USRE30633E - 3-Lower alkylcarbamylsulfonamido-4-phenylaminopyridines, n-oxides, derivatives thereof and pharmaceutical compositions containing same - Google Patents
3-Lower alkylcarbamylsulfonamido-4-phenylaminopyridines, n-oxides, derivatives thereof and pharmaceutical compositions containing same Download PDFInfo
- Publication number
- USRE30633E USRE30633E US06/119,601 US11960180A USRE30633E US RE30633 E USRE30633 E US RE30633E US 11960180 A US11960180 A US 11960180A US RE30633 E USRE30633 E US RE30633E
- Authority
- US
- United States
- Prior art keywords
- group
- sub
- formula
- alkyl
- phenylaminopyridine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime, expires
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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 ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/74—Amino or imino radicals substituted by hydrocarbon or substituted hydrocarbon radicals
-
- 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
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/10—Antioedematous agents; Diuretics
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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 ring carbon atoms
- C07D213/62—Oxygen or sulfur atoms
- C07D213/70—Sulfur atoms
- C07D213/71—Sulfur atoms to which a second hetero atom is attached
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/89—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members with hetero atoms directly attached to the ring nitrogen atom
Definitions
- This invention relates to new derivatives of pyridine, their preparation and use.
- X represents an amino, C 1 -C 4 -alkylamino, oxy or thio group
- R 1 represents a group of the formula:
- R 3 represents a C 1 -C 4 -alkyl, alkenyl, cycloalkyl or phenyl group, the latter being possibly substituted, or a group of the formula R 4 CO (III), wherein R 4 represents a phenyl group which may be substituted;
- R 2 represents hydrogen or a C 1 -C 4 -alkyl group
- Z represents a C 1 -C 4 -alkyl, methylfuryl, pyridyl or phenyl group, the phenyl group being possibly substituted by one or more substituents selected from the C 1 -C 4 -alkyl, alkoxy, halo, trifluoromethyl, nitro groups, with the provisos that:
- Z may only represent a phenyl group as defined hereabove;
- Z may only represent a C 1 -C 4 -alkyl group or a phenyl group as defined hereabove and R 1 may further represent a group of the formula:
- R 5 represents hydrogen or a C 1 -C 4 -alkyl group
- R 1 may further represent hydrogen or a group of the formula (IV) as above defined.
- this invention relates to the cyclization products of the formula: ##STR3## in which R 2 and R 4 have the above meanings, said cyclization products being obtained spontaneously together with the compounds of formula I, in which X, Z and R 1 have the meanings given in this paragraph.
- the invention also relates to the N-oxides of the compounds of formula I in which the oxygen atom is attached to the nitrogen atom of the pyridin, and to the base and acid addition salts of said compounds of formulae I and V.
- the compounds according to this invention i.e. the compounds of formulae I and V, may be prepared by various processes:
- the process comprises reacting a compound of the following fomula: ##STR4## with an isocyanate or isothiocyanate of the formula:
- the process comprises reacting a compound of formula VI with an alkylhaloformate of the formula: ##STR5## in which R 7 represents a C 1 -C 4 -alkyl group and Hal represents an halogen atom, and an amine of the formula:
- R 8 represents hydrogen or a C 1 -C 4 -alkyl group, R 2 , Hal, R 3 and Z having the above meanings.
- the process comprises reacting a compound of VI with an anhydride of an alkane-carboxylic acid of the formula:
- the process comprises heating a compound of formula I, in which R 1 represents a R 3 NHCS group, in an aqueous-alcoholic solution of sodium carbonate with an excess of HgO.
- the process comprises treating a compound of formula I with meta-chloroperoxy-benzoic acid.
- the compounds of formula VI which are used as starting material in the first and sixth processes, may be prepared by the fourth above-described process or by reacting an aliphatic amine with a 4-halogeno-pyridine sulfonamide according to the third above-described process.
- the compounds to be tested are given as freshly prepared solutions or suspensions by oral route 1 hour before injecting the paw of rats with carrageenan which is a known inflammatory agent.
- the inflammatory agent either in solution or suspension is then injected into the plantar tissue of the right hind paw of each rat, the left paw remaining untreated and serving as control.
- Each animal receives, for example, 0.05 ml of an aqueous solution containing 1% by weight of carrageenan and 0.9% of sodium chloride.
- the anti-inflammatory effect expressed as a percentage of inhibition is obtained by comparison between rats treated with the anti-inflammatory compound and a control group of rats.
- the compound to be tested was administered by .[.gastric gavage at a dose of 50 ml/kg as a solution or a.]. .Iadd.gastric gavage at a dose of 50 mg/kg as a solution or a .Iaddend.suspension in water containing 0.45% of methylcellulose (which is an inert mucilaginous substance). Control animals received only distilled water as a placebo. At the same time, all the animals received 25 ml/kg of physiological saline by subcutaneous injection.
- the rats were then placed in metabolic cages, each cage containing 3 animals receiving the same treatment.
- the urines have been collected during 4 hours.
- the increase of urine volume in the treated animals compared with the urine volume of the control animals shows the diuretic action.
- the diuresis is expressed in ml/kg of body weight.
- This invention relates therefore also to pharmaceutical compositions containing as active ingredient at least one compound of the formula I or V, or a N-oxide or such a compound or a base- or acid-addition salt thereof, together with a pharmaceutically acceptable vehicle or carrier.
- the compounds of this invention may be administered in the form of dragees, tablets, capsules and suppositories at daily doses of 50 to 300 mg of active compound.
- 3-sulfonamido-4-(3'-chloro)-phenylaminopyridine (0.02 mole) is reacted with n-butylisocyanate (0.025 mole) in the presence of 1 to 2 ml of triethylamine by heating at 85°-95° C. during 10 hours.
- the residue is taken up with alcohol (30 ml) and NaOH 2 N, acidified by means of acetic acid and then diluted with an excess of water which gives a precipitate.
- the mixture is treated with a 5% solution of sodium bicarbonate in a mixture (3:1) of water and alcohol during 1 hour, then filtered and acidified, whereby the desired product precipitates.
- the same product is obtained by reacting in acetone a mixture of ethyl chloroformate (0.06 mole), 3-sulfonamido-4-(3'-chloro)-phenylaminopyridine (0.05 mole) and potassium carbonate (8.5 g), by reflux heating with stirring for 2 hours.
- the acetone is distilled off and the residue is poured into an excess of water which is acidified by means of hydrochloric acid.
- the product is in the form of white crystals, m.p. 139°-140° C.
- This product is prepared by the methods described in parts A and C of Example 1, using each time the appropriate starting materials.
- White crystals m.p. 166°-168° C.
- This product is prepared by the methods described in parts A and C or Example 1, using each time the appropriate starting materials.
- White crystals m.p. 126°-128° C.
- the reacted mixture is poured into an excess of 10% NaOH, filtered whenever necessary and acidified by means of acetic acid which gives a precipitate.
