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WO2005058326A1 - USE OF QUINAZOLINONE DERIVATIVES FOR THE INHIBITION OF TRANSIENT LOWER ESOPHAGEAL SPHINCTER RELAXATIONS (TLESRs) - Google Patents

USE OF QUINAZOLINONE DERIVATIVES FOR THE INHIBITION OF TRANSIENT LOWER ESOPHAGEAL SPHINCTER RELAXATIONS (TLESRs) Download PDF

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Publication number
WO2005058326A1
WO2005058326A1 PCT/SE2004/001876 SE2004001876W WO2005058326A1 WO 2005058326 A1 WO2005058326 A1 WO 2005058326A1 SE 2004001876 W SE2004001876 W SE 2004001876W WO 2005058326 A1 WO2005058326 A1 WO 2005058326A1
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alkyl
alkylene
compound
formula
acceptable salt
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PCT/SE2004/001876
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French (fr)
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Anders Lehmann
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Astrazeneca Ab
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/495Heterocyclic 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
    • A61K31/505Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim
    • A61K31/517Pyrimidines; Hydrogenated pyrimidines, e.g. trimethoprim ortho- or peri-condensed with carbocyclic ring systems, e.g. quinazoline, perimidine
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/04Drugs 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00Drugs for disorders of the respiratory system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00Drugs for disorders of the respiratory system
    • A61P11/06Antiasthmatics

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, as well as for the treatment of regurgitation.
  • 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 in infants.
  • GENERAL gastro-esophageal reflux disease
  • the present invention is directed to the use of compounds of formula I
  • R 1 , R 2 , R 3 , R 4 and R 5 independently are hydrogen; halogen; C ⁇ -C alkyl; C 2 - C 4 alkenyl; C 3 -C cycloalkyl; C 3 -C cycloalkylC 1 -C alkyl; C 1 -C alkoxyC 1 -C alkyl; Cj- C 4 alkylcarboxy; hydroxyC 1 -C 4 alkoxyC 1 -C 4 alkyl; hydroxy; hydroxyC !
  • R 10 and R n independently are hydrogen, - alkyl; C 2 -C alkenyl; C 3 -C cycloalkyl; C 3 - C cycloalkylC ⁇ -C 4 alkyl; C 1 -C alkoxyC 1 -C 4 alkyl; C !
  • R 10 and R n form together an aliphatic heterocyclic group having 5 to 10 ring atoms of which one, two or three are hetero atoms selected from nitrogen, oxygen and sulfur;
  • R 12 and R 13 independently are hydrogen, C]-C 4 alkyl, C -C alkenyl, C 3 -C cycloalkyl, C 3 - C cy cloalky 1C i -C 4 alkyl, C i -C 4 alkoxyC i -C alkyl, hydroxy C ⁇ -C 4 alkoxy -C 4 alky 1, hydroxy - alkyl, dihydroxyC]-C 4 alkyl, C ⁇ -C 4 alkoxycarbonylC ⁇ -C 4 alkyl, Ci-
  • R 1 is -SO 2 NHCH 3 ;
  • R 4 is hydrogen, chloro
  • R 5 is hydrogen or chloro
  • R 5 is methyl, hydroxymethyl, -CH 2 -O-C(O)-N(R 12 )R 13 and -CH 2 -X-C(O)-R 14 ;
  • R 7 and R 8 are methyl;
  • R 9 is ethyl or propyl
  • R 10 is 1-pyrrolidinyl, -CH 2 COOH, methyl or hydrogen;
  • R 11 is methyl or hydrogen
  • R 12 is methyl, ethyl, propyl, 2-hydroxyethyl, 3-hydroxypropyl, 2,3-dihydroxypropyl, 1- (hydroxymethyl)-2-hydroxyethyl, cyano, -CH 2 CH 2 -SO 2 CH 3 , -CH 2 CH 2 -S-CH 3 , -CH 2 CH 2 -
  • R 13 is hydrogen or forms with R 12 a -CH 2 -CH 2 -CHOH-CH 2 -CH 2 - ring;
  • R 14 is -NH-CH 3 , -NH-CH 2 CH 3 , -NH-CH 2 CH 2 CH 3 , 2-hydroxyethyl-NH-, 3- hydroxypropyl-NH-, 2,3-dihydroxypropyl-NH-, l-(hydroxymethyl)-2-hydroxyethyl-NH-, -
  • the compounds of formula I above can be prepared as described in WO03/066603 Al. Consequently, the present invention is directed to the use of a compound of formula I 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 of formula I 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 for the manufacture of a.medicament for the treatment of gastro-esophageal reflux disease (GERD).
