Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D237/00—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings
  • C07D237/26—Heterocyclic compounds containing 1,2-diazine or hydrogenated 1,2-diazine rings condensed with carbocyclic rings or ring systems
• • 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
• • 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
  • A61K31/50—Pyridazines; Hydrogenated pyridazines
  • A61K31/502—Pyridazines; Hydrogenated pyridazines ortho- or peri-condensed with carbocyclic ring systems, e.g. cinnoline, phthalazine
• • 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
• • 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
  • A61P11/02—Nasal agents, e.g. decongestants
• • 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
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P13/00—Drugs for disorders of the urinary system
  • A61P13/12—Drugs for disorders of the urinary system of the kidneys
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P17/00—Drugs for dermatological disorders
  • A61P17/06—Antipsoriatics
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P19/00—Drugs for skeletal disorders
  • A61P19/02—Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P25/00—Drugs for disorders of the nervous system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P27/00—Drugs for disorders of the senses
  • A61P27/02—Ophthalmic agents
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P27/00—Drugs for disorders of the senses
  • A61P27/02—Ophthalmic agents
  • A61P27/14—Decongestants or antiallergics
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P3/00—Drugs for disorders of the metabolism
  • A61P3/08—Drugs for disorders of the metabolism for glucose homeostasis
  • A61P3/10—Drugs for disorders of the metabolism for glucose homeostasis for hyperglycaemia, e.g. antidiabetics
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P37/00—Drugs for immunological or allergic disorders
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P37/00—Drugs for immunological or allergic disorders
  • A61P37/02—Immunomodulators
  • A61P37/06—Immunosuppressants, e.g. drugs for graft rejection
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
  • A61P9/14—Vasoprotectives; Antihaemorrhoidals; Drugs for varicose therapy; Capillary stabilisers

Definitions

• maduraphthalazine derivatives as inhibitors of pro-inflammatory cytokines
• the invention relates to the use of known and novel derivatives of maduranic acid as inhibitors of pro-inflammatory cytokines for the production of medicaments for the treatment of diseases mediated by these cytokines.
• the immune system is a complex network of interactions between different cells and their mediators.
• the mediators are intercellular signaling molecules that regulate, for example, the growth, differentiation and function of the cells involved.
• An important group of mediators are the cytokines, which include the colony-stimulating factors and the interleukins. Cytokines are polypeptides, the diverse molecular characteristics, mechanisms of action, physiological functions and their role in numerous diseases are currently being intensively researched. It is known, for example, that a number of cytokines are responsible for controlling the immune defense reactions against pathogens.
• B-lymphocytes and T-lymphocytes are of crucial importance for the identification of foreign particles or substances and for the initiation of the cascade of defense reactions.
• IL-2 interleukin-2
• IL-4 interleukin -4
• Both cytokines also act on the increased provision of interleukin-5 (IL-5).
• IL-2 can stimulate the synthesis of IL-5 in T lymphocytes.
• IL-4 controls T cell differentiation to increase the formation of Th2 cells, which preferentially produce IL-4 and IL-5.
• Th2 cells which preferentially produce IL-4 and IL-5.
• the action of these 3 cytokines finally triggers the pathogen-fighting reactions, which can present themselves as inflammation.
• Substances capable of inhibiting the action of interleukin-2, interleukin-4 and interleukin-5 should therefore be of great therapeutic benefit for the treatment of diseases mediated by these cytokines.
• glucocorticosteroids such as beclomethasone or budesonide
• side effects such as increased intraocular pressure, increased susceptibility to infection, Impairment of the hormonal loop (osteoporosis, growth retardation in children) can limit the use of glucocorticosteroids.
• CsA cyclosporin A
• the aim of this invention is to provide highly effective inhibitors of the cytokines interleukin-2, interleukin-4 and interleukin-5 for the manufacture of medicaments for the treatment of diseases mediated by these cytokines.
• Maduranic acid or madura hydroxylactone is a natural product obtained by fermentation from Actinomadura rubra (DD 285 614; WFFleck, DGStrauss, J.Meyer, Z.AIIg.Mikrobiol. 18 (1978) 368-398).