- the precipitate is dissolved in 100 ml of 5% sodium bicarbonate in a mixture of water and alcohol (3:1). The mixture thus obtained is filtered and the filtrate is acidified to give the desired product as a yellowish white product, m.p. 247° C.
- 3-sulfonamido-4-(3'-chloro)-thiophenoxypyridine (5 g) is contacted with pyridine (25 ml) and acetic anhydride (25 ml) during 3 hours.
- the reacted mixture is poured into an excess of 10% NaOH, filtered if necessary and acidified by means of acetic acid.
- the product is separated, purified by dissolution in 200 ml of 5% NaHCO 3 in a mixture of water and alcohol (3:1) and again precipitated by means of acetic acid.
- the desired product is obtained from 3-sulfonamido-4-(3'-chloro)-thiophenoxypyridine as described in part A of Example 1.
- First process--3-sulfonamido-4-(3'-chloro)-phenoxypyridine (0.01 mole) is intimately mixed with propylisocyanate (0.0125 mole) and triethylamine (0.5-1 ml).
- the mixture thus obtained is maintained 4 hours at 85°-95° C., taken up with 50 ml of alcohol and a few ml of NaOH 2 N, heated to dissolve any soluble matter, acidified with acetic acid 300 ml of water are then added thereto.
- the product is purified and isolated as described previously, using a solution of NaHCO 3 to give small white crystals; m.p. 177°-179° C.
- reaction mixture is maintained 1 hour at 50° C. under stirring, then diluted by 250 ml of water and acidified.
- the crude product is purified by dissolution in a water-alcohol solution of NaHCO 3 and back-precipitation by means of acetic acid; (m.p. 175°-177° C.).
- the reactants are preferably heated to 120° C. in a closed reaction vessel.
- an intermediate solvent such as propyleneglycol is used (m.p. 193° C.).
- This product is conveniently prepared by applying any of the processes described in Examples 1A and 1C with very good results; m.p. 208°-209° C.
- 4-chlorosulfonamidopyridine-N-oxide (m.p. 217°-219° C.) is first condensed with toluidine using the usual method. 0.01 mole of the 3-sulfonamido-4-(3'-methyl)-phenylaminopyridine-N-oxide thus obtained is reacted, in the form of its sodium salt, with 0.011 mole of isopropylisocyanate in 50 ml of a (1:1) water-dioxane mixture for 1 hour at about 40° C. The mixture is diluted with 250 ml of water and adjusted to pH 4-5. The crude product is purified by dissolution in a water-alcohol (3:1) solution of NaHCO 3 and back precipitation by means of HOAC.
- Example 1A This compound is obtained by any one of the methods described in Example 1. It is however preferred to apply the method of Example 1A using as starting materials ethyl isocyanate and 3-sulfonamido-4-(3'-chloro)-phenylamino-5-methylpyridine (m.p. 251° C.).
Landscapes
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pharmacology & Pharmacy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Hematology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Engineering & Computer Science (AREA)
- Pain & Pain Management (AREA)
- Rheumatology (AREA)
- Diabetes (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Pyridine Compounds (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
This invention relates to new derivatives of pyridine having anti-inflammatory and diuretic properties.
The new derivatives of pyridine may be represented by the following general formula: ##STR1## in which X represents an amino, C1 -C4 -alkylamino, oxy or thio group, R1 represents a group of the formula R3 NHCA (II), wherein A represents oxygen or sulfur, and R3 represents a C1 -C4 -alkyl, alkenyl, cycloalkyl, phenyl (which may be substituted) or R4 CO (III) group, R4 representing a phenyl group (which may be substituted), R2 represents hydrogen or a C1 -C4 alkyl group and Z represents a C1 -C4 -alkyl, methylfuryl, pyridyl or phenyl group (which may be substituted).
This invention relates also to the N-oxides of the compounds of formula I, as well as to the acid and base addition salts of said compounds.
Description
.Iadd.This application is a Continuation of Re-issue application, Ser. No. 031,101 filed 4-18-79, now abandoned, which in turn is a Re-issue application of U.S. Pat. No. 4,018,929 issued 4-19-77. .Iaddend.
This invention relates to new derivatives of pyridine, their preparation and use.
The new derivatives of pyridine are of the following general formula: ##STR2## in which
X represents an amino, C1 -C4 -alkylamino, oxy or thio group;
R1 represents a group of the formula:
R.sub.3 NHCA (II),
wherein A represents oxygen or sulfur and R3 represents a C1 -C4 -alkyl, alkenyl, cycloalkyl or phenyl group, the latter being possibly substituted, or a group of the formula R4 CO (III), wherein R4 represents a phenyl group which may be substituted;
R2 represents hydrogen or a C1 -C4 -alkyl group, and Z represents a C1 -C4 -alkyl, methylfuryl, pyridyl or phenyl group, the phenyl group being possibly substituted by one or more substituents selected from the C1 -C4 -alkyl, alkoxy, halo, trifluoromethyl, nitro groups, with the provisos that:
1. when X represents an amino group, Z, R1, R2, R3 and R4 may have all the above indicated meanings;
2. when X represents an oxy or thio group, Z may only represent a phenyl group as defined hereabove;
3. when X represents an alkylamino group, Z may only represent a C1 -C4 -alkyl group or a phenyl group as defined hereabove and R1 may further represent a group of the formula:
R.sub.5 CO (IV),
in which R5 represents hydrogen or a C1 -C4 -alkyl group;
4. when X represents an amino group and Z is other than a phenyl group, or when X represents an oxy or thio group, R1 may further represent hydrogen or a group of the formula (IV) as above defined.
When, in the compounds of formula I, X represents an imino group, Z a phenyl group and R1 a group of formula III, this invention relates to the cyclization products of the formula: ##STR3## in which R2 and R4 have the above meanings, said cyclization products being obtained spontaneously together with the compounds of formula I, in which X, Z and R1 have the meanings given in this paragraph.
The invention also relates to the N-oxides of the compounds of formula I in which the oxygen atom is attached to the nitrogen atom of the pyridin, and to the base and acid addition salts of said compounds of formulae I and V.
The compounds according to this invention, i.e. the compounds of formulae I and V, may be prepared by various processes:
When it is desired to obtain a compound of formula I, wherein R1 represents a R3 NHCA group as defined above, the process comprises reacting a compound of the following fomula: ##STR4## with an isocyanate or isothiocyanate of the formula:
R.sub.3 N═C═A (VII),
in which Z, R2, R3 and A have the above meanings.
When it is desired to obtain a compound of formula I, wherein R1 represents a R3 NHCO group as defined above, the process comprises reacting a compound of formula VI with an alkylhaloformate of the formula: ##STR5## in which R7 represents a C1 -C4 -alkyl group and Hal represents an halogen atom, and an amine of the formula:
R.sub.3 NH.sub.2 (IX),
in which R3 has the above meanings.
