Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
  • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
  • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
  • C07D333/54—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P35/00—Antineoplastic agents
• • 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
• • 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
  • A61P9/06—Antiarrhythmics
• • 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
  • A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
  • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
  • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
  • C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
  • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
  • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
  • C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
  • C07D333/64—Oxygen atoms
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
  • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
  • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
  • C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
  • C07D333/66—Nitrogen atoms not forming part of a nitro radical
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
  • C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
  • C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
  • C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
  • C07D333/68—Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen

Definitions

• the invention relates to cyclic sulfones of the formula I.
• R2 each independently of one another H, A, CF 3 , CH 2 F, CHF 2 , 5 C 2 F 5 , shark, OH, OA, NH 2 , NHA, NA 2 , N0 2 or CN,
• Re and R 7 each independently of one another H, A, R3, shark, OH, OA, SH, 5 SA, NH 2 , NHA or NA 2 or else
• R7 and R ⁇ together also each form a bond, with a maximum of only one such bond being able to occur in each molecule;
• R ⁇ and R9 are each independently H or A,
• R3 is phenyl or benzyl which is unsubstituted or mono-, di- or trisubstituted by A, OA, NH 2 , NHA, NA 2 , F, Cl, Br and / or CF 3 and
• the object of the invention was to find new compounds with valuable properties, in particular those which can be used for the production of medicaments.
• the new compounds are inhibitors of the cellular Na + / H + antiporter, ie active substances that inhibit the NaVH + exchange mechanism of the cells (Düsing et al., Med. Klin. 8_Z, 378-384 ( 1992)) and thus represent good antiarrhythmics, which are particularly suitable for the treatment of arrhythmias that occur as a result of lack of oxygen.
• the best-known active ingredient in the group of acylguanidines is amiloride. However, this substance primarily shows an antihypertensive and saluretic effect, which is particularly undesirable in the treatment of cardiac arrhythmia, while the antiarrhythmic properties are only very weak.
• Benzoylguanidines are e.g. described in DE 44 04 183. However, the compounds described in the prior art are structurally distinctly different from those claimed here.
• the invention relates to compounds of the formula I and their physiologically acceptable salts.
• the substances according to the invention of the present application show a good cardioprotective effect and are therefore particularly suitable for the treatment of infarct, prophylaxis of the infarct and for the treatment of angina pectoris. Furthermore, the substances counteract all pathological hypoxic and ischemic damage, so that the diseases caused primarily or secondarily can be treated.
• the active ingredients are also well suited for preventive applications.
• the compounds can also be used as therapeutic agents in diseases caused by cell proliferation, such as arteriosclerosis, diabetic late complications, tumor diseases, fibrotic diseases, in particular of the lungs, liver and kidneys, and organ hypertrophies and hyperplasias.
• diseases caused by cell proliferation such as arteriosclerosis, diabetic late complications, tumor diseases, fibrotic diseases, in particular of the lungs, liver and kidneys, and organ hypertrophies and hyperplasias.
• the Substances for diagnostic use for the detection of diseases which are accompanied by increased activity of the Na + / H + antiporter for example in erythrocytes, thrombocytes or leukocytes.
• the effects of the compounds can be determined with the aid of methods known per se, such as e.g. by N. Escobales and J. Figueroa in J. Membrane Biol. 120, 41-49 (1991) or by L Counillon, W. Scholz, HJ. Lang and J. Pouyssegur in Mol. Pharmacol. 44, 1041-1045 (1993).
• Suitable experimental animals are e.g. Mice, rats, guinea pigs, dogs, cats, monkeys or pigs.
• the compounds can therefore be used as active pharmaceutical ingredients in human and veterinary medicine. They can also be used as intermediate products for the production of further active pharmaceutical ingredients.
• A denotes a branched or unbranched alkyl group with 1-6, preferably 1-4, in particular 1, 2 or 3
• C atoms in particular preferably methyl, further preferably ethyl, propyl, isopropyl, butyl, isobutyl, further preferably sec-butyl, tert-butyl, pentyl, isopentyl (3-methylbutyl), hexyl or isohexyl (4-methyl- pentyl).
• Ri preferably denotes A, in particular methyl or ethyl, or hydrogen.