• the structure of this compound (Formula 1) was elucidated by Paul and co-workers (EF Paulus, Dornberger, W. Werner, D. Fenske, Acta Cryst. C50 (1994) 2064-2067):
• R 3 -COOCH 3 described, and their antimicrobial potential examined.
• R 1 is hydrogen
• -Ci 12 -alkyl straight-chain or branched-chain, optionally mono- or polysubstituted with -OH, -SH, -NH 2 , -NHCi 6 -alkyl, -N (-C ⁇ 6 -alkyl) 2 , -NHC 6 14 aryl, -N (C 6 14 aryl) 2 , -N (d 6 alkyl) (C 6 ⁇ 4 aryl), -NHCOR 7 , -NO 2 , -CN, -F, -Cl, -Br, -I, -O -Ci 6 alkyl, -OC 6 14 aryl, -O (CO) R 7 , -S-C ⁇ 6-alkyl, -SC 6 uAryl, -SOR 8 , -SO 2 R 8 , -OSO 2 C ⁇ 6 alkyl , -OSO 2 C 6 ⁇ 4 aryl,
• heterocyclic systems contain 1-6 heteroatoms, which are preferably N, O and S, optionally mono- or polysubstituted with -OH , -SH, -NH 2 , -NHd e-alkyl, -N (d 6 -alkyl) 2 , -NHC 6 ⁇ 4 aryl, -N (C 6 ⁇ 4 aryl) 2 , -N (d 6 alkyl) ( C 6 ⁇ 4 aryl),
• R 2 , R 3 , R 4 , R 5 , R 6 can be the same or different and for hydrogen, as well as -Ci .
• R 7 means
• -d e-alkyl -Od e-alkyl, -OC 6 14 -aryl, -NH 2 , -NHCi e-alkyl, -N (d 6 -alkyl) 2 , -NHC 6 14-aryl, -N (C 6 t 4 aryl) 2 , -N (d 6 alkyl) (C 6 ⁇ 4 aryl), -Sd e-alkyl, -SC 6 14-aryl, or mono-, bi- or tricyclic saturated or one or more times unsaturated carbocycles with 3 ... 14 ring members, or or mono-, bi- or tricyclic saturated or mono- or polyunsaturated heterocycles with 5 ... 15 ring members and 1 .. 6 heteroatoms, which are preferably N, O and S;
• R 8 stands for
• -H, -Ci e-alkyl or mono-, bi- or tricyclic saturated or mono- or polyunsaturated carbocycles with 3 ... 14 ring members, or mono-, bi- or tricyclic saturated or mono- or polyunsaturated heterocycles with 5 ... 15 ring members and 1 ... 6 heteroatoms, which are preferably N, O and S;
• a + B -CH CH- can be.
• R 6 -CH 3 , A, B -CH 2 -, and
• the invention further relates to the pharmacologically acceptable salts of the compounds of the formula 4.
• the pharmacologically acceptable salts are obtained in the usual way by neutralizing the bases with inorganic or organic acids or by neutralizing the acids with inorganic or organic bases.
• inorganic acids are hydrochloric acid, sulfuric acid, phosphoric acid or hydrobromic acid
• organic acids are, for example, carboxylic, sulfonic or sulfonic acid such as acetic acid, tartaric acid, lactic acid, propionic acid, glycolic acid, malonic acid, maleic acid, fumaric acid, tannic acid, succinic acid, alginic acid, benzoic acid , 2-phenoxybenzoic acid, 2-acetoxybenzoic acid, cinnamic acid, mandelic acid, citric acid, malic acid, salicylic acid, 3-aminosalicylic acid, ascorbic acid, embonic acid, nicotinic acid, isonicotinic acid, oxalic acid, amino acids, methanesulfonic acid, ethanesul
• inorganic bases are sodium hydroxide solution, potassium hydroxide solution, ammonia and, as organic bases, amines, but preferably tertiary amines, such as trimethylamine, triethylamine, pyridine, N, N-dimethylaniline, quinoline, isoquinoline, ⁇ -picoline, ⁇ -picoline, ⁇ -picoline , Quinaldine or pyrimidine in question.
• pharmacologically acceptable salts of the compounds of the formula 4 can be obtained by converting derivatives which have tertiary amino groups in a manner known per se using quaternizing agents into the corresponding quaternary ammonium salts.