When it is desired to obtain a compound of formula I, wherein R1 represents a R3 NHCA group as defined above and X represents an imino or alkylimino group, the process comprises reacting a compound of the formula: ##STR6## with an amine of the formula:
R.sub.8 --NH--Z (XI),
wherein R8 represents hydrogen or a C1 -C4 -alkyl group, R2, Hal, R3 and Z having the above meanings.
When it is desired to obtain a compound of formula I, wherein Z represents a phenyl group which may be substituted in the manner defined above, R1 represents hydrogen or a R3 NHCA group as above defined or a R4 CO or R5 CO group as above defined and X represents a thio or oxy group, the process comprises reacting a compound of the formula: ##STR7## with a phenolate or thiophenolate of the formula:
Na--X--Z (XIII).
When it is desired to obtain a compound of formula I, wherein R1 represents a R4 CO or R5 CO group as defined above, or a compound of formula V, the process comprises reacting a compound of VI with an anhydride of an alkane-carboxylic acid of the formula:
(R.sub.4 --CO).sub.2 O or (R.sub.5 --CO).sub.2 O (XIV)
or with a chloride of an alkane-carboxylic acid of the formula:
R.sub.4 COCl or R.sub.5 CoCl (XV).
When it is desired to obtain a compound of formula I, in which X, Z and R2 have the above meanings and R1 represents R3 NHCO, the process comprises heating a compound of formula I, in which R1 represents a R3 NHCS group, in an aqueous-alcoholic solution of sodium carbonate with an excess of HgO.
When it is desired to obtain the N-oxides of the compounds of formula I, the above processes are applied, except that the corresponding N-oxides of the starting pyridine derivatives are used.
When it is desired to obtain the N-oxides of the compounds of formula I, the process comprises treating a compound of formula I with meta-chloroperoxy-benzoic acid.
The compounds of formula VI, which are used as starting material in the first and sixth processes, may be prepared by the fourth above-described process or by reacting an aliphatic amine with a 4-halogeno-pyridine sulfonamide according to the third above-described process.
It has been found that the compounds of formulae I and V have anti-inflammatory and diuretic properties.
These properties have been determined by the following tests.
1. Pharmacological test for anti-inflammatory properties.
The compounds to be tested are given as freshly prepared solutions or suspensions by oral route 1 hour before injecting the paw of rats with carrageenan which is a known inflammatory agent.
The inflammatory agent (carrageenan) either in solution or suspension is then injected into the plantar tissue of the right hind paw of each rat, the left paw remaining untreated and serving as control. Each animal receives, for example, 0.05 ml of an aqueous solution containing 1% by weight of carrageenan and 0.9% of sodium chloride.
4 hours after the injection of the inflammatory agent, the importance of swelling is determined by plethysmography and is expressed as a percent of the volume of the control paw.
The anti-inflammatory effect expressed as a percentage of inhibition is obtained by comparison between rats treated with the anti-inflammatory compound and a control group of rats.
2. Pharmacological tests for diuretic properties
Lots of 3 rats weighting 250-300 g have been constituted at random, each of them being submitted to the same treatment.
The compound to be tested was administered by .[.gastric gavage at a dose of 50 ml/kg as a solution or a.]. .Iadd.gastric gavage at a dose of 50 mg/kg as a solution or a .Iaddend.suspension in water containing 0.45% of methylcellulose (which is an inert mucilaginous substance). Control animals received only distilled water as a placebo. At the same time, all the animals received 25 ml/kg of physiological saline by subcutaneous injection.
The rats were then placed in metabolic cages, each cage containing 3 animals receiving the same treatment. The urines have been collected during 4 hours.
The increase of urine volume in the treated animals compared with the urine volume of the control animals shows the diuretic action. The diuresis is expressed in ml/kg of body weight.
The results of the tests made with a great number of compounds according to this invention are given in the following table.
TABLE
______________________________________
Compounds Pharmacological properties
Code Exam- Diuresis % inhibition
Number ple ml/kg of acute oedema
______________________________________
C 2129 11 30.3 23.2
JDL 181 77 14.8 21.6
344 1 66.9 82.4
346 11(+) 15.3 53.6
355 2 57.0 48.8
356 22 54.7 80.8
357 24 11.2 52.0
358 5 17.9 57.3
360 6 5.2 33.6
361 7 9.6 56.8
362 8 8.1 37.6
363 14 40.1 63.2
364 3 37.7 58.4
365 10 8.7 43.2
366 9 11.1 56.0
367 23 11.1 80.0
368 4 6.1 57.0
375 36 80.5 46.4
378 19 84.0 74.4
379 34 76.5 63.2
383 18 57.8 55.2
384 85 12.8 66.4
385 86 17.6 46.6
386 20 80.5 80.8
387 35 80.9 76.8
388 38 37.0 66.4
389 39 73.3 64.0
390 40 16.9 47.2
391 41 9.6 74.4
402 27 65.4 76.8
403 28 74.9 76.8
404 29 43.1 76.8
413 37 92.5 76.8
414 21 82.9 75.2
415 47 47.0 75.2
416 48 52.8 85.6
417 49 58.3 72.8
420 26 65.0 52.8
421 30 72.0 88.8
422 31 56.7 46.4
423 50 68.7 64.0
424 51 21.0 50.4
425 52 37.7 42.4
426 53 22.0 73.6
427 32 11.4 53.6
428 33 15.6 17.6
463 70 76.1 73.6
464 71 81.6 76.8
465 58 76.7 71.2
466 59 70.7 68.0
467 55 65.8 69.6
468 56 77.2 72.0
469 67 46.9 60.8
470 68 74.9 83.2
471 78 37.7 70.4
472 79 69.6 54.4
473 62 24.0 41.6
474 63 33.3 --
475 60 34.3 79.2
476 61 42.1 92.0
477 44 43.6 61.6
478 45 29.7 29.6
479 46 44.3 45.6
480 12 26.4 65.6
482 14 25.3 0
483 83 12.4 0
484 82 9.0 13.6
485 80 51.3 15.2
486 76 3.6 16.8
487 75 10.5 20.8
488 74 16.4 24.8
491 84 25.1 88.0
492 15 14.9 88.8
493 66 50.7 59.2
494 69 75.9 85.6
495 57 76.3 66.2
496 54 72.1 70.4
501 35.9 39.2
502 16 43.8 1.6
503 43 48.9 71.2
504 64 17.2 43.0
505 65 56.3 68.0
506 81 13.5 --
509 25 .[.106.4.]..Iadd.34.Iaddend.
--
510 16(+) .[.92.5.]..Iadd.42.Iaddend.
--
511 72 66.4 72.0
512 73 65.9 78.7
______________________________________
(+) = Noxide.
This invention relates therefore also to pharmaceutical compositions containing as active ingredient at least one compound of the formula I or V, or a N-oxide or such a compound or a base- or acid-addition salt thereof, together with a pharmaceutically acceptable vehicle or carrier.
The compounds of this invention may be administered in the form of dragees, tablets, capsules and suppositories at daily doses of 50 to 300 mg of active compound.
