxadiazole, 3- (5-cyanopyrid-2-yl)-5-(3-alloxy-5-cyanophenyl)-l,2,4-oxadiazole, 3-(5- fluoropyrid-2-yl)-5-(3-alloxy-5-cyanophenyl)-l,2,4-oxadiazole, 3-(5-cyanopyrid- 2-yl)-5-(3-cyano-5-propoxyphenyl)-l ,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3- cyano-5-propoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- nitrophenyl)- 1 ,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-nitrophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-dimethylaminophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-(2-methoxyethoxy)phenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-(lH-imidazol-l- ylmethyl)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- (methoxymethyl)phenyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-methoxyphenyl)-5-(2- pyridyl)- 1 ,2,4-oxadiazole, 3-(3-cyano-5-methoxyphenyl)-5-(5-fluoropyrid-2-yl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-ethoxyphenyl)-l,2,4- oxadiazole, 3-(5-cyanopyrid-2-yl)-5-(3-cyano-5-ethoxyphenyl)- 1,2,4-oxadiazole,
3-(5-chloropyrid-2-yl)-5-(3-allyloxy-5-cyanophenyl)-l,2,4-oxadiazole, 3-(5- chloropyrid-2-yl)-5-(3-cyano-5-propoxyphenyl)-l,2,4-oxadiazole, 3-(5- chloropyrid-2-yl)-5-(3-cyano-5-ethoxyphenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid- 2-yl)-5-(3-cyano-5-hexyloxyphenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5- (3-cyano-5-(methoxymethyl)phenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-
(5-cyano-2-methoxyphenyl)- 1,2,4-oxadiazole, 5-(5-cyano-2-methoxyphenyl)-3- (5-cyano-pyrid-2-yl)- 1,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-(3- bromophenyl)- 1,2,4-oxadiazole, 5-(3-chloro-5-methyl-pyrid-4-yl)-3-(2-pyridyl)- 1,2,4-oxadiazole, 5-(3-chloro-5-methoxy-pyrid-4-yl)-3-(2-pyridyl)-l,2,4- oxadiazole, 3-(3-cyano-5-methylphenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(5- bromo-pyrid-3-yl)-5-(2-pyridyl)- 1 ,2,4-oxadiazole, 3-(3-cyano-5-fluorophenyl)-5- (2-pyridyl)- 1,2,4-oxadiazole, 3-(3-iodophenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3- (3-cyanophenyl)-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-dimethylamino- phenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(3-cyano-5-methylphenyl)-5-(5-fluoro- pyrid-2-yl)- 1,2,4-oxadiazole, 3-(3-cyano-5-fluorophenyl)-5-(5-fluoro-pyrid-2-yl)-
1,2,4-oxadiazole, 3-(4-cyanophenyl)-3-(6-cyano-pyrid-2-yl)-l,2,4-oxadiazole, 5- (3-cyano-5-trifluoromethoxyphenyl)-3-(2-pyridyl)-l,2,4-oxadiazole, 5-(3- methoxycarbonyl-5-trifluoromethoxyphenyl)-3-(2-pyridyl)- 1 ,2,4-oxadiazole, 5- (3-cyano-5-trifluoromethoxyphenyl)-3-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 3- (5-cyano-pyrid-2-yl)-5-(3-cyano-5-trifluoromethoxyphenyl)-l,2,4-oxadiazole, 3- (3-cyano-5-dimethylaminophenyl)-5-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 5-(5- chloro-pyrid-2-yl)-3-(3-cyano-5-dimethylaminophenyl)-l,2,4-oxadiazole, 5-(5- chloro-pyrid-2-yl)-3-(3-cyano-5-methoxyphenyl)- 1 ,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(6-cyano-4-methoxy-pyrid-2-yl)-l,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(6-cyano-4-hydroxy-pyrid-2-yl)-l,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(3-cyano-5-trifluoromethoxyphenyl)-l,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(3-cyanophenyl)- 1,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(3- cyano-5-methylphenyl)-l,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(3-cyano-5- fluorophenyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-trifluoromethoxyphenyl)-5-(2- pyridyl)- 1,2,4-oxadiazole, 3-(3-fluoro-5-methoxyphenyl)-5-(2-pyridyl)- 1,2,4- oxadiazole, 3-(3-cyanoρhenyl)-5-(5-fluoro-pyrid-2-yl)-l ,2,4-oxadiazole, 3-(3- cyano-5-trifluoromethoxyphenyl)-5-(5-fluoro-pyrid-2-yl)-l ,2,4-oxadiazole, 3-(3- fluoro-5-methoxyphenyl)-5-(5-fluoropyrid-2-yl)- 1,2,4-oxadiazole, 3-(3,5- dimethoxyphenyl)-5-(5-fluoropyrid-2-yl)- 1,2,4-oxadiazole, 3-[3-fluoro-5-(lH- imidazol-l-yl)phenyl]-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3- fluoro-5-(3-pyridyl)phenyl)-l,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-bromo- 5-(3-pyridyl)phenyl)- 1,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-fluoro-5- methoxyphenyl)-l ,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-cyano-5- thiomethylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-(3-cyano-5- thiomethylphenyl)- 1 ,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5- thiomethylphenyl)- 