• Suitable quaternizing agents are, for example, alkyl halides such as methyl iodide, ethyl bromide and n-propyl chloride, but also aryl alkyl halides such as benzyl chloride or 2-phenylethyl bromide.
• the invention further relates to the compounds of the formula 4 which contain an asymmetric carbon atom, the D form, the L form and D, L mixtures and, in the case of several asymmetric carbon atoms, the diastereomeric forms.
• Those compounds of formula 4 which contain asymmetric carbon atoms and which are generally obtained as racemates can be separated into the optically active isomers in a manner known per se, for example using an optically active acid.
• the invention relates to the use of the compounds according to the invention or their pharmacologically acceptable salts as inhibitors of the cytokines IL-2, IL-4 and IL-5 for the manufacture of medicaments for the treatment of diseases mediated by these cytokines.
• These diseases include for example bronchial asthma, allergic rhinitis, allergic conjunctivitis, atopic dermatitis, eczema, allergic angiitis, mediated eosinophil inflammation such as eosinophilic fasciitis, eosinophilic pneumonia and PIE syndrome, autoimmune diseases such as rheumatoid arthritis, rheumatoid spondylitis, lupus erythematosus, multiple sclerosis , Psoriasis, glomerulonephritis and uveitis, insulin-dependent diabetes mellitus and sepsis.
• the compounds according to the invention or their pharmacologically tolerated salts are also used for the production of medicaments for preventing rejection reactions after transplants of cells, tissues or organs.
• an effective dose of the compounds according to the invention or their salts is used to prepare the medicaments.
• the dosage of the active ingredients can vary depending on the route of administration, age, weight of the patient, type and severity of the diseases to be treated and similar factors.
• the daily dose can be given as a single dose to be administered once or divided into 2 or more daily doses and is usually 0.001-100 mg.
• parenteral, intravenous, transdermal, topical, inhalative and intranasal preparations can be used as the application form.
• galenical preparation forms such as tablets, dragees, capsules, dispersible powders, granules, aqueous solutions, aqueous or oily suspensions, syrups, juices or drops are used.
• Solid dosage forms can contain inert ingredients and carriers, such as. As calcium carbonate, calcium phosphate, sodium phosphate, lactose, starch, mannitol, alginates, gelatin, guar gum, magnesium or aluminum stearate, methyl cellulose, talc, highly disperse silicas, silicone oil, higher molecular fatty acids (such as stearic acid), gelatin, agar or vegetable or animal fats and oils, solid high molecular weight polymers (such as polyethylene glycol); Preparations suitable for oral administration can optionally contain additional flavorings and / or sweeteners.
• inert ingredients and carriers such as.
• Liquid pharmaceutical forms can be sterilized and / or optionally contain auxiliaries such as preservatives, stabilizers, wetting agents, penetrants, emulsifiers, spreading agents, solubilizers, salts, sugars or sugar alcohols for regulating the osmotic pressure or for buffering and / or viscosity regulators.
• auxiliaries such as preservatives, stabilizers, wetting agents, penetrants, emulsifiers, spreading agents, solubilizers, salts, sugars or sugar alcohols for regulating the osmotic pressure or for buffering and / or viscosity regulators.
• Such additives are, for example, tartrate and citrate buffers, ethanol, complexing agents (such as ethylenediamine-tetraacetic acid and their non-toxic salts).
• complexing agents such as ethylenediamine-tetraacetic acid and their non-toxic salts.
• high molecular weight polymers can be used, such as liquid polyethylene oxide, microcrystalline celluloses, carboxymethyl celluloses, polyvinylpyrrolidones, dextrans or gelatin.
• Solid carriers are, for example, starch, lactose, mannitol, methyl cellulose, talc, highly disperse silicas, higher molecular fatty acids (such as stearic acid), gelatin, agar-agar, calcium phosphate, magnesium stearate, animal and vegetable fats, solid high-molecular polymers such as polyethylene glycol.
• Oily suspensions for parenteral or topical applications can be vegetable synthetic or semisynthetic oils such as liquid fatty acid esters with 8 to 22 carbon atoms in the fatty acid chains, for example palmitin, laurin, tridecyl, margarine, stearin, arachine, myristine -, Behen-, Pentadecyl-, Linol-, Elaidin-, Brasidin-, Eruca or oleic acid, which with monohydric to trihydric alcohols with 1 to 6 carbon atoms such as methanol, ethanol, propanol, butanol, pentanol or their isomers, Glycol or glycerol are esterified.