The following examples illustrate the preparation of compounds of formulae I and V.
3-sulfonamido-4-(3'-chloro)-phenylaminopyridine (0.02 mole) is reacted with n-butylisocyanate (0.025 mole) in the presence of 1 to 2 ml of triethylamine by heating at 85°-95° C. during 10 hours. The residue is taken up with alcohol (30 ml) and NaOH 2 N, acidified by means of acetic acid and then diluted with an excess of water which gives a precipitate. The mixture is treated with a 5% solution of sodium bicarbonate in a mixture (3:1) of water and alcohol during 1 hour, then filtered and acidified, whereby the desired product precipitates.
The same product is obtained by reacting in acetone a mixture of ethyl chloroformate (0.06 mole), 3-sulfonamido-4-(3'-chloro)-phenylaminopyridine (0.05 mole) and potassium carbonate (8.5 g), by reflux heating with stirring for 2 hours. The acetone is distilled off and the residue is poured into an excess of water which is acidified by means of hydrochloric acid. The product which appears is extracted with ether, the ether is dried and then distilled to give a residue which is dissolved in diethoxyethane or propylene glycol (10 ml), to which butyl-amine (0.02 mole) is added, the resulting mixture being reflux heated during 15 hours, diluted with 100 ml of water and acidified by means of acetic acid. After precipitation, the product is purified with sodium bicarbonate and recovered as described in part A of this example.
3-butylcarbamylsulfonamide-4-chloropyridine (0.01 mole) and metachloroaniline (0.0125 mole) and copper powder are mixed intimately and heated carefully until the temperature spontaneously rises. The resulting reaction mixture is cooled and the product is purified and isolated as in part A of this example.
Whenever prepared by one of the above described methods, the product is in the form of white crystals, m.p. 139°-140° C.
This product is prepared by the methods described in parts A and C of Example 1, using each time the appropriate starting materials. White crystals; m.p. 166°-168° C.
This product is prepared by the methods described in parts A and C or Example 1, using each time the appropriate starting materials. White crystals; m.p. 126°-128° C.
Using the method described in part A of Example 1, one obtains white crystals; m.p. 180°-182° C.
The following mixture:
0.01 mole of 3-sulfonamido-4-(N-methylanilino)-pyridine
10 ml of propionyl chloride or anhydride
10 ml of pyridine is reacted during 12 hours (fifth process).
The reacted mixture is poured into an excess of 10% NaOH, filtered whenever necessary and acidified by means of acetic acid which gives a precipitate. The precipitate is dissolved in 100 ml of 5% sodium bicarbonate in a mixture of water and alcohol (3:1). The mixture thus obtained is filtered and the filtrate is acidified to give the desired product as a yellowish white product, m.p. 247° C.
Fourth process--a mixture of 3-sulfonamido-4-chloropyridine (0.02 mole), sodium meta-chlorophenolate (0.04 mole) and meta-chlorophenol (0.02 mole) is heated and maintained at about 160°-180° C. during 1/2 hour. The mixture is taken up with 100 ml of alcohol, acidified by means of acetic acid and diluted with water. The desired product precipitates; m.p. 161°-163° C. (white crystals).
Fourth process--the following mixture is allowed to boil during 1 hour: 0.02 mole of 3-sulfonamido-4-chloropyridine and 0.03 mole of sodium metachlorothiophenolate. The mixture is diluted with an excess of water and acidified with acetic acid. The product crystallizes as white crystals; m.p. 150°-152° C.
3-sulfonamido-4-(3'-chloro)-thiophenoxypyridine (5 g) is contacted with pyridine (25 ml) and acetic anhydride (25 ml) during 3 hours. The reacted mixture is poured into an excess of 10% NaOH, filtered if necessary and acidified by means of acetic acid. The product is separated, purified by dissolution in 200 ml of 5% NaHCO3 in a mixture of water and alcohol (3:1) and again precipitated by means of acetic acid.
3-acetylsulfonamido-4-chloropyridine (0.01 mole) and sodium metachlorothiophenolate (0.01 mole) and absolute ethanol (100 ml) are reflux heated during 1 hour. After distillation of 50 ml of ethanol, the mixture is diluted with an excess of water, giving a precipitate which is purified and isolated as in part A of this example. White product; m.p. 229°-230° C.
A. The desired product is obtained from 3-sulfonamido-4-(3'-chloro)-thiophenoxypyridine as described in part A of Example 1.
B. The same product is also obtained by the fourth process using sodium metachlorothiophenolate and absolute ethanol as a diluent.
In both instances, one obtains a white product; m.p. 195°-197° C.
First process--3-sulfonamido-4-(3'-chloro)-phenoxypyridine (0.01 mole) is intimately mixed with propylisocyanate (0.0125 mole) and triethylamine (0.5-1 ml). The mixture thus obtained is maintained 4 hours at 85°-95° C., taken up with 50 ml of alcohol and a few ml of NaOH 2 N, heated to dissolve any soluble matter, acidified with acetic acid 300 ml of water are then added thereto. The product is purified and isolated as described previously, using a solution of NaHCO3 to give small white crystals; m.p. 177°-179° C.
A. 0.01 mole of 3-sulfonamido-4-(3-trifluoromethyl)-phenylaminopyridine, 0.030 mole of benzoyl chloride and 20 ml of anhydrous pyridine are left in contact with one another for 24 hours. The resulting mixture is poured into NaOH (10%). One obtains a precipitate of the cyclized second title product (m.p. 290° C.) and a solution. When neutralized by acetic acid, the solution gives a precipitate of impure first title compound. Said precipitate is stirred with an aqueous solution of NaHCO3 to extract the little amount of benzoic acid contained therein. It is then treated with a water-alcohol solution of NaHCO3, dissolved, the resulting solution is filtered and neutralized by means of acetic acid. The desired first title compound precipitates (m.p. 249° C.). By treatment with a dehydrating agent, such as acetic anhydride, the first title compound is converted into the second title compound.
B. A mixture of 0.01 mole of 4-chloro-3-benzoylsulfonamido-pyridine, 0.01 mole of meta-trifluoromethylaniline and a little amount of copper powder is heated at about 80° C. A spontaneous heating occurs. The mixture is maintained during 10 minutes at about 80°-100° C. and is then taken up with water and adjusted to a pH of 5. The precipitate is treated as described in part A of this example, using a water-alcoholic solution of sodium bicarbonate, filtered and neutralized by means of acetic acid. The first title compound crystallizes (m.p. 249° C.). By treatment of this compound using acetic anhydride, the first title compound cyclizes to form the second title compound (m.p. 290° C.).
In a mixture of equal parts of water and dioxane, 0.01 mole of sodium salt of 3-sulfonamido-4-(3'-chloro)-phenylaminopyridine is dissolved and 0.02 mole of allylisothiocyanate is added little by little.
The reaction mixture is maintained 1 hour at 50° C. under stirring, then diluted by 250 ml of water and acidified.