• R2 is preferably hydrogen, while R3 is preferably phenyl or benzyl.
• R ⁇ and Rs are preferably independently of one another H, methyl or ethyl.
• R5 and Re or R? however, and R ⁇ can also each be a bond together, although it applies that only one such bond can be present per molecule.
• the invention relates in particular to those compounds of the formula I in which at least one of the radicals mentioned has one of the preferred meanings indicated above.
• Some preferred groups of compounds can be expressed by the following formulas Ia to Ig, which correspond to the formula I and in which the radicals not specified have the meaning given for the formula I, but in which
• the invention further relates to a process for the preparation of the compounds of the formula I according to claim 1, and of their salts, characterized in that a compound of the formula II
• Q denotes Cl, Br, OA, O-CO-A, O-CO-Ph, OH or another reactive esterified OH group or easily nucleophilically substitutable leaving group
• the compounds of the formula I are otherwise prepared by methods known per se, as described in the literature (for example in the standard works such as Houben-Weyl, Methods of Organic Chemistry, Georg-Thieme-Verlag, Stuttgart; Organic Reactions, John Wiley & Sons , Inc., New York; and in the above-mentioned patent application), under reaction conditions which are known and suitable for the reactions mentioned. Use can also be made of variants which are known per se and are not mentioned here in detail.
• the starting materials can also be formed in situ, in such a way that they are not isolated from the reaction mixture, but instead are immediately reacted further to give the compounds of the formula I.
• Compounds of the formula I are preferably prepared by reacting an activated carboxylic acid derivative of the formula II, where Q is particularly preferably Cl or -0-CH 3 , with guanidine.
• Q is particularly preferably Cl or -0-CH 3
• Methods in which intermediate isolation is unnecessary are, for example, activation with carbonyldiimidazole, dicyclohexylcarbodiimide or the Mukayama variant (Angew. Chem. 91, 788-812 (1979)).
• the carboxylic acids of formula II and their derivatives used as intermediates can be prepared, for example, by
• the cyclic sulfones obtained in this way can be further dervated or cyclized by customary methods.
• Formula II with guanidine is carried out in a manner known per se, preferably in a protic or aprotic polar or non-polar inert organic solvent.
• Suitable bases are preferably, for example, alkali metal or alkaline earth metal hydroxides, carbonates, alcoholates or organic bases such as triethylamine or pyridine, which are also used in excess and can then simultaneously serve as solvents.
• Alcohols such as methanol, ethanol, isopropanol, n-butanol or tert-butanol are particularly suitable as inert solvents; Ethers such as diethyl ether, diisopropyl ether, THF or dioxane; Glycol ethers such as ethylene glycol monomethyl or monoethyl ether (methyl glycol or ethyl glycol), ethylene glycol dimethyl ether (diglyme); Ketones such as acetone or butanone; Nitriles such as acetonitrile; Nitro compounds such as nitromethane or nitrobenzene; Esters such as ethyl acetate; Amides such as phosphoric acid hexamethyl triamide; Sulfoxides such as dimethyl sulfoxide (DMSO); chlorinated hydrocarbons such as dichloromethane, chloroform, trichlorethylene, 1, 2-dichloroethane or carbon tetrachloride; Hydrocarbon
• Particularly suitable solvents are methanol, THF, dimethoxyethane, dioxane, water or mixtures which can be prepared therefrom.
• temperatures between 20 ° and the boiling point of the solvent are suitable as the reaction temperature.
• the reaction times are between 5 minutes and 12 hours.
• an acid scavenger in the reaction.
• Any type of base that does not interfere with the reaction itself is suitable for this.
• the use of inorganic bases such as potassium carbonate or of organic bases such as triethylamine or pyridine or an excess of guanidine is particularly suitable.
• the compounds of the formula I can be obtained by removing them from their functional derivatives by solvolysis, in particular
• Preferred starting materials for solvolysis or hydrogenolysis are those which otherwise correspond to the formula I, but instead of one or more free amino and / or hydroxyl groups, correspondingly protected groups
• Contain amino and / or hydroxyl groups preferably those which, instead of an H atom which is connected to an N atom, carry an amino protecting group, in particular those which, instead of an HN group, have an R'-N- Carry a group in which R 'is an amino protecting group, and / or those which carry a hydroxyl protective group instead of the H atom of a hydroxyl group, for example those which correspond to the formula I but carry an OR "group instead of an OH group, where R" denotes a hydroxyl protective group.