1,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5- thiomethylsulphoxidephenyl)- 1,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5- thioethylphenyl)-l ,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(5-fluoro-3- thiotertbutylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5- methylphenyl)- 1 ,2,4-oxadiazole, 3-(5-cyanopyrid-2-yl)-5-(3-cyano-5- thiomethylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(4-cyano-2-thienyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)-l ,2,4- oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)-l,2,4- oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-[3-(3-pyridyl)phenyl]-l,2,4-oxadiazole, 5- [3-methyl-5-(3-pyridyl)-pyrid-4-yl]-3-(2-pyridyl)-l,2,4-oxadiazole, 5-[3- methoxy-5-(3-pyridyl)-pyrid-4-yl]-3-(2-pyridyl)- 1 ,2,4-oxadiazole, 5-(2-pyridyl)- 3-[5-(3-pyridyl)-pyrid-3-yl]-l,2,4-oxadiazole, 5-(2-pyridyl)-3-[3-(3-pyridyl)- phenyl]-l,2,4-oxadiazole, 5-(5-fluoro-pyrid-2-yl)-3-[3-fluoro-5-(3-pyridyl)- phenyl] -1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-carboxy-5-methoxyphenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-(carboxamido)-5-methoxyphenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2-N,N-dimethylaminoethoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-ρyridyl)-5-(3-cyano-5-(N,N- dimethylaminopropoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2- aminoethoxy)phenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2- hydroxyethoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- isopropoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-ethoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2,2,2-trifluoroethoxy)phenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-cyclopropylmethoxyphenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-amino-5-cyanophenyl)-l,2,4-oxadiazole, 3-(5- fluoropyrid-2-yl)-5-(3-amino-5-cyanophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (3-cyano-5-(trifluoromethylsulfonyloxy)phenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)- 5-(3-cyano-5-(2-methoxy-2-oxoethoxy)phenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (3-cyano-5-(2-tert-butoxy-2-oxoethoxy)phenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (3-cyano-5-(methoxymethoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3- cyano-5-(methoxyethoxy)phenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3- cyano-5-cyclopentylaminophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- hexyloxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- (dimethylamino)carbonylphenyl)- 1 ,2,4-oxadiazole, 3-(5-fluoroρyrid-2-yl)-5-(3- cyano-5-ethylaminophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-
5-diethylaminophenyl)- 1 ,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-[3-fluoro-5- (lH-tetraazol-5-yl)-phenyl]-l,2,4-oxadiazole, 5-[3-fluoro-5-(l-methyl-lH- tetraazol-5-yl)-phenyl]-3-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 3-(5-fluoro-2- pyridyl)-5-(3-(l-benzyl-l,2,5,6-tetrahydropyridin-3-yl)-5-fluorophenyl)-l,2,4- oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-fluoro-5-(lH-imidazol-4-yl)phenyl)-l,2,4- oxadiazole, l-(3-cyanophenyl)-4-(5-fluoro-2-pyridyl)-lΗ-imidazole, 3-(2- pyridyl)-5-(3-(lH-imidazol-l-yl)-5-thiomethoxyphenyl)-l,2,4-oxadiazole, 3-(3- cyano-5-(lH-imidazol-l-yl)phenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(2-pyridyl)- 5-(3-cyano-5-(lH-imidazol-l-yl)phenyl)-l,2,4-oxadiazole, 2-(3-iodophenyl)-4- (pyridin-2-yl)-l,3-thiazole, 3-(2-pyridyl)-2-(3-cyanophenyl)-furan, 3-(5-fluoro-2- pyridyl)-2-(3-cyanophenyl)-furan, 3-(5-chloro-2-pyridyl)-2-(3-cyanophenyl)- furan, 2-(2-pyridyl)-5-(5-fluoro-3-(l-imidazolyl)phenyl)-furan, 3-(5-(2-pyridyl)- 2-furyl)-benzonitrile, 3-(5-(5-chloro-2-pyridyl)-2-furyl)-benzonitrile, 3-(5-(5- cyano-2-pyridyl)-2-furyl)-benzonitrile, 3-(5-(5-fluoro-2-pyridyl)-2-furyl)- benzonitrile, 3-fluoro-5-(5-(2-pyridyl)-2-furyl)-benzonitrile, 2-(3-cyanophenyl)-4- (5-fluoropyrid-2-yl)-l,3-oxazole, 2-(3-cyano-5-fluorophenyl)-4-(5-fluoropyrid-2- yl)-l,3-oxazole, 2-(3-cyano-5-fluorophenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(5- allyloxy-3-cyanophenyl)-4-(5-fluoropyrid-2-yl)-l,3-oxazole, 2-(3-cyano-5- methoxyphenyl)-4-(pyrid-2-yl)- 1 ,3-oxazole, 2-(3-cyano-5-methoxyphenyl)-4-(5- fluoropyrid-2-yl)-l,3-oxazole, 2-(3-cyano-5-n-propyloxyphenyl)-4-(5- fluoropyrid-2-yl)- 1,3-oxazole, and 2-(3-cyano-5-methoxyphenyl)-4-(4-pyrid-2- yl)-5-chloro- 1,3-oxazole.