The crude product is purified by dissolution in a water-alcohol solution of NaHCO3 and back-precipitation by means of acetic acid; (m.p. 175°-177° C.).
0.01 mole of 3-allylthiocarbamylsulfonamido-4-(3'-chloro)-phenylaminopyridine is dissolved in 100 ml of water and 5 g of Na2 CO3. One adds 10 g of HgO and one heats and maintains the reaction mixture under reflux conditions until all the sulphur is removed as HgS. Said mixture is filtrated and its pH is adjusted to 4-5. The product precipitates. It is purified by dissolution in NaHCO3 and back precipitation (m.p. 161°-163° C.).
By reacting the appropriate products as described in any of examples 1A, B or C, one obtains the desired title compound.
When applying the process of Example 1C, the reactants are preferably heated to 120° C. in a closed reaction vessel. Alternatively, an intermediate solvent such as propyleneglycol is used (m.p. 193° C.).
This product is conveniently prepared by applying any of the processes described in Examples 1A and 1C with very good results; m.p. 208°-209° C.
4-chlorosulfonamidopyridine-N-oxide (m.p. 217°-219° C.) is first condensed with toluidine using the usual method. 0.01 mole of the 3-sulfonamido-4-(3'-methyl)-phenylaminopyridine-N-oxide thus obtained is reacted, in the form of its sodium salt, with 0.011 mole of isopropylisocyanate in 50 ml of a (1:1) water-dioxane mixture for 1 hour at about 40° C. The mixture is diluted with 250 ml of water and adjusted to pH 4-5. The crude product is purified by dissolution in a water-alcohol (3:1) solution of NaHCO3 and back precipitation by means of HOAC.
0.01 mole of 3-isopropylcarbamylsulfonamido-4(3'-methyl)-phenylaminopyridine is dissolved in 150 ml of CHCl3. 0.01 mole of metachloroperoxybenzoic acid is slowly added drop by drop under good stirring and the reaction is allowed to proceed for a few hours under cool conditions. CHCl3 is evaporated and the residue is taken up with ether. The insoluble matter, mainly consisting of the crude product, is purified by the usual NaHCO3 treatment; .[.(m.p. 158° C)..]. .Iadd.(m.p. 180°-181° C.).
This compound is obtained by any one of the methods described in Example 1. It is however preferred to apply the method of Example 1A using as starting materials ethyl isocyanate and 3-sulfonamido-4-(3'-chloro)-phenylamino-5-methylpyridine (m.p. 251° C.).
Applying any of the above-described methods, the following compounds listed in the table hereinafter are prepared. Unless otherwise specified, all these products are white crystals, sparingly soluble in water, more soluble in alcohol and acetone, soluble in the bases except the second title compound of Example 11, and concentrated inorganic acids.
______________________________________
Com-
pounds
of Ex.
Code N°
Name and melting point of compound
______________________________________
18 JDL 383 3-pripylcarbamylsulfonamido-4-N-
methyl-anilinopyridine (formula I :
Z = phenyl; R.sub.1 = Methylcarbamyl;
R.sub.2 = H and X = NcH.sub.3); m.p. 105-107° C.
19 JDL 378 3-methylcarbamylsulfonamido-4-(3'-trifluoromethyl)-phenylam
inopyridine - (formula I : 2 = trifluoro-
methylphenyl; R.sub.1 = methylcarbamyl;
R.sub.2 = H and X = NH); m.p. 189-191° C.
20 JDL 386 3-ethylcarbamylsulfonamido-4-(3'-
trifluoromethyl)-phenylaminopyrid-
line (formula I : Z = trifluoro-
thyphenyl; R.sub.1 = ethylcarbamyl;
R.sub.1 = H and X = NH); m.p. 164-165° C.
21 JDL 414 3-isopropylcarbamylsulfonamido-4-
(3'-trifluoromethyl)-phenylamino-
pyridine (formula I : Z = trifluoro-
methylphenyl; R.sub.1 = isopropylcarb-
amyl; R.sub.2 = H and X = NH); m.p. 177° C.
22 JDL 356 3-butylcarbamylsulfonamido-4-(3'-
trifluoromethyl)-phenylaminopyrid-
ine (formula I : Z = trifluorometh-
ylphenyl; R.sub.1 = butylcarbamyl;
R.sub.2 = H and X = NH); m.p. 150-152° C.
23 JDL 367 3-tertbutylcarbamylsulfonamido-4-
(3'-trifluoromethyl)-phenylamino-
pyridine (formula I : Z = trifluoro-
methylphenyl; R.sub.1 = t-butylcarbamyl;
R.sub.2 = H and X = NH); m.p. 168-170° C.
24 JDL 357 3-parachlorophenylcarbamylsulfon-
amido-4-(3'-trifluoromethyl)-
phenylaminopyridine (formula I :
Z = trifluoromethylphenyl; R.sub.1 =
para-chlorophenylcarbamyl; R.sub.2 = H
and X = NH); m.p. 208-210° C.
25 JDL 509 3-ethylcarbamylsulfonamido-4-(3'-
trifluoromethyl)-phenylaminopyrid-
ine-N-oxide (formula I : Z = tri-
fluoromethylphenyl; R.sub.1 = ethylcarb-
amyl; R.sub.2 = H and X = NH); m.p..[.163° C..]..Iad
d.123-125° C..Iaddend.
26 JDL 420 3-ethylthiocarbamylsulfonamido-4-
(3'trifluoromethyl)-phenylamino-
pyridine (formula I : Z = trifluoro-
methylphenyl; R.sub.1 = ethylthiocarba-
myl; R.sub.2 = H and X = NH); m.p. 178-
180° C.
27 JDL 402 3-methylcarbamylsulfonamidio-4-(2'-
chloro)-phenylaminopyridine (formu-
la I : Z = chlorophenyl; R.sub.1 = methyl-
carbamyl; R.sub.2 = H and X = NH); m.p.
192° C.
28 JDL 403 3-ethylcarbamylsulfonamido-4-(2'-
chloro)-phenylaminopyridine (formu-
la I : Z = chlorophenyl; R.sub.1 =
ethylcarbamyl; R.sub.1 = H and X = NH);
m.p. 176-178° C.
29 JDL 404 3-propylcarbamylsulfonamido-4-(2'-
chloro)-phenylaminopyridine (formu-
la I : Z = chlorophenyl; R.sub.1 =
propylcarbamyl; R.sub.2 = H and X = NH);
m.p. 151-152° C.
30 JDL 421 3-isopropylcarbamylsulfonamido-4-(2'-
chloro)-phenylaminopyridine (formu-
la I : Z = chlorophenyl; R.sub.1 = iso-
propylcarbamyl; R.sub.2 = H and X = NH);
m.p. 144° C.
31 JDL 422 3-butylcarbamylsulfonamido-4(2'-
chloro)-phenylaminopyridine (for-
mula I : Z = chlorophenyl; R.sub.1 =
t-butylcarbamyl; R.sub.2 = H and X = NH);
m.p. 116° C.