• amino protecting group is generally known and refers to groups which are suitable for protecting (blocking) an amino group from chemical reactions, but which are easily removable after the desired chemical reaction has occurred at another point on the Molecule has been carried out.
• Typical of such groups are in particular unsubstituted or substituted acyl, aryl (for example 2,4-dinitrophenyl (DNP)), aralkoxymethyl (for example benzyloxymethyl (BOM)) or aralkyl groups (for example benzyl, 4-nitrobenzyl) , Triphenylmethyl).
• acyl group is to be understood in the broadest sense in connection with the present process. It encompasses acyl groups derived from aliphatic, araliphatic, aromatic or heterocyclic carboxylic acids or sulfonic acids, and in particular
• Alkoxycarbonyl, aryloxycarbonyl and especially aralkoxycarbonyl groups are alkanoyl such as acetyl, propionyl, butyryl; Aralkanoyl such as phenylacetyl; Aroyl such as benzoyl or toluoyl; Aryloxyalkanoyl such as phenoxyacetyl; Alkoxycarbonyl such as methoxycarbonyl, ethoxycarbonyl, 2,2,2-trichloroethoxycarbonyl, isopropoxycarbonyl, tert.
• alkanoyl such as acetyl, propionyl, butyryl
• Aralkanoyl such as phenylacetyl
• Aroyl such as benzoyl or toluoyl
• Aryloxyalkanoyl such as phenoxyacetyl
• Alkoxycarbonyl such as methoxycarbonyl, ethoxycarbonyl, 2,2,2-t
• hydroxyl protecting group is also generally known and refers to groups which are suitable for protecting a hydroxyl group against chemical reactions, but which are easily removable after the desired chemical reaction has been carried out elsewhere in the molecule.
• Typical of such groups are the unsubstituted or substituted aryl, aralkyl or acyl groups mentioned above, and also alkyl groups.
• the nature and size of the hydroxyl protective groups is not critical since they are removed again after the desired chemical reaction or reaction sequence; groups with 1-20, in particular 1-10, carbon atoms are preferred.
• Examples of hydroxyl protecting groups include tert-butyl, benzyl, p-nitrobenzyl, p-toluenesulfonyl and acetyl, with benzyl and acetyl being particularly preferred.
• the functional derivatives of the compounds of the formula I to be used as starting materials can be prepared by customary methods, such as those e.g. are described in the mentioned standard works and patent applications, e.g. by reacting compounds corresponding to formulas II and III, but at least one of these compounds contains a protective group instead of an H atom.
• the liberation of the compounds of formula I from their functional derivatives succeeds - depending on the protective group used - e.g. with strong acids, suitably with trifluoroacetic acid or perchloric acid, but also with other strong inorganic acids such as hydrochloric acid or sulfuric acid, strong organic carboxylic acids such as trichloroacetic acid or sulfonic acids such as benzene or p-toluenesulfonic acid.
• strong acids suitably with trifluoroacetic acid or perchloric acid
• other strong inorganic acids such as hydrochloric acid or sulfuric acid
• strong organic carboxylic acids such as trichloroacetic acid or sulfonic acids
• benzene or p-toluenesulfonic acid strong organic carboxylic acids
• the presence of an additional inert solvent is possible, but not always necessary.
• Suitable inert solvents are preferably organic, for example carboxylic acids such as acetic acid, ethers such as tetrahydrofuran (THF) or dioxane, amides such as dimethylformamide (DMF), halogenated hydrocarbons such as dichloromethane, and also alcohols such as methanol, ethanol or isopropanol and water.
• carboxylic acids such as acetic acid
• ethers such as tetrahydrofuran (THF) or dioxane
• amides such as dimethylformamide (DMF)
• halogenated hydrocarbons such as dichloromethane
• Trifluoroacetic acid is preferably used in excess without the addition of another solvent, perchloric acid in the form of a mixture of acetic acid and 70% perchloric acid in a ratio of 9: 1.