14. A method for the inhibition of transient lower esophageal sphincter relaxations (TLESRs), whereby a pharmaceutically and pharmacologically effective amount of a compound of formula in,
Arx-L-Ar2 (III) where Ar1 is an optionally substituted heterocyclic moiety and Ar2 is an optionally substituted carbocyclic moiety; wherein the L moiety is made up of 1-14 atoms; or a pharmaceutically acceptable salt or an optical isomer thereof; or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such inhibition.
15. A method for the treatment of gastro-esophageal reflux disease (GERD), whereby a pharmaceutically and pharmacologically effective amount of a compound of formula HI as defined in claim 14, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment.
16. A method for the prevention of reflux, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula IH as defined in claim 14, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such prevention.
17. A method for the treatment of, or prevention of, regurgitation, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula III as defined in claim 14, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment or prevention.
18. A method for the prevention of, or treatment of, lung disease, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula in as defined in claim 14, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment or prevention.
19. A method for managing failure to thrive, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula III as defined in claim 14, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such management.
20. A method for treatment or prevention of asthma, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula HI as defined in claim 14, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment or prevention.
21. A method according to claim 18, wherein the asthma is reflux-related asthma.
22. A method for treatment or prevention of laryngitis, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula IH as defined in claim 14, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment or prevention.
23. A method according to any one of claims 14-22, wherein the compound of formula HI is selected from the group of compounds consisting of 3-(2-pyridyl)-5- (3-methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3,5-dichlorophenyl)- 1,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-chlorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2- chlorophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-[3-(trifluoromethyl)phenyl]- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-methylphenyl)-l,2,4-oxadiazole, 3-(2- pyridyl)-5-(l-naphthyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-[3- (trifluoromethoxy)phenyl]- 1,2,4- oxadiazole, 3-(2-pyridyl)-5-(2,3- difluorophenyl)-l ,2,4-oxadiazole, 3-(2-pyridyl) -5-(2,5-difluorophenyl)- 1 ,2,4- oxadiazole, 3-(2-pyridyl)-5-(3,5-difluorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)~ 5-(3-cyanophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3,5-dimethoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2,3-dichlorophenyl)-l,2,4-oxadiazole, 3-(2- pyridyl)-5-(3-chloro-5-cyanophenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-fluoro- 5-cyanophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-chloro-5-fluorophenyl)- 1,2,4-oxadiazole, 3-(5-chloropyrid-2-yl)-5-(3-cyanophenyl)- 1,2,4-oxadiazole, 3- (5-fluoropyrid-2-yl)-5-(3-cyanophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)- 5-(3-cyano-5-fluorophenyl)- 1,2,4-oxadiazole, 3-(3-fluoropyrid-2-yl)-5-(3- cyanophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3,5-dimethoxyphenyl)- 1,2,4-oxadiazole, 3-(5-methoxypyrid-2-yl)-5-(3-cyanophenyl)- 1,2,4-oxadiazole, 3-(2-quinolinyl)-5-(3-cyanophenyl)- 1,2,4-oxadiazole, 3-(3-chloro-5- trifluoromethylpyrid-2-yl)-5-(3-cyanophenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5- (5-chloro-2-methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-chloro-5- methylthiophenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-bromo-5- methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2,5,6-trifluorophenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-nitrophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3- bromophenyl)- 1,2,4-oxadiazole, 