  • GFD gastro-esophageal reflux disease
  • a further aspect of the invention is the use of a compound of formula I 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 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 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 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 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 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 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 is administered to a subject in need of such treatment.
  • GFD 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 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 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 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 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 is administered to a subject in need of such treatment.
  • TLESR transient lower esophageal sphincter relaxations
  • GFD gastro-esophageal reflux disease
  • the compounds of formula I 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 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 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.
  • 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.
  • 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 may be administered once or twice daily, depending on the severity of the patient's condition.
  • a typical daily dose of the compound of formula I is from 0.1 - 100 mg per kg body weight of the subject to be treated, but this will depend on various factors such as the route of administration, the age and weight of the patient as well as of 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/kg.
  • air is insufflated at a rate of 500 ml/min until a intragastric pressure of 10+1 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 m Hg, and the duration of the complete relaxation longer than 1 s.
  • N number of dogs tested.

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Abstract

The present invention relates to the use of a compound of formula (I) for the inhibition of transient lower esophageal sphincter relaxations. A further aspect of the invention is directed to the use of a compound of formula I for the treatment of gastro-esophageal reflux disease, as well as for the treatment of regurgitation.

Description

Use of quinazolinone derivatives for the inhibition of transient lower esophageal sphincter' relaxations (TLESRs)
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, as well as for the treatment of regurgitation.
Background of the invention
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 in infants. Outline of the invention
The present invention is directed to the use of compounds of formula I
Figure imgf000003_0001