• vegetable synthetic or semisynthetic oils such as liquid fatty acid esters with 8 to 22 carbon atoms in the fatty acid chains, for example palmitin, laurin, tridecyl, margarine, stearin, arachine, myristine -
• silicone oils of various viscosities or fatty alcohols such as isotridexyl alcohol, 2-octyldodecanol, cetylstearyl alcohol or oleyl alcohol, fatty acids such as oleic acid.
• Vegetable oils such as castor oil, almond oil, olive oil, sesame oil, cottonseed oil, peanut oil or soybean oil can also be used.
• Suitable solvents, gelling agents and solubilizers are water or water-miscible solvents.
• ethanol or isopropyl alcohol, benzyl alcohol, 2-octyldodecanol, polyethylene glycols, phthalates, adipates, propylene glycol, glycerol, di- or tripropylene glycol, waxes, methyl cellosolve, cellosolve, esters, morpholines, dioxane, dimethyl sulfoxide, dimethyl formuramide, cyclohexanone, etc. are suitable. .
• Cellulose ethers which can dissolve or swell both in water and in organic solvents, such as for example hydroxypropyl methyl cellulose, methyl cellulose, ethyl cellulose or soluble starches.
• Ionic macromolecules in particular are used here, e.g. As sodium carboxymethyl cellulose, polyacrylic acid, polymethacrylic acid and its salts, sodium amylopectin semiglycolate, alginic acid or propylene glycol alginate as the sodium salt, gum arabic, xanthan gum, guar gum or carrageenan.
• glycerol paraffin of different viscosities
• triethanolamine collagen
• allantoin novantisolic acid
• surfactants, emulsifiers or wetting agents may also be necessary for the formulation, e.g. B. of Na lauryl sulfate, fatty alcohol ether sulfates, di-Na-N-lauryl- ⁇ -iminodipropionate, polyoxyethylated castor oil or sorbitan monooleate, sorbitan monostearate, polysorbates (e.g.
• Tween cetyl alcohol, lecithin, glycerol ethylene stearate, polyoxyethylene monostearate, polyoxyethylene phenol , Cetyltrimethylammonium chloride or mono- / dialkylpolyglycol ether-orthophosphoric acid-monoethanolamine salts.
• Stabilizers such as montmorillonites or colloidal silicas to stabilize emulsions or to prevent the breakdown of active substances such as antioxidants, for example tocopherols or butylated hydroxyanisole, or preservatives such as p-hydroxybenzoic acid esters may also be necessary for the preparation of the desired formulations.
• the preparation, filling and sealing of the preparations takes place under the usual antimicrobial and aspetic conditions. Examples of use
• the compounds according to the invention can be prepared using known synthetic methods, for example according to the following variants:
• a spatula tip of dibenzoyl peroxide is added to 30 ml of 1,1,2,2-tetrachloroethane and the mixture is stirred under gentle reflux until conversion is complete. After cooling, the reaction mixture is washed with Na 2 S 2 O 3 solution and water. The solution dried over Na 2 SO 4 is evaporated to dryness. The residue is dissolved in 20 ml of tetrahydrofuran and 2.1 ml of sym-collidine are added while cooling with ice. The reaction mixture is stirred overnight and then poured into an ice-cooled dilute citric acid solution. The product is extracted with dichloromethane, the combined organic phases are dried over Na 2 SO 4 and concentrated.
• Jurkat cells (clone E6-1, batch F-12871, from ATCC, Rockville, MD) are seeded in microtiter plates at about 100,000 cells in 50 ul per well and in the incubator (5% CO 2/37 ° C / 100 % Humidity) pre-incubated.
• RPMI-1640 with HEPES / 10% FCS / 2 mM glutamine / 100 U / ml penicillin / 100 mg / ml streptomycin and 50 ⁇ M mercaptoethanol is used as the medium.
• the substances to be tested are applied in different concentrations (100 ⁇ l per well). For the Spontaneous value and maximum value determination is only applied to medium / 0.2% DMSO.