2-(3,5-dichlorophenyl)-4-(2-pyridyl)-l,3- oxazole, 2-(3-chlorophenyl)-4-(2-pyridyl)- 1 ,3-oxazole, 2-(3-methoxyphenyl)-4- (2-pyridyl)- 1,3-oxazole, 2-(2-chloroρhenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(3- trifluorophenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(3-methyl phenyl)-4-(2-pyridyl)-l,3- oxazole, 2-(l-naphthyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-trifluoromethoxyphenyl)- 4-(2-pyridyl)-l,3-oxazole, 2-(2,3-difluorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2- (2,5-difluorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3,5-difluorophenyl)-4-(2- pyridyl)- 1,3-oxazole, 2-(3-cyanophenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(3,5- dimethoxyphenyl)-4-(2-pyridyl)- 1 ,3-oxazole, 2-(2,3-dichlorophenyl)-4-(2- pyridyl)-l,3-oxazole, 2-(3-chloro-5-cyanophenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(3- fluoro-5-cyanophenyl)-4-(2-pyridyl)- 1 ,3-oxazole, 2-(3-chloro-5-fluorophenyl)-4- (2-pyridyl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(5-chloropyrid-2-yl)-l,3-oxazole, 2- (3-cyanophenyl)-4-(5-fluoropyrid-2-yl)- 1 ,3-oxazole, 2-(3-cyano-5-fluorophenyl)- 4-(5-fluoropyrid-2-yl)- 1 ,3-oxazole, 2-(3-cyanophenyl)-4-(3-fluoropyrid-2-yl)- 1 ,3- oxazole, 2-(3,5-dimethoxyphenyl)-4-(5-fluoropyrid-2-yl)-l,3-oxazole, 2-(3- cyanophenyl)-4-(5-methoxypyrid-2-yl)-l,3-oxazole, 2-(3-cyanophenyl)-4-(2- quinolinyl)-l ,3-oxazole, 2-(3-cyanophenyl)-4-(3-chloro-5-trifluoromethylpyrid-2- yl)-l,3-oxazole, 2-(5-chloro-2-methoxyphenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(2- chloro-5-methylthiophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(2-bromo-5- methoxyphenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(2,5,6-trifluorophenyl)-4-(2- pyridyl)- 1,3-oxazole, 2-[3-chlorophenyl]-4-[pyridin-2-yl]-l,3-oxazole, 2-(2,5,6- trifluorophenyl)-4-(2-pyridyl)-l,3-oxazole, 2-(3-nitrophenyl)-4-(2-pyridyl)- 1,3- oxazole, 2-(3-bromophenyl)-4-(2-pyridyl)- 1,3-oxazole and pharmaceutically acceptable salts or optical isomers thereof.
24. A method according to any one of claims 14-22, wherein the compound of formula HI is selected from the group of compounds consisting of 3-(5-Methyl- pyrid-2-yl)-5-(3-cyanophenyl)- 1,2,4-oxadiazole, 3-(5-Cyano-pyrid-2-yl)-5-(3- cyanophenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-bromo-2-methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-bromo-2-fluorophenyl)-l,2,4-oxadiazole, 3- (2-Pyridyl)-5-(5-cyano-2-fluorophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5- bromopyrid-3-yl)-l ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-chloro-pyrid-3-yl)-l ,2,4- oxadiazole, 3-(5-Cyanopyrid-2-yl)-5-(5-bromo-pyrid-3-yl)-l,2,4-oxadiazole, 3-(5- Fluoropyrid-2-yl)-5-(5-bromo-ρyrid-3-yl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2- thiomethoxy-pyrid-3-yl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-methylpyrid-3-yl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-methoxypyrid-3-yl)-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-cyano-5-methylphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-fluoro- 5-bromophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-iodo-5-bromophenyl)- 1,2,4- oxadiazole, 3-(5-Fluoro-2-pyridyl)-5-(3-fluoro-5-bromophenyl)-l ,2,4-oxadiazole,
3-(2-Pyridyl)-5-(3-iodo-5-(methylρhenylester)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5- (3-methoxy-5-(methoxycarbonyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3- bromo-5-cyanophenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-3-iodophenyl)- 1,2,4-oxadiazole, 3-(5-Cyano-2-pyridyl)-5-(3-bromophenyl)-l,2,4-oxadiazole, 3- (5-Cyano-2-pyridyl)-5-(3-cyano-5-fluorophenyl)-l ,2,4-oxadiazole, 3-(5-Cyano-2- pyridyl)-5-(3-bromo-5-fluorophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano- 2-methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-cyano-5-methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-pyrid-3-yl)-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-cyano-5-(methoxycarbonyl)phenyl)-l,2,4-oxadiazole, 3-(2-Pyridyl)- 5-(5-phenyl-pyrid-3-yl)-l ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5- methoxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-hydroxyphenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-propoxyphenyl)- 1,2,4-oxadiazole, 2- (3-Cyanophenyl)-4-(pyridin-2-yl)-l,3-thiazole, 2-((3-Bromo-5-iodophenyl)-4- pyridin-2-yl)-l,3-oxazole, 2-(2-Pyridyl)-5-(3-iodophenyl)-l,3,4-oxadiazole, 2-(2- Pyridyl)-5-(3-cyanophenyl)-l ,3,4-oxadiazole, 2-(2-Pyridyl)-5-(3-cyanophenyl)-