wherein R1, R2, R3, R4 and R5 independently are hydrogen; halogen; Cι-C alkyl; C2- C4alkenyl; C3-C cycloalkyl; C3-C cycloalkylC1-C alkyl; C1-C alkoxyC1-C alkyl; Cj- C4alkylcarboxy; hydroxyC1-C4alkoxyC1-C4alkyl; hydroxy; hydroxyC!-C4alkyl; phenylCi- C4alkyl which is optionally substituted by hydroxy, Cj-C4alkoxy, carboxy, C\- C alkoxycarbonylCj-C4alkyl, CrC4alkoxycarbonyl, cyano; -SO2R10; cyano; - SO2N(R10)Rπ; -S-R10 or -SOR10; or R1 and R2 or R2 and R3 denote, together with the carbon atoms to which they are attached, an aromatic or aliphatic carbocyclic group having 5 to 10 ring atoms or an aromatic or aliphatic heterocyclic group having 5 to 10 ring atoms of which one, two or three are hetero atoms selected from nitrogen, oxygen and sulfur; R6 is -CH2-O-C(O)-N(R12) R13, -CH2-X-C(O)-R14, CrC4alkyl or hydroxyC1-C4alkyl; R7, R8 and R9 independently are Cι-C4alkyl;
R10 and Rn independently are hydrogen, - alkyl; C2-C alkenyl; C3-C cycloalkyl; C3- C cycloalkylCι-C4alkyl; C1-C alkoxyC1-C4alkyl; C!-C4alkylcarboxy; hydroxyCi- C4alkoxyC!-C alkyl; hydroxy; hydroxy - alkyl; phenylCι-C alkyl which is optionally substituted by hydroxy, Cι-C4alkoxy, carboxy, C1-C4alkoxycarbonylC1-C4alkyl, C\- C4alkoxycarbonyl, cyano; or R10 and Rn form together an aliphatic heterocyclic group having 5 to 10 ring atoms of which one, two or three are hetero atoms selected from nitrogen, oxygen and sulfur;
R12 and R13 independently are hydrogen, C]-C4alkyl, C -C alkenyl, C3-C cycloalkyl, C3- C cy cloalky 1C i -C4alkyl, C i -C4alkoxyC i -C alkyl, hydroxy C ι -C4alkoxy -C4alky 1, hydroxy - alkyl, dihydroxyC]-C4alkyl, Cι-C4alkoxycarbonylCι-C4alkyl, Ci-
C4alkoxycarbonyl, cyano, -SO2R10, -SO2N(R10)Rn, -S-R10, -SOR10, -C C4-alkylene- SO2R10, -C1-C4-alkylene-SOR10, C C4-alkylene-NH-SO2R10, -d-C4-alkylene- CON(R10)Rn, -CON(R10)Rn, -Cι-C4-alkylene-C(O)OR10, fluoroalkyl, or R12 and R13 form a substituted or unsubstituted aliphatic heterocyclic group having 5 to 10 ring atoms; R14 is H, d-C4alkyl-NH-, C2-C4alkenyl- H-, C3-C7cycloalkyl-NH-, C3-C7cycloalkyld- C4alkyl-NH-, C C4alkoxyCι-C4alkyl-NH-, hydroxyC1-C4alkoxyC1-C4alkyl-NH-, hydroxy C ι -C4alkyl-NH-, dihydroxy d -C alkyl-NH-, Ci -C alkoxycarbony 1-C ] -C4alkyl- NH-, C1-C4alkoxycarbonyl-NH-, -NH-d-C4-alkylene-CN, - H-SO2R10, -NH- SO2N(R10)Rπ, -NH-d-Q-alkylene-S-R10, -NH-SOR10, -NH-d-C4-alkylene-SO2R10, - NH-C1-C4-alkylene-SOR10, -NH-Cι-C4-alkylene-NH-SO2R10, - H-C1-C4-alkylene- CON(R10)R1 ', -NH-CON(R10)R1 ', - H-C1-C4-alkylene-C(O)OR10, -NH-fluoroalkyl, or a substituted or unsubstituted aliphatic heterocyclic group having 5 to 10 ring atoms; X is O or CH2; with the proviso that when R1 is either halogen, methyl, ethyl, methoxy, trifluoromethyl or hydrogen and R2, R3, R4 are either hydrogen, methyl or methoxy and R5 is hydrogen or methyl, R12 is neither hydrogen, C2-C4alkyl, C2-C4alkenyl, hydroxyd- Qalkyl, -d-C4-alkylene-SO2R10, nor -Cι-C4-alkylene-SOR10; 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).
Compounds of the invention exist in free or salt, e.g. acid addition salt form. The invention is to be understood as including the compounds of formula I in free as well as in acid addition salt form, e.g. as trifiuoroacetate or hydrochloride salt. Suitable pharmaceutically acceptable acid addition salts for pharmaceutical use in accordance with the invention include in particular the hydrochloride salt.