• D10 cells are 3 days after thawing and cultivation in medium (RPMI-1640 with HEPES / 10% FKS 12 mM glutamine / 100 U / ml penicillin / 100 mg / ml streptomycin and 50 ⁇ M mercaptoethanol) with Rat Stirn ® (Collaborative Biomedical Products , Bedford MA) centrifuged, washed with medium without Rat end ®, well seeded in a concentration of 40,000 to 60,000 cells per in a microtiter plate and incubated at 37 ° C / 5% CO 2/100% humidity incubated for 3.5 hours. The substances to be tested are then applied in various concentrations, 50 ⁇ l per well.
• the maximum value and spontaneous value determinations each receive 50 ⁇ l medium / 0.4% DMSO. After a further 30 minutes of incubation, 50 ⁇ l of anti-CD3 antibody (145-2C11, Cedarlane Laboratories Limited, Hornby / Ontario) are stimulated per well (final dilution 1: 100). The spontaneous value determination receives 50 ⁇ l medium. After overnight incubation, the supernatants are measured in the IL-4 ELISA (Pharmingen: capture mab: 18031 D; detection mab: 18042 D). The IC 5 o-determination was evaluated by logit-log plot.
• D10 cells are 3 days after thawing and culturing in medium (RPMI-1640 with HEPES / 10% FCS / 2 mM glutamine / 100 U / ml penicillin / 100 mg / ml streptomycin and 50 ⁇ M mercaptoethanol) with Rat Stim ® (Collaborative Biomedical Products, Bedford MA) centrifuged, washed with medium without Rat stim, sown in a concentration of 40,000 to 60,000 cells per well in a microtiter plate and incubated at 37 ° C / 5% CO 2 /100% atmospheric humidity for 3.5 hours. The substances to be tested are then applied in various concentrations, 50 ⁇ l per well.
• the maximum value and spontaneous value determinations each receive 50 ⁇ l medium / 0.4% DMSO. After a further 30 minutes of incubation, 50 ⁇ l of anti-CD3 antibody (145-2C11, Cedarlane Laboratories Limited, Hornby / Ontario) are stimulated per well (final dilution 1: 100). The spontaneous value determination receives 50 ⁇ l medium. After overnight incubation, the supernatants are measured in the IL-5 ELISA (Pharmingen: capture mab: 18051 D; detection mab: 18062 D). The IC 5 o-determination was evaluated by logit-log plot.
• the importance of the inhibition of the cytokines IL-2, IL-4 and IL-5 found can be demonstrated in vivo, for example, by examining the influence of the compounds according to the invention on the asthmatic late-phase reaction.
• the inhibition of pulmonary eosinophil infiltration by the substances is tested in an in vivo test on Dunkin-Hartley guinea pigs actively sensitized to ovalbumin.
• the sensitization is carried out with two subcutaneous injections of a suspension of 10 ⁇ g ovalbumin together with 1 mg aluminum hydroxide in 0.5 ml physiological saline as an adjuvant every 14 days. Seven days after the second injection, the animals in the control group that are to be nebulized with ovalbumin are pretreated with mepyramine maleate (10 mg / kg i.p.) to protect them from anaphylactic death.
• ovalbumin aerosol 0.5 mg / ml
• Control animals are nebulized with physiological saline.
• 24 hours after nebulization with ovalbumin (challenge) the animals are anesthetized with an overdose of ethyl urethane (1.5 g / kg body weight i.p.) and bronchoalveolar lavage is carried out with 2 x 5 ml of physiological saline.
• the lavage liquid is collected, centrifuged at 300 rpm for 10 min and then the cell pellet is resuspended in 1 ml of physiological saline.
• the eosinophils are stained using the Becton-Dickinson Test Kit (N. 5877) for eosinophils and counted in a Neubauer chamber. Two control groups (nebulization with physiological saline and nebulization with ovalbumin solution) are included in each test.
• test substances are administered intraperitoneally or orally as a suspension in 10% polyethylene glycol 300 and 0.5% 5-hydroxyethyl cellulose 2 hours before Allergen challenge applied.
• control groups are treated with the vehicle according to the application form of the test substance.
• the number of animals per control and test group is 3-10. The results are shown in the table below:
• the compounds according to the invention are therefore particularly suitable for the production of medicaments for the treatment of diseases which are associated with the action of eosinophils.

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