1,3,4-triazole, 3-(5-Chloropyrid-2-yl)-5-(3-cyano-5-fluorophenyl)- 1,2,4- oxadiazole, 3-(5-Chloropyrid-2-yl)-5-(3-cyano-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5-Chloropyrid-2-yl)-5-(3-chloro-5-fluorophenyl)-l,2,4-oxadiazole, 3-(5- Chloropyrid-2-yl)-5-(3-cyano-5-methoxyphenyl)- 1 ,2,4-oxadiazole, 3-(5- Fluoropyrid-2-yl)-5-(3-cyano-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5-
Fluoroρyrid-2-yl)-5-(3-fluoro-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5- Fluoropyrid-2-yl)-5-(3-cyano-5-methoxyphenyl)- 1,2,4-oxadiazole, 3-(5- Cyanopyrid-2-yl)-5-(3-cyano-5-chlorophenyl)-l,2,4-oxadiazole, 3-(5-Cyanopyrid- 2-yl)-5-(3-fluoro-5-chlorophenyl)- 1,2,4-oxadiazole, 3-(5-Cyanopyrid-2-yl)-5-(3- cyano-5-methoxyphenyl)- 1,2,4-oxadiazole, 3-(5-Fluoropyrid-2-yl)-5-(3,5-di- cyanophenyl)- 1,2,4-oxadiazole, 3-(3-(4-Dimethylaminobutoxy)-pyrid-2-yl)-5-(3- cyano-5-fluorophenyl)- 1,2,4-oxadiazole, 3-(3-(5-Dimethylaminopentyloxy)- pyrid-2-yl)-5-(3-Cyano-5-fluorophenyl)-l,2,4-oxadiazole, and [3-(3-(6- Dimethylaminohexyloxy)-pyrid-2-yl)-5-(3-cyano-5-fluorophenyl)-l,2,4- oxadiazole and pharmaceutically acceptable salts or optical isomers thereof.
25. A method according to any one of claims 14-22, wherein the compound of formula in is selected from the group of compounds consisting of 3-(2-Pyridyl)- 5-(3-allyloxy-5-(methoxycarbonyl)phenyl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-(3- N,N-dimethylaminophenyl)- 1,2,4-oxadiazole), 3-(2-Pyridyl)-5-(3-cyano-5-(4- pyridyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-[2-methoxy-5-(4- pyridyl)phenyl]-l,2,4- oxadiazole, 3-(2-pyridyl)-5-[2-fluoro-5-(4-pyridyl)phenyl]- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-fluoro-5-(4-pyridyl)phenyl)-l,2,4- oxadiazole, 3- (2-Pyridyl)-5-(3-fluoro-5-(3-pyridyl) phenyl)- 1,2,4-oxadiazole, 3- (2-Pyridyl)-5-[2-fluoro-5-(3-pyridyl)phenyl]-l,2,4-oxediazole, 3-(2-Pyridyl)-5-[2- methoxy-5-(3-pyridyl)phenyl]-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-(3- pyridyl)phenyl)-l ,2,4-oxadiazole, 3-(5-Fluoro-2-pyridyl)-5-(3-fluoro-5-(3- pyridyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-[5-(3-pyridyl-pyrid-3-yl)]-]- 1,2,4-oxadiazole, 3-(5-Fluoropyrid-2-yl)]-5-[5-(3-pyridyl-pyrid-3-yl)]-3-l,2,4- oxadiazole, 3-(5-Cyanopyrid-2-yl)-5-(3-(pyrid-3-yl)phenyl)-l ,2,4-oxadiazole, to 3-(5-Cyanopyrid-2-yl)-5-(3-fluoro-5- (pyrid-3-yl)phenyl)-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-cyano-5- (2-pyridyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-[2- methoxy-5-(2-pyridyl)phenyl]-l,2,4-oxediazole, 3-(2-Pyridyl)-5-[2-fluoro-5- (2- pyridyl)phenyl]-l,2,4-oxadiazole, 3-(2-Pyridyl)-5-[(3-(3-fluorophenyl)-5- fluorophenyl)]- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3- cyano-5-(3- thiophene)phenyl)- 1 ,2,4-oxadiazole, 3- (2-Pyridyl)-5-[5-(3-thienyl)-pyrid-3-yl]- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-[5-3-furyl)-pyrid-3-yl]-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-[5-(3-methoxyphenyl)-pyrid-3-yl]-l,2,4-oxadiazole, 3-(2-Pyridyl)-5- (3-cyano-5-(5-pyrimidyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)- 5-(3-cyano-5- (3-aminophenyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl) -5-(3-cyano-5-(3- fluorophenyl)phenyl)-l,2,4-oxediazole, 3-(2-Pyridyl)-5-[5-(5-pyrimidyl)-pyrid-3- yl]- 1,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-aminomethyl-5-cyanophenyl)-l,2,4- oxadiazole, 3-(2-Pyridyl)-5-[5[(2-propenyl)-pyrid-3-yl]-l,2,4-oxediazole, 3-(2- Pyridyl)-5- (3-cyano-5-vinylphenyl)-l,2,4-oxadiazole, 3-(2- Pyridyl)-5-(3-cyano- 5-(2-hydroxyethyl)phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-cyano-5-(2,3- (iichloropropoxy)phenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-allyloxy-5- carboxyphenyl)- 1 ,2,4-oxadiazole, 3-(2-Pyridyl)-5-(3-allyloxy-5-cyanophenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(5-cyano-3-[3-hydroxypropyn-l-yl]phenyl)- 1,2,4-oxadiazole, 3-(2-Pyridyl)-5-(2-N-methylaminophenyl)- 1,2,4-oxadiazole, and 3-(2-Pyridyl)-5- [5-(3-N-benzyl-l, 2,5,6, tetrahydropyridine)-pyrid-3-yl]- 1,2,4-oxadiazole.