In formula I the following residues are examples, independently, collectively or in any combination or sub-combination:
(a) R1 is hydrogen, chloro, methyl, methoxy, -CH2C(O)OCH3, -CH2CH2C(O)OCH3, - C(O)N(CH3)2, -C(O)OCH3, cyano, -SO2-l-pyrrolidinyl, -SO2CH3, -SO2NHCH3, - SO2N(CH3)2, -SO2N(CH3)CH2COOH, -S-CH3, -SOCH3 or R1 forms with R2 a -NH-CH2- CH2-CH2- or -CH=CH CH=CH- ring. In one embodiment, R1 is -SO2NHCH3; (b) R2 is hydrogen, chloro, methyl, tri-fluoromethyl, or forms with R1 a -NH-CH2-CH2- CH2-, CH=CH-CH=CH- ring or with R3 a -CH=CH-CH=CH- ring. (c) R3 is hydrogen, fluoro, methyl, or forms with R2 a -CH=CH-CH=CH- ring. In particular embodiments R3 is hydrogen or chloro;
(d) R4 is hydrogen, chloro;
(e) R5 is hydrogen or chloro;
(f) R5 is methyl, hydroxymethyl, -CH2-O-C(O)-N(R12)R13 and -CH2-X-C(O)-R14; (g) R7 and R8 are methyl;
(h) R9 is ethyl or propyl;
(i) R10 is 1-pyrrolidinyl, -CH2COOH, methyl or hydrogen;
(k) R11 is methyl or hydrogen;
(1) R12 is methyl, ethyl, propyl, 2-hydroxyethyl, 3-hydroxypropyl, 2,3-dihydroxypropyl, 1- (hydroxymethyl)-2-hydroxyethyl, cyano, -CH2CH2-SO2CH3, -CH2CH2-S-CH3, -CH2CH2-
NH-SO2CH3, -CH2C(O)OCH3, -CH2CONH2, 2,2,2-trifluoro-ethyl, or forms with R13 a -
CH2-CH2-CHOH-CH2-CH2- ring;
(m) R13 is hydrogen or forms with R12 a -CH2-CH2-CHOH-CH2-CH2- ring;
(n) R14 is -NH-CH3, -NH-CH2CH3, -NH-CH2CH2CH3, 2-hydroxyethyl-NH-, 3- hydroxypropyl-NH-, 2,3-dihydroxypropyl-NH-, l-(hydroxymethyl)-2-hydroxyethyl-NH-, -
NH-CH2CN, -NH-CH2CH2-SO2CH3, -NH-CH2CH2-S-CH3, -NH-CH2CH2-NH-SO2CH3, -
NH-CH2C(O)OCH3, -NH-CH2CONH2, 2,2,2-NH-trifluoro-ethyl,
Figure imgf000005_0001
(o) X is O.
The compounds of formula I above can be prepared as described in WO03/066603 Al. Consequently, the present invention is directed to the use of a compound of formula I 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 of formula I 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 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 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 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 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 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 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 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 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 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 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 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 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 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 is administered to a subject in need of such treatment.
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., SmoutA.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 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 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 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 may be administered once or twice daily, depending on the severity of the patient's condition.
A typical daily dose of the compound of formula I is from 0.1 - 100 mg per kg body weight of the subject to be treated, but this will depend on various factors such as the route of administration, the age and weight of the patient as well as of 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.
Motility 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 III 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/kg. Immediately following the meal, air is insufflated at a rate of 500 ml/min until a intragastric pressure of 10+1 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 m Hg, and the duration of the complete relaxation longer than 1 s.
Inhibition of the number of TLESRs was calculated with regard to the five preceding control experiments for each dog, and the results as set out in Table 1 below were achieved.
The results shown below in Table 1 indicate that cannabinoid receptor 1 agonists are useful for the inhibition of TLESR, and thus for the treatment of GERD.
EXAMPLE 1
Figure imgf000012_0001
Ethyl 2-[( { [(2-hydroxyethy l)amino] carbony 1 } oxy)methyl]-5 ,7-dimethyl-3 - { 2- [(methylamino)sulfonyl]phenyl}-4-oxo-3,4-dihydroquinazoline-6-carboxylate [CA Index Name: 6-quinazolinecarboxylic acid, 3,4-dihydro-2-[[[[(2- hydroxyethyl)amino]carbonyl]oxy]methyl]-5,7-dimethyl-3-[2-
[(methylamino)sulfonyl]phenyl]-4-oxo-ethyl ester and CAS registry number: 581106-09-4 or also called 2-(2-hydroxy-ethylcarbamoyloxymethyl)-5,7-dimethyl-3-(2- methylsulfamoyl-phenyl)-4-oxo-3,4-dihydro-quinazoline-6-carboxylic acid ethyl ester] was prepared according to the procedure described in WO 03/066603 (Example 2). The above quinazoline, herein referred to as: 581106-09-4, was tested on adult Labrador retrievers of both genders in accordance with the model described above.
Table 1 - Barostat model
Figure imgf000012_0002
N= number of dogs tested.

Claims

Claims
1.