32 JDL 427 3-tertiobutylcarbamylsulfonamido-
4-(2'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl;
R.sub.1 = butylcarbamyl; R.sub.2 = H and
X = NH); m.p. 185° C.
33 JDL 428 3-cyclohexylcarbamylsulfonamido-4-
(2'-chloro)-phenylamionpyridine
(formula I : Z = chlorophenyl;
R.sub.1 = cyclohexylcarbamyl; R.sub.2 = H
and X = NH); m.p. 137° C.
34 JDL 379 3-methylcarbamylsulfonamido-4-(3'-
chloro)-phenylaminopyridine (formu-
la I : Z = chlorophenyl; R.sub.1 =
methylcarbamyl; R.sub.2 = H and X = NH);
m.p. 174-176° C.
35 JDL 387 3-ethylcarbamylsulfonamido-4-(3'-
chloro-phenylaminopyridine (for-
mula I : Z = chlorophenyl; R.sub.1 =
ethylcarbamyl; R.sub.2 = H and X = NH);
m.p. 163-165° C.
36 JDL 375 3-propylcarbamylsulfonamido-4-(3'-
chloro)-phenylaminopyridine (formu-
la I : Z = chlorophenyl; R.sub.1 =
propylcarbamyl; R.sub.2 = H and X = NH);
m.p. 176° C.
37 JDL 413 3-isopropylcarbamylsulfonamido-4-
(3'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl; R.sub.1
= isopropylcarbamyl; R.sub.2 = H and
X = NH); m.p. 179° C.
38 JDL 388 3-tertiobutylcarbamylsulfonamido-
4-(3'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl; R.sub.1
= t-butylcarbamyl; R.sub.2 = H; X = NH);
m.p. 172-173° C.
39 JDL 389 3-cyclohexylcarbamylsulfonamido-4-
(3'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl;
R.sub.1 = cyclohexylcarbamyl; R.sub.2 = H
and X = NH); m.p. 125° C.
40 JDL 390 3-phenylcarbamylsulfonamido-4-(3'-
.[.chloro)-phenylaminopyridine (formu-.]..Iadd.chloro)-phen
ylaminopyridine (formu-.Iaddend.
la I : Z = chlorophenyl; R.sub.1 = phe-
nylcarbamyl; R.sub.2 = H and X = NH);
m.p. 214° C.
41 JDL 391 3-parachlorophenylcarbamylsulfon-
amido-4-(3'-chloro)-phenylamino-
pyridine (formula I : Z = chloro-
phenyl; R.sub.1 = parachlorophenylcarb-
amyl; R.sub.2 = H and X = NH); m.p.
213-215° C.
42 JDL 501 3-methylcarbamylsulfonamido-4-(3'-
chloro)-phenylamino-5-methylpyrid-
ine (formula I : Z = chlorophenyl;
R.sub.1 = methylcarbamyl; R.sub.2 = CH.sub.2 and
X = NH); m.p. 189° C.
43 JDL 503 3-isopropylcarbamylsulfonamido-4-
(3'-chloro)-phenylamino-5-methyl-
pyridine (formula I : Z = chloro-
phenyl; R.sub.1 = isopropylcarbamyl-
R.sub.2 = CH.sub.3 and X = NH); m.p. 174° C.
44 JDL 477 3-methylthiocarbamylsulfonamido-4-
(3'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl; R.sub.1
= methylthiocarbamyl; R.sub.2 = H and
X = NH); m.p. 194-195° C.
45 JDL 478 3-ethylthiocarbamylsulfonamido-4-
(3'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl:
R.sub.1 = ethylthiocarbamyl; R.sub.2 = H
and X = NH); m.p. 195-196° C.
46 JDL 479 3-isopropylthiocarbamylsulfonamido-
4-(3'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl;
R.sub.1 = isopropylthiocarbamyl; R.sub.2 = H
and X = NH); m.p. 189-191° C.
47 JDL 415 3-methylcarbamylsulfonamido-4-(4'-
chloro)-phenylaminopyridine (formu-
la I : Z = chlorophenyl; R.sub.1 = meth-
ylcarbamyl; R.sub.2 = H and X = NH);
m.p. 180° C.
48 JDL 416 3-ethylcarbamylsulfonamido-4-(4'-
chloro)-phenylaminopyridine (formu-
la I : Z = chlorophenyl; R.sub.1 =
ethylcarbamyl; R.sub.2 = H and X = NH);
m.p. 201° C.
49 JDL 417 3-propylcarbamylsulfonamido-4-(4'-
chloro)-phenylaminopyridine (for-
mula I : Z = chlorophenyl; R.sub.1 =
propylcarbamyl; R.sub.2 = H and X =
NH); m.p. 168-170° C.
50 JDL 423 3-isopropylcarbamylsulfonamido-4-
(4'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl;
R.sub.1 = isopropylcarbamyl; R.sub.2 = H
and X = NH); m.p. 143° C.
51 JDL 424 3-butylcarbamylsulfonamido-4-(4'-
chloro)-phenylaminopyridine (for-
mula I : Z = chlorophenyl; R.sub.1 =
butylcarbamyl; R.sub.2 = H and X = NH);
m.p. 170-172° C.
52 JDL 425 3-tertiobutylcarbamylsulfonamido-4-
(4'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl;
R.sub.1 = t-butylcarbamyl; R.sub.2 = H and
X = NH); m.p. 118° C.
53 JDL 426 3-cyclohexylcarbamylsulfonamido-4-
(4'-chloro)-phenylaminopyridine
(formula I : Z = chlorophenyl;
R.sub.1 = cyclohexylcarbamyl; R.sub.2 = H
and X = NH); m.p. 178° C.
54 JDL 496 3-methylcarbamylsulfonamido-4-(3'-
bromo)-phenylaminopyridine (formu-
la I : Z = bromophenyl; r.sub.1 = meth-
ylcarbamyl; R.sub.2 = H and X = NH);
m.p. 187° C.
55 JDL 467 3-ethylcarbamylsulfonamido-4-(3'-
bromo)-phenylaminopyridine (formu-
la I : Z = bromophenyl; R.sub.1 = ethyl-
carbamyl; R.sub.2 = H and X = NH);
m.p. 165-167° C.
56 JDL 468 3-isopropylcarbamylsulfonamido-4-
(3'-bromo)-phenylaminopyridine
(formula I : Z = bromophenyl;
R.sub.1 = isopropylcarbamyl; R.sub.2 = H
and X = NH); m.p. 157-159° C.
57 JDL 495 3-methylcarbamylsulfonamido-4-(3'-
fluoro)-phenylaminopyridine (formu-
la I : Z = fluorophenyl; R.sub.1 =
methylcarbamyl; R.sub.1 = H and X = NH);
m.p. 170-172° C.
58 JDL 465 3-ethylcarbamylsulfonamido-4-(3'-
fluoro)-phenylaminopyridine (formu-
la I : Z = fluorophenyl; R.sub.1 = eth-
ylcarbamyl; R.sub.2 = H and X = NH);
m.p. 158-160° C.