26. A method according to any one of claims 14-22, wherein the compound of formula HI is selected from the group of compounds consisting of 3-(2-pyridyl)-5- (3-fhιorophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2,3-dimethoxyphenyl)- 1,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-phenoxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (3-benzoylphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-chloro-5- (trifluoromethyl)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3,4,5- trifluorophenyl)- 1,2,4-oxadiazole, 3-(3-methoxyphenyl)-5-(2-pyridyl)-l,2,4- oxadiazole, 3-(pyrid-2-yl)-5-(2-hydroxyphenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (5-chloro-2-hydroxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(2-aminophenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(5-chloro-2-aminophenyl)-l ,2,4-oxadiazole, 5- [3-hydroxyphenyl]-3-[pyridin-2-yl]-l,2-oxazole, 5-[3-cyanophenyl]-3-[pyridin-2- yl]-l,2-oxazole, 3-(2-pyridyl)-5-(3-chlorophenyl)-l,2,4-triazole, 3-(2-pyridyl)-5- (3-iodophenyl)-l,2,4-triazole, 3-(2-pyridyl)-5-(5-hydroxypyrid-3-yl)-l,2,4- oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(5-fluoro-3-(thiomethyl)phenyl)- 1 ,2,4- oxadiazole, 5-(2-pyridyl)-3-[3-(lH-imidazol-l-yl)-5-fluorophenyl)]-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)-l,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-fluoro-5-trifluoromethylphenyl)-l ,2,4-oxadiazole, 3- (5-cyanopyrid-2-yl)-5-(3-alloxy-5-cyanophenyl)- 1,2,4-oxadiazole, 3-(5- fluoropyrid-2-yl)-5-(3-alloxy-5-cyanophenyl)- 1,2,4-oxadiazole, 3-(5-cyanopyrid- 2-yl)-5-(3-cyano-5-propoxyphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3- cyano-5-propoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- nitrophenyl)-l ,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-nitrophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-dimethylaminophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-(2-methoxyethoxy)phenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-(lH-imidazol-l- ylmethyl)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- (methoxymethyl)phenyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-methoxyphenyl)-5-(2- pyridyl)- 1 ,2,4-oxadiazole, 3-(3-cyano-5-methoxyphenyl)-5-(5-fluoropyrid-2-yl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5-ethoxyphenyl)-l,2,4- oxadiazole, 3-(5-cyanopyrid-2-yl)-5-(3-cyano-5-ethoxyphenyl)- 1,2,4-oxadiazole, 3-(5-chloropyrid-2-yl)-5-(3-allyloxy-5-cyanophenyl)-l,2,4-oxadiazole, 3-(5- chloropyrid-2-yl)-5-(3-cyano-5-propoxyphenyl)-l,2,4-oxadiazole, 3-(5- chloropyrid-2-yl)-5-(3-cyano-5-ethoxyphenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid- 2-yl)-5-(3-cyano-5-hexyloxyphenyl)-l ,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-
(3-cyano-5-(methoxymethyl)phenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5- (5-cyano-2-methoxyphenyl)-l,2,4-oxadiazole, 5-(5-cyano-2-methoxyphenyl)-3- (5-cyano-pyrid-2-yl)-l,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-(3- bromophenyl)- 1,2,4-oxadiazole, 5-(3-chloro-5-methyl-pyrid-4-yl)-3-(2-pyridyl)- 1,2,4-oxadiazole, 5-(3-chloro-5-methoxy-pyrid-4-yl)-3-(2-pyridyl)- 1,2,4- oxadiazole, 3-(3-cyano-5-methylphenyl)-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(5- bromo-pyrid-3-yl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(3-cyano-5-fluorophenyl)-5- (2-pyridyl)- 1,2,4-oxadiazole, 