• the reaction temperatures for the cleavage are advantageously between about 0 and about 50 °; preferably one works between 15 and 30
• the BOC group can, for example, preferably with 40% ' ⁇ ger trifluoroacetic acid in dichloromethane or using approximately 3 to 5 n HCl in dioxane at 15-60 ° Weden th pickspal-, the FMOC group using an approximately 5-20% solution of
• the DNP group can be split off, e.g. also with an approximately 3-10% solution of 2-mercaptoethanol in DMF / water at 15-30 °.
• Hydrogenolytically removable protective groups e.g. BOM, CBZ or
• Benzyl can e.g. by treatment with hydrogen in the presence of a catalyst (e.g. a noble metal catalyst such as palladium, suitably on a support such as coal).
• a catalyst e.g. a noble metal catalyst such as palladium, suitably on a support such as coal.
• Suitable solvents are those given above, in particular e.g. Alcohols like methanol or ethanol or amides like DMF.
• Hydrogenation is generally carried out at temperatures between about 0 and 100 ° and pressures between about 1 and 200 bar, preferably at 20-30 ° and 1-10 bar. Hydrogenolysis of the CBZ group succeeds e.g. good on 5-10% Pd-C in methanol at 20-30 °.
• a base of the formula I can also be converted into the associated acid addition salt using an acid.
• Acids which provide physiologically acceptable salts are suitable for this reaction.
• So inorganic acids can be used, for example sulfuric acid.
• the compounds of the formula I contain one or more chiral centers and can therefore be present in racemic or in optically active form. Racemates obtained can be separated mechanically or chemically into the enantiomers by methods known per se. Diastereomers are preferably formed from the racemic mixture by reaction with an optically active release agent. Suitable release agents are e.g. optically active acids, such as the D and L forms of tartaric acid, diacetyl tartaric acid, dibenzoyl tartaric acid, mandelic acid, malic acid, lactic acid or the various optically active camphorsulfonic acids such as ß-camphorsulfonic acid. Enantiomer separation using a column filled with an optically active separating agent (e.g. dinitrobenzoylphenylglycine) is also advantageous.
• an optically active separating agent e.g. dinitrobenzoylphenylglycine
• optically active compounds of the formula I by the methods described above by using starting materials (for example those of the formula II) which are already optically active.
• the compounds of formula I and their physiologically acceptable salts can be used for the production of pharmaceutical preparations, in particular in a non-chemical way.
• they can be brought into a suitable dosage form together with at least one solid, liquid and / or semi-liquid carrier or auxiliary and, if appropriate, in combination with one or more further active ingredient (s).
• the invention furthermore relates to compositions, in particular pharmaceutical preparations, comprising at least one compound of the formula I and / or one of its physiologically acceptable salts.
• Suitable carriers are organic or inorganic substances which are suitable for enteral (for example oral), parenteral or topical application and do not react with the new compounds, for example water, vegetable oils, benzyl alcohols, polyethylene glycols, glycerol triacetate, gelatin , Carbohydrates such as lactose or starch, magnesium stearate, talc, lanolin, petroleum jelly.
• tablets, dragees, capsules, syrups, juices or drops are used, for rectal use suppositories, for parenteral use, solutions, preferably oily or aqueous solutions, furthermore suspensions, emulsions or implants, for topical use, ointments, creams, pastes, Lotions, gels, sprays, foams, aerosols, solutions (e.g. solutions in alcohols such as ethanol or isopropanol, acetonitrile, DMF, dimethylacetamide, 1,2-propanediol or their mixtures with one another and / or with water) or powder.
• the new compounds can also be lyophilized and the lyophilizates obtained e.g. can be used for the production of injectables.
• Liposomal preparations are also particularly suitable for topical use.
• the specified preparations can be sterilized and / or contain auxiliary substances such as lubricants, preservatives, stabilizers and / or wetting agents, emulsifiers, salts for influencing the osmotic pressure, buffer substances, coloring, flavoring and / or flavoring substances. If desired, they can also contain one or more other active ingredients, e.g. one or more vitamins.