Figure imgf000013_0001
wherein R1, R2, R3, R4 and R5 independently are hydrogen; halogen; d-C4alkyl; C2-C4alkenyl; C3-C7cycloalkyl; C3-C7cycloalkylC1-C alkyl; Cι-C4alkoxyd- C4alkyl; Cj-C4alkylcarboxy; hydroxyd-C4alkoxyC1-C alkyl; hydroxy; hydroxyCrC alkyl; phenylCι-C alkyl which is optionally substituted by hydroxy, d-C4alkoxy, carboxy, d-C alkoxycarbonylC]-C4alkyl, Cι-C4alkoxycarbonyl, cyano; -SO2R10; cyano; -SO2N(R10)Rn; -S-R10 or -SOR10; or R1 and R2 or R2 and R3 denote, together with the carbon atoms to which they are attached, an aromatic or aliphatic carbocyclic group having 5 to 10 ring atoms or an aromatic or aliphatic heterocyclic group having 5 to 10 ring atoms of which one, two or three are hetero atoms selected from nitrogen, oxygen and sulfur; R6 is -CH2-O-C(O)-N(R12) R13, -CH2-X-C(O)-R14, d-C4alkyl or hydroxyd- dalkyl; R , R and R independently are Cj-C4alkyl; R10 and R11 independently are hydrogen, C1-C4alkyl; C2-C4alkenyl; C3- C cycloalkyl; C3-C7cycloalkylC]-C4alkyl; Cι-C4alkoxyC1-C4alkyl; d- C alkylcarboxy; hydroxyC]-C4alkoxyd-C4alkyl; hydroxy; hydroxyCι-C4alkyl; phenylCι-C4alkyl which is optionally substituted by hydroxy, C]-C4alkoxy, carboxy, d-C4alkoxycarbonyld-C4alkyl, Cι-C4alkoxycarbonyl, cyano; or R10 and R11 form together an aliphatic heterocyclic group having 5 to 10 ring atoms of which one, two or three are hetero atoms selected from nitrogen, oxygen and sulfur; R12 and R13 independently are hydrogen, d-C alkyl, C2-C alkenyl, C3- C7cycloalkyl, C3-C7cycloalkylCrC alkyl, Cι-C4alkoxyC1-C alkyl, hydroxyd- C4alkoxyC1-C alkyl, hydroxyCι-C4alkyl, dihydroxyC!-C4alkyl, d- C4alkoxycarbonylC1-C4alkyl, d- C alkoxycarbonyl, cyano, -SO2R10, - SO2N(R10)Rn, -S-R10, -SOR10, -Cι-C4-alkylene-SO2R10, -d-C4-alkylene-SOR10, Cι-C4-alkylene-NH-SO2R10, -Cι-C4-alkylene-CON(R10)Rn, -CON(R10)Rπ, -Ci- C4-alkylene-C(O)OR10, fluoroalkyl, or R12 and R13 form a substituted or unsubstituted aliphatic heterocyclic group having 5 to 10 ring atoms; R14 is NH, d-C4alkyl-NH-, C2-C4alkenyl-NH-, C3-C7cycloalkyl-NH-, C3- C7cycloalkylCι-C4alkyl-NH-, Cι-C4alkoxyd-C4alkyl-NH-, hydroxyd- C4alkoxyd-C4alkyl-NH-, hydroxyd-C4alkyl-NH-, dihydroxyd-C4alkyl-NH-, Cι-C4alkoxycarbonyl-C1-C4alkyl-NH-, C1-C4alkoxycarbonyl-NH-, -NH-d-C4- alkylene-CN, -NH-SO2R10, -NH-SO2N(R10)Rπ, -NH-d-C4-alkylene-S-R10, -NH- SOR10, -NH-d-C4-alkylene-SO2R10, -NH-d-Q-alkylene-SOR10, -NH-CrC4- alkylene-NH-SO2R10, -NH-Cι-C4-alkylene-CON(R10)R1 !, -NH-CON(R10)R1 - NH-d-C -alkylene-C(O)OR10, -NH-fluoroalkyl, or a substituted or unsubstituted aliphatic heterocyclic group having 5 to 10 ring atoms; X is O or CH2; with the proviso that when R1 is either halogen, methyl, ethyl, methoxy, trifluoromethyl or hydrogen and R2, R3, R4 are either hydrogen, methyl or methoxy and R5 is hydrogen or methyl, R12 is neither hydrogen, C2-C4alkyl, C2- C4alkenyl, hydroxyCι-C4alkyl, -d-C4-alkylene-SO2R10, nor -Cι-C4-alkylene- SOR10; 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 I as defined in claim 1, wherein said compound is selected from 2-ethylcarbamoyloxymethyl-5,7-dimethyl-3-(2-methylsulfamoyl- phenyl)-4-oxo-3,4-dihydro-quinazoline-6-carboxylic acid ethyl ester and 2-(2- hydroxy-ethylcarbamoyloxymethyl)-5,7-dimethyl-3-(2-methylsulfamoyl-phenyl)- 4-oxo-3,4-dihydro-quinazoline-6-carboxylic acid ethyl ester; 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).