3-(3-iodophenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3- (3-cyanophenyl)-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(3-cyano-5-dimethylamino- phenyl)-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-methylphenyl)-5-(5-fluoro- pyrid-2-yl)- 1,2,4-oxadiazole, 3-(3-cyano-5-fluorophenyl)-5-(5-fluoro-pyrid-2-yl)- 1,2,4-oxadiazole, 3-(4-cyanophenyl)-3-(6-cyano-pyrid-2-yl)- 1,2,4-oxadiazole, 5- (3-cyano-5-trifluoromethoxyphenyl)-3-(2-pyridyl)-l,2,4-oxadiazole, 5-(3- methoxycarbonyl-5-trifluoromethoxyphenyl)-3-(2-pyridyl)-l,2,4-oxadiazole, 5- (3-cyano-5-trifluoromethoxyphenyl)-3-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 3-
(5-cyano-pyrid-2-yl)-5-(3-cyano-5-trifluoromethoxyphenyl)- 1,2,4-oxadiazole, 3- (3-cyano-5-dimethylaminophenyl)-5-(5-fluoro-pyrid-2-yl)- 1 ,2,4-oxadiazole, 5-(5- chloro-pyrid-2-yl)-3-(3-cyano-5-dimethylaminophenyl)-l,2,4-oxadiazole, 5-(5- chloro-pyrid-2-yl)-3-(3-cyano-5-methoxyphenyl)- 1 ,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(6-cyano-4-methoxy-pyrid-2-yl)-l ,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(6-cyano-4-hydroxy-pyrid-2-yl)-l,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(3-cyano-5-trifluoromethoxyphenyl)-l,2,4-oxadiazole, 5-(5-chloro- pyrid-2-yl)-3-(3-cyanophenyl)- 1,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(3- cyano-5-methylphenyl)- 1,2,4-oxadiazole, 5-(5-chloro-pyrid-2-yl)-3-(3-cyano-5- fluorophenyl)- 1,2,4-oxadiazole, 3-(3-cyano-5-trifluoromethoxyphenyl)-5-(2- pyridyl)- 1,2,4-oxadiazole, 3-(3-fluoro-5-methoxyphenyl)-5-(2-pyridyl)-l,2,4- oxadiazole, 3-(3-cyanophenyl)-5-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 3-(3- cyano-5-trifluoromethoxyphenyl)-5-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 3-(3- fluoro-5-methoxyphenyl)-5-(5-fluoropyrid-2-yl)-l,2,4-oxadiazole, 3-(3,5- dimethoxyρhenyl)-5-(5-fluoropyrid-2-yl)-l,2,4-oxadiazole, 3-[3-fluoro-5-(lH- imidazol-l-yl)phenyl]-5-(2-pyridyl)-l,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3- fluoro-5-(3-pyridyl)phenyl)-l ,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-bromo-
5-(3-pyridyl)phenyl)- 1,2,4-oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-fTuoro-5- methoxyphenyl)-l ,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-cyano-5- thiomethylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-(3-cyano-5- thiomethylphenyl)- 1,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5- thiomethylphenyl)- 1,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5- thiomethylsulphoxidephenyl)- 1 ,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(3-fluoro-5- thioethylphenyl)- 1,2,4-oxadiazole, 3-(pyrid-2-yl)-5-(5-fluoro-3- thiotertbutylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano-5- methylphenyl)- 1,2,4-oxadiazole, 3-(5-cyanopyrid-2-yl)-5-(3-cyano-5- thiomethylphenyl)- 1 ,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(4-cyano-2-thienyl)-
1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)-l,2,4- oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-cyano-5-trifluoromethylphenyl)- 1 ,2,4- oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-[3-(3-pyridyl)phenyl]-l ,2,4-oxadiazole, 5- [3-methyl-5-(3-pyridyl)-pyrid-4-yl]-3-(2-pyridyl)-l,2,4-oxadiazole, 5-[3- methoxy-5-(3-pyridyl)-pyrid-4-yl]-3-(2-pyridyl)- 1 ,2,4-oxadiazole, 5-(2-pyridyl)-