• the compounds of the formula I and their physiologically acceptable salts can be administered to humans or animals, in particular mammals such as monkeys, dogs, cats, rats or mice and in the therapeutic treatment of the human or animal body and be used in combating diseases, in particular in the therapy and / or prophylaxis of disorders of the cardiovascular system. They are therefore suitable for the treatment of arrhythmias, in particular if they are caused by lack of oxygen, of angina pectoris, infarcts, ischemia of the nervous system such as, for example
• the substances can also be used as therapeutic agents in diseases in which cell proliferation plays a role, such as arteriosclerosis, late diabetic complications, tumor diseases, fibrosis and organ hypertrophies and hyperplasias, in particular in prostate diseases.
• the substances according to the invention are generally used in analogy to known antiarrhythmics, e.g. Aprindine administered, preferably in doses between about 0.01 and 5 mg, in particular between 0.02 and 0.5 mg per dosage unit.
• the daily dosage is preferably between about 0.0001 and 0.1, in particular between 0.0003 and 0.01 mg / kg body weight.
• the specific dose for each particular patient depends on a wide variety of factors, for example on the effectiveness of the special compound used, on the age, body weight, general health, gender, on the diet, on the time and route of administration, on the rate of elimination , Drug combination and severity of the respective disease to which the therapy applies. Oral application is preferred.
• customary workup means:
• 6-carbonyl chloride-1,1-dioxide [obtainable by reacting 1.9 g of 2,3-dihydro-3,5-dimethyl-1-benzothiophene-6-carboxylic acid-1,1-dioxide with 10 ml of thionyl chloride under Exclusion of moisture and stirring over 4 hours at the boil], added dropwise in 10 ml EDME. The reaction mixture is then allowed to cool to room temperature and is stirred 1
• a guanidine solution prepared as described in Example 3 from 547 mg of sodium, 12 ml of methanol and 2.5 g of guanidine hydrochloride is mixed with 1.2 g of 2,3-dihydro-5-methyl-3-methylene-1- methyl benzothiophene-6-carboxylate-1,1-dioxide [prepared by cyclization of methyl 4-acetyl-2-methyl-5-methylsulfonylbenzoate and subsequent dehydration] and the mixture was boiled for one hour and then stirred for a further hour at room temperature and worked up as usual.
• N-diaminomethylene-6-methyl-1,3-benzoxathiol-5-carboxamide-3,3-dioxide from 1,3-benzoxathiol-5-carboxylic acid methyl ester-3,3-dioxide the N-diaminomethylene-1,3-benzoxathiol-5-carboxamide-3,3-dioxide;
• 1,1-dioxide the 7-N-diaminomethylene-carbamoyl-6-ethyl-3,4-dihydro-2H-1,4-benzothiazine-1,1-dioxide;
• Example A Injection glasses
• a solution of 100 g of an active ingredient of the formula I and 5 g of disodium hydrogenphosphate are adjusted to pH 6.5 in 3 l of double-distilled water with 2N hydrochloric acid, sterile filtered, filled into injection glasses, lyophilized under sterile conditions and sealed sterile . Each injection jar contains 5 mg of active ingredient.
• a mixture of 20 g of an active ingredient of the formula I is melted with 100 g of soy lecithin and 1400 g of cocoa butter, poured into molds and allowed to cool. Each suppository contains 20 mg of active ingredient.
• a solution of 1 g of an active ingredient is prepared of the formula I, 9.38 g of NaH 2 P0 4 • 2 H 2 0, 28.48 g Na 2 HP0 4 • 12 H 2 0 and 0.1 g of benzalkonium chloride in 940 ml of double distilled water. It is adjusted to pH 6.8, made up to 1 I and sterilized by irradiation. This solution can be used in the form of eye drops.
• Example D ointment
• Example E tablets
• a mixture of 1 kg of active ingredient of the formula I, 4 kg of lactose, 1, 2 kg of potato starch, 0.2 kg of talc and 0.1 kg of magnesium stearate is compressed into tablets in a conventional manner such that each tablet contains 10 mg of active ingredient .
• Example F coated tablets
• Example E tablets are pressed, which are then coated in a conventional manner with a coating of sucrose, potato starch, talc, tragacanth and colorant.
• Example G capsules
• each capsule contains 20 mg of the active ingredient.
• a solution of 1 kg of active ingredient of the formula I in 60 l of double-distilled water is sterile filtered, filled into ampoules, lyophilized under sterile conditions and sealed under sterile conditions. Each ampoule contains 10 mg of active ingredient.

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