3. Use of a compound of formula I 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).
4. Use of a compound of formula I 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.
5. Use of a compound of formula I 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.
6. Use of a compound of formula I 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.
7. Use according to claim 6, wherein the asthma is reflux-related asthma.
8. Use of a compound of formula I 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, chronic laryngitis.
9. Use of a compound of formula I 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.
10. Use of a compound of formula I 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.
11. Use according to any one of the preceding claims, wherein the daily dose of the compound of formula I is from 0.1 - 100 mg per kg body weight of the subject to be treated.
12. 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
Figure imgf000016_0001
wherein R1, R2, R3, R4 and R5 independently are hydrogen; halogen; d- alkyl; C2-C4alkenyl; C3-C7cycloalkyl; C3-C7cycloalkylCι-C4alkyl; C]-C4alkoxyd- C alkyl; Cι-C4alkylcarboxy; hydroxyC1-C alkoxyC1-C4alkyl; hydroxy; hydroxyd-C4alkyl; phenyld-C alkyl which is optionally substituted by hydroxy, d-C4alkoxy, carboxy, Cι-C4alkoxycarbonyld-C4alkyl, C1-C4alkoxycarbonyl, cyano; -SO2R10; cyano; -SO2N(R10)Rn; -S-R10 or -SOR10; or R1 and R2 or R2 and R3 denote, together with the carbon atoms to which they are attached, an aromatic or aliphatic carbocyclic group having 5 to 10 ring atoms or an aromatic or aliphatic heterocyclic group having 5 to 10 ring atoms of which one, two or three are hetero atoms selected from nitrogen, oxygen and sulfur; R6 is -CH2-O-C(O)-N(R12) R13, -CH2-X-C(O)-R14, CrC4alkyl or hydroxyd- C4alkyl; R7, R8 and R9 independently are Cι-C4alkyl; R10 and R11 independently are hydrogen, d-C4alkyl; C2-C alkenyl; C3- Cγcycloalkyl; d-dcycloalkyld-dalkyl; C!-C alkoxyCι-C4alkyl; d- C alkylcarboxy; hydroxyC]-C4alkoxyCι-C4alkyl; hydroxy; hydroxyCι-C4alkyl; phenylCj-C alkyl which is optionally substituted by hydroxy, Cι-C4alkoxy, carboxy, Cι-C alkoxycarbonylC1-C4alkyl, C!-C alkoxycarbonyl, cyano; or R10 and R11 form together an aliphatic heterocyclic group having 5 to 10 ring atoms of which one, two or three are hetero atoms selected from nitrogen, oxygen and sulfur;
R12 and R13 independently are hydrogen, C1-C4alkyl, C2-C4alkenyl, C3- C7cycloalkyl, C3-C7cycloalkyld-C4alkyl, C1-C alkoxyC1-C4alkyl, hydroxyCi-
C4alkoxyCι-C alkyl, hydroxyCι-C alkyl, dihydroxyC1-C4alkyl, d- C4alkoxycarbonylC1-C4alkyl, d- C4alkoxycarbonyl, cyano, -SO2R10, - SO2N(R10)Rn, -S-R10, -SOR10, -Cι-C4-alkylene-SO2R10, -d-C4-alkylene-SOR10, Cι-C4-alkylene-NH-SO2R10, -Cι-C4-alkylene-CON(R10)Rn, -CON(R10)Rn, -C C4-alkylene-C(O)OR10, fluoroalkyl, or R12 and R13 form a substituted or unsubstituted aliphatic heterocyclic group having 5 to 10 ring atoms; R14 is NH, Cι-C4alkyl-NH-, C2-C4alkenyl-NH-, C3-C7cycloalkyl-NH-, C3- C7cycloalkyld-C4alkyl-NH-, Cι-C4alkoxyCι-C4alkyl-NH-, hydroxyCi- C4alkoxyCι-C alkyl-NH-, hydroxyd-C4alkyl-NH-, dihydroxyC1-C4alkyl-NH-, d-C4alkoxycarbonyl-Cι-C4alkyl-NH-, d-C4alkoxycarbonyl-NH-, -NH-Cj-C4- alkylene-CN, -NH-SO2R10, -NH-SO2N(R10)Rπ, -NH-d-C4-alkylene-S-R10, -NH- SOR10, -NH-d-C4-alkylene-SO2R10, -NH-d-C4-alkylene-SOR10, -NH-d-C4- alkylene-NH-SO2R10, -NH-d-C4-alkylene-CON(R10)Rn, -NH-CON(R10)Rn, - NH-C]-C4-alkylene-C(O)OR10, -NH-fluoroalkyl, or a substituted or unsubstituted aliphatic heterocyclic group having 5 to 10 ring atoms;