3-[5-(3-pyridyl)-pyrid-3-yl]-l,2,4-oxadiazole, 5-(2-pyridyl)-3-[3-(3-ρyridyl)- phenyl]- 1,2,4-oxadiazole, 5-(5-fluoro-ρyrid-2-yl)-3-[3-fluoro-5-(3-pyridyl)- phenyl]-l,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-carboxy-5-methoxyphenyl)- 1,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-(carboxamido)-5-methoxyphenyl)- 1 ,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2-N)N-dimethylaminoethoxy)phenyl)-
1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(N,N- dimethylaminopropoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2- aminoethoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2- hydroxyethoxy)phenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- isopropoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-ethoxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-(2,2,2-trifluoroethoxy)phenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5-cyclopropylmethoxyphenyl)-l,2,4- oxadiazole, 3-(2-pyridyl)-5-(3-amino-5-cyanophenyl)-l,2,4-oxadiazole, 3-(5- fluoropyrid-2-yl)-5-(3-amino-5-cyanophenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (3-cyano-5-(trifluoromethylsulfonyloxy)phenyl)- 1 ,2,4-oxadiazole, 3-(2-pyridyl)- 5-(3-cyano-5-(2-methoxy-2-oxoethoxy)phenyl)-l,2,4-oxadiazole, 3-(2-pyridyl)-5- (3-cyano-5-(2-tert-butoxy-2-oxoethoxy)phenyl)-l ,2,4-oxadiazole, 3-(2-pyridyl)-5-
(3-cyano-5-(methoxymethoxy)phenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3- cyano-5-(methoxyethoxy)phenyl)-l,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3- cyano-5-cyclopentylaminophenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- hexyloxyphenyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)-5-(3-cyano-5- (dimethylamino)carbonylphenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3- cyano-5-ethylaminophenyl)- 1,2,4-oxadiazole, 3-(5-fluoropyrid-2-yl)-5-(3-cyano- 5-diethylaminophenyl)-l,2,4-oxadiazole, 3-(5-fluoro-pyrid-2-yl)-5-[3-fluoro-5- (lH-tetraazol-5-yl)-phenyl]-l,2,4-oxadiazole, 5-[3-fluoro-5-(l-methyl-lH- tetraazol-5-yl)-phenyl]-3-(5-fluoro-pyrid-2-yl)-l,2,4-oxadiazole, 3-(5-fluoro-2- pyridyl)-5-(3-(l-benzyl-l,2,5,6-tetrahydropyridin-3-yl)-5-fluorophenyl)-l,2,4- oxadiazole, 3-(5-fluoro-2-pyridyl)-5-(3-fluoro-5-(lH-imidazol-4-yl)phenyl)-l,2,4- oxadiazole, l-(3-cyanophenyl)-4-(5-fluoro-2-pyridyl)-lΗ-imidazole, 3-(2- ρyridyl)-5-(3-(lH-imidazol-l-yl)-5-thiomethoxyphenyl)-l,2,4-oxadiazole, 3-(3- cyano-5-(lH-imidazol-l-yl)phenyl)-5-(2-pyridyl)- 1,2,4-oxadiazole, 3-(2-pyridyl)- 5-(3-cyano-5-(lH-imidazol-l-yl)phenyl)-l,2,4-oxadiazole, 2-(3-iodophenyl)-4-
(pyridin-2-yl)-l,3-thiazole, 3-(2-pyridyl)-2-(3-cyanophenyl)-furan, 3-(5-fluoro-2- ρyridyl)-2-(3-cyanophenyl)-furan, 3-(5-chloro-2-pyridyl)-2-(3-cyanophenyl)- furan, 2-(2-pyridyl)-5-(5-fluoro-3-(l-imidazolyl)phenyl)-furan, 3-(5-(2-pyridyl)~ 2-furyl)-benzonitrile, 3-(5-(5-chloro-2-pyridyl)-2-furyl)-benzonitrile, 3-(5-(5- cyano-2-pyridyl)-2-furyl)-benzonitrile, 3-(5-(5-fluoro-2-pyridyl)-2-furyl)- benzonitrile, 3-fluoro-5-(5-(2-pyridyl)-2-furyl)-benzonitrile, 2-(3-cyanophenyl)-4- (5-fluoropyrid-2-yl)- 1 ,3-oxazole, 2-(3-cyano-5-fluorophenyl)-4-(5-fluoropyrid-2- yl)-l,3-oxazole, 2-(3-cyano-5-fluorophenyl)-4-(2-pyridyl)- 1,3-oxazole, 2-(5- allyloxy-3-cyanophenyl)-4-(5-fluoropyrid-2-yl)-l,3-oxazole, 2-(3-cyano-5- methoxyphenyl)-4-(pyrid-2-yl)-l,3-oxazole, 2-(3-cyano-5-methoxyphenyl)-4-(5- fluoropyrid-2-yl)-l,3-oxazole, 2-(3-cyano-5-n-propyloxyphenyl)-4-(5- fluoropyrid-2-yl)-l ,3-oxazole, and 2-(3-cyano-5-methoxyphenyl)-4-(4-pyrid-2- yl)-5-chloro- 1,3-oxazole.
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