59 JDL 466 3-isopropylcarbamylsulfonamido-4-
(3'-fluoro)-phenylaminopyridine
(formula I : Z = fluorophenyl;
R.sub.1 = isopropylcarbamyl; R.sub.2 = H
and X = NH); m.p. 163-165° C.
60 JDL 475 3-ethylcarbamylsulfonamido-4-(3',4'-
dichloro)-phenylaminopyridine (for-
mula I : Z = dichlorophenyl; R.sub.1 =
ethylcarbamyl; R.sub.2 = H and X = NH);
m.p. 166-168° C.
61 JDL 476 3-isopropylcarbamylsulfonamido-4-
(3',4'-dichloro)-phenylaminopyrid-
ine (formula I : Z = dichlorophenyl;
R.sub.1 = isopropylcarbamyl; R.sub.2 = H and
X = NH); m.p. 123-125° C.
62 JDL 473 3-ethylcarbamylsulfonamido-4-(3',5'-
dichloro)-phenylaminopyridine (for-
mula I : Z = dichlorophenyl; R.sub.1 =
ethylcarbamyl; R.sub.2 = H and X = NH);
m.p. 165-167° C.
63 JDL 474 3-isopropylcarbamylsulfonamido-4-
(3',5'-dichloro)-phenylaminopyridine
(formula I : Z = dichlorophenyl;
R.sub.1 = isopropylcarbamyl; R.sub.2 = H and
X = NH); m.p. 124-126° C.
64 JDL 504 3-methylcarbamylsulfonamido-4-(3'-
nitro)-phenylaminopyridine (formu-
la I : Z = nitrophenyl; R.sub.1 = meth-
ylcarbamyl; R.sub.2 = H and X = NH);
m.p. 173° C. (yellow product)
65 JDL 505 3-isopropylcarbamylsulfonamido-4-
(3'-nitro)-phenylaminopyridine (for-
mula I : Z = nitrophenyl; I : 1 = iso-
propylcarbamyl; R.sub.2 = H and X = NH);
m.p. 166° C. (yellow product)
66 JDL 493 3-methylcarbamylsulfonamido-4-(3'-
methoxy)-phenylaminopyridine (formu-
la I : Z = methoxyphenyl; R.sub.1 =
methylcarbamyl; R.sub.2 = H and X =
NH); m.p. 177° C.
67 JDL 469 3-ethylcarbamylsulfonamido-4-(3'-
methoxy)-phenylaminopyridine (for-
mula I : Z = methoxyphenyl; R.sub.1 =
ethylcarbamyl; R.sub.2 = H and X = NH);
m.p. 99-101° C.
68 JDL 470 3-isopropylcarbamylsulfonamido-4-
(3'-methoxy)-phenylaminopyridine
(formula I : Z = methoxyphenyl;
R.sub.1 = isopropylcarbamyl; R.sub.2 = H
and X = NH); m.p. 144-146° C.
69 JDL 494 3-methylcarbamylsulfonamido-4-(3'-
methyl)-phenylaminopyridine (for-
mula I : Z = methylphenyl; R.sub.1 =
methylcarbamyl; R.sub.2 = H and X = NH);
m.p. 174° C.
70 JDL 463 3-ethylcarbamylsulfonamido-4-(3'-
methyl)-phenylaminopyridine (for-
mula I : Z = methylphenyl; R.sub.1 =
ethylcarbamyl; R.sub.2 = H and X = NH);
m.p. 151-153° C.
71 JDL 464 3-isopropylcarbamylsulfonamido-4-
(3'-methyl)-phenylaminopyridine
(formula I : Z = methylphenyl;
R.sub.1 = isopropylcarbamyl; R.sub.2 =
and X = NH); m.p. 163-164° C.
72 JDL 511 3-ethylcarbamylsulfonamido-4-(3'-
ethyl)-phenylaminopyridine (formula
I : Z = ethylphenyl; R.sub.1 = ethyl-
carbamyl; R.sub.2 = H and X = NH);
m.p. 165° C.
73 JDL 512 3-isopropylcarbamylsulfonamido-4-
(3'-ethyl)-phenylaminopyridine
(formula I : Z = ethylphenyl; R.sub.1
= isopropylcarbamyl; R.sub.2 = H and
X = NH); m.p. 145° C.
74 JDL 488 3-ethylcarbamylsulfonamido-4-(3'-
trifluoromethyl-4'-chloro)-phenyl-
aminopyridine (formula I : Z = tri-
fluoromethyl-chlorophenyl; R.sub.1 =
ethylcarbamyl; R.sub.2 = H and X = NH);
m.p. 172° C.
75 JDL 487 3-isopropylcarbamylsulfonamido-4-
(3'-trifluoromethyl-4'-chloro)-
phenylaminopyridine (formula I :
Z = trifluoromethyl-chlorophenyl;
R.sub.1 = isopropylcarbamyl; R.sub.2 = H
and X = NH); m.p. 178° C.
76 JDL 486 3-butylcarbamylsulfonamido-4-(3'-
trifluoromethyl-4'-chloro)-phenyl
aminopyridine (formula I : Z =
trifluoromethyl-chlorophenyl;
R.sub.1 = butylcarbamyl; R.sub.2 = H and
X = NH); m.p. 128° C.
77 JDL 181 3-sulfonamido-4-methylfurylamino-
pyridine (formula I : Z = methyl-
propyl; R.sub.1 = H; R.sub.2 = H and X =
NH); m.p. 160-162° C.
78 JDL 471 3-ethylcarbamylsulfonamido-4-meth-
ylfurylaminopyridine (formula I :
Z = methylfuryl; R.sub.2 = ethylcarb-
amyl; R.sub.2 = H and X = NH); m.p.
183-184° C.
79 JDL 472 3-isopropylcarbamylsulfonamido-4-
methylfurylaminopyridine (formula
I : Z = methylfuryl; R.sub.1 = isoprop-
ylcarbamyl; R.sub.2 = H and X = NH);
m.p. 147-148° C.
80 JDL 485 3-butylcarbamylsufonamido-4-methyl-
furylaminopyridine (formula I : Z =
methylfuryl; R.sub.1 = butylcarbamyl;
R.sub.2 = H and X = NH); m.p. 159° C.
81 JDL 506 3-methylcarbamylsulfonamido-4-(3'-
pyridylamino)-pyridine (formula I : - Z = pyridyl;
R.sub.1 = methylcarbamyl;
R.sub.2 = H and X = NH); m.p. 249° C.
82 JDL 484 3-sulfonamido-4-diethylaminopyrid-
ine (formula I : Z = ethyl; R.sub.1 =
H; R.sub.2 = H and X = NC.sub.2 H.sub.5); m.p. 171°
C.