X is O or CH2; with the proviso that when R1 is either halogen, methyl, ethyl, methoxy, trifluoromethyl or hydrogen and R2, R3, R4 are either hydrogen, methyl or methoxy and R5 is hydrogen or methyl, R12 is neither hydrogen, C2-C4alkyl, C2- C4alkenyl, hydroxyd-Qalkyl, -Cι-C4-alkylene-SO2R10, nor -d-C4-alkylene- SOR10; or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such inhibition.
13. A method according to claim 12, wherein the compound of formula I is selected from 2-ethylcarbamoyloxymethyl-5,7-dimethyl-3-(2-methylsulfamoyl-phenyl)-4- oxo-3,4-dihydro-quinazoline-6-carboxylic acid ethyl ester and 2-(2-hydroxy- ethylcarbamoyloxymethyl)-5,7-dimethyl-3-(2-methylsulfamoyl-phenyl)-4-oxo- 3,4-dihydro-quinazoline-6-carboxylic acid ethyl ester; or a pharmaceutically acceptable salt or an optical isomer thereof.
14. A method for the treatment of gastro-esophageal reflux disease (GERD), whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I as defined in claim 12, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment.
15. A method for the prevention of reflux, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I as defined in claim 12, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such prevention.
16. A method for the treatment of, or prevention of, regurgitation, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I as defined in claim 12, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment or prevention.
17. A method for the prevention of, or treatment of, lung disease, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I as defined in claim 12, 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 managing failure to thrive, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I as defined in claim 12, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such management.
19. A method for treatment or prevention of asthma, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I as defined in claim 12, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment or prevention.
20. A method according to claim 19, wherein the asthma is reflux-related asthma.
21. A method for treatment or prevention of chronic laryngitis, whereby a pharmaceutically and pharmacologically effective amount of a compound of formula I as defined in claim 12, or a pharmaceutically acceptable salt or an optical isomer thereof, is administered to a subject in need of such treatment or prevention.
22. A method according to any one of claims 12-21, wherein the daily dose of the compound of formula I is from 0.1 - 100 mg per kg body weight of the subject to be treated.
PCT/SE2004/001876 2003-12-19 2004-12-15 USE OF QUINAZOLINONE DERIVATIVES FOR THE INHIBITION OF TRANSIENT LOWER ESOPHAGEAL SPHINCTER RELAXATIONS (TLESRs) WO2005058326A1 (en)

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US8552015B2 (en) 2002-02-06 2013-10-08 Novartis Ag Quinazolinone derivatives and their use as CB agonists
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