83 JDL 483 3-isopropylcarbamylsulfonamido-4-
diethylaminopyridine (formula I : - Z = ethyl; R.sub.1 =
isopropylcarbamyl;
R.sub.2 = H and X = NC.sub.2 H.sub.5); m.p. 102°
C.
84 JDL 491 3-butylcarbamylsulfonamido-4-iso-
propylaminopyridine (formula I : - Z = isopropyl;
R.sub.1 = butylcarbamyl;
R.sub.2 = H and X = NH); m.p. 161° C.
85 JDL 384 3-propylcarbamylsulfonamido-4-(3'-
chloro)-thiophenoxypyridine (formu-
la I : Z = chlorophenyl; R.sub.1 =
propylcarbamyl; R.sub.2 = H and X = S);
m.p. 174-176° C.
86 JDL 385 3-tertiobutylcarbamylsulfonamido-
4-(3'-chloro)-thiophenoxypyridine
(formula I : Z = chlorophenyl; R.sub.1
= t-butylcarbamyl; R.sub.2 = H and X =
S); m.p. 128° C.
87 JDL 528 3-sulfonamido-4-metatrifluorometh-
yl-thiophenoxypyridine (formula I :
Z = metatrifluoromethylphenyl;
R.sub.1 = H; R.sub.2 = H and X = S); m.p.
165° C.
88 JDL 529 3-butylcarbamylsulfonamido-4-meta-
trifluoromethylthiophenoxypyridine
(formula I : Z = metatrifluorometh-
ylphenyl; R.sub.1 = butylcarbamyl; R.sub.2
= H and X = S); m.p. 167-168° C.
89 JDL 530 3-cyclohexylcarbamylsulfonamido-4-
metatrifluoromethylthiophenoxypyr-
idine (formula I : Z = metatri-
fluoromethylphenyl; R.sub.1 = cyclo-
hexylcarbamyl; R.sub.2 = H and X = S);
m.p. 183-185° C.
90 JDL 531 3-p-chlorobenzoylsulfonamido-4-
metatrifluoromethylthiophenoxy-
pyridine (formula I : Z = metatri-
fluoromethylphenyl; R.sub.1 = p-chloro-
benzoyl; R.sub.2 = H and X = S); m.p.
203-205° C.
91 JDL 532 3-propionylsulfonamido-4-metatri-
fluoromethylthiophenoxypyridine
(formula I : Z = metatrifluoro-
methylphenyl; R.sub.1 = propionyl;
R.sub.2 = H and X = S); m.p. 169-171° C.
92 L 2539 3-sulfonamido-4-(2-amino)-thio-
phenoxypyridine hydrochloride
(formula I : Z = aminophenyl; R.sub.1
= H; R.sub.2 = H and X = S); m.p.
238-240° C.
______________________________________
Claims (7)
1. A compound of the following formula: ##STR10## in which
X represents an amino or C1 -C4 -alkylamino group;
R1 represents a group of the formula:
R.sub.3 NHCA (II),
where A represents oxygen or sulfur and R3 represents a C1 -C4 -alkyl, allyl, cyclohexyl, unsubstituted phenyl group or a phenyl group substituted by chloro, or a group of the formula R4 CO(III), wherein R4 represents an unsubstituted phenyl group or a phenyl group substituted by chloro; R2 represents hydrogen or a C1 -C4 -alkyl group, and Z represents a C1 -C4 -alkyl, methylfuryl, pyridyl or unsubstituted phenyl group, or a phenyl group substituted by one or two halogen atoms or by a C1 -C4 -alkyl, alkoxy, trifluoromethyl or nitro group, or by a trifluoromethyl group and a halogen atom with the provisos that:
1. when X represents an amino group, Z, R1, R2, R3 and R4 have all the above indicated meanings;
2. when X represents an alkylamino group, Z may only represent a C1 -C4 -alkyl group or a phenyl group as defined hereabove and R1 may further represent a group of the formula:
R.sub.5 CO (IV)
in which R5 represents hydrogen or a C1 -C4 -alkyl group;
3. when X represents an amino group and Z is other than a phenyl group, R1 may further represent hydrogen or a group of the formula (IV) as above defined,
as well as a pyridine N-oxide of the compound of formula I and the pharmaceutically acceptable base and acid addition salts of said compounds..]. .[.2. 3-Ethylcarbamylsulfonamido-4-(3'-trifluoromethyl)-phenylaminopyridine-N-oxide..]. .[.3. 3-Isopropylcarbamylsulfonamido
4-(3'-methyl)-phenylaminopyridine-N-oxide..]. 4. 3-Methylcarbamylsulfonamido-4-(3'-trifluoromethyl)-phenylaminopyridine.
. 3-Ethylcarbamylsulfonamido-4-(3'-trifluoromethyl)-phenylaminopyridine.
3-Isopropylcarbamylsulfonamido-4-(3'-chloro)-phenylaminopyridine.
7. 3-Methylcarbamylsulfonamido-4-(3'-methyl)-phenylaminopyridine. 8. A pharmaceutical composition .[.containing an anti-inflammatory, or.]. .Iadd.comprising a .Iaddend.diuretic effective amount of a compound of claim 9 .[.and.]. .Iadd.together with .Iaddend.a pharmaceutical carrier.[.or vehicle.].. .Iadd.9. A compound of the formula: ##STR11## in which: R represents a hydrogen atom or a C1 -C4 alkyl group;
R2 represents a hydrogen atom or a C1 -C4 -alkyl group;
R3 represents a C1 -C4 -alkyl, allyl, cyclohexyl, unsubstituted phenyl group or a phenyl group substituted by chloro;
A represents oxygen or sulfur; and
Z represents a C1 -C4 -alkyl, methylfuryl, pyridyl or unsubstituted phenyl group or a phenyl group substituted by one or two halogen atoms or by a C1 -C4 -alkyl, alkoxy, trifluoromethyl or nitro group or by a trifluoromethyl group and a halogen atom;
with the proviso that when R represents a C1 -C4 alkyl group, Z may only represent a C1 -C4 alkyl or a phenyl group as defined hereabove,
and the pharmaceutically acceptable base addition salts or acid addition
salts of said compounds. .Iaddend. .Iadd.10. A compound according to claim 9, in which:
R represents hydrogen,
R3 represents a C1 -C4 -alkyl group,
A represents oxygen, and
Z represents a C1 -C4 -alkyl group or a phenyl group as defined in claim 9. .Iaddend. .Iadd.11. 3-Isopropylcarbamylsulfonamido-4-(3'-methyl)phenyl-aminopyridine. .Iaddend. .Iadd.12. A pharmaceutical composition comprising a diuretic effective amount of the compound of claim 3 together with a pharmaceutical carrier. .Iaddend.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB16836/74 | 1974-04-17 | ||
| GB1683674A GB1477664A (en) | 1974-04-17 | 1974-04-17 | Pyridine derivatives |
| YU1507/81A YU42409B (en) | 1974-04-17 | 1981-06-15 | Process for obtaining new pyridine derivatives |
Related Parent Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/568,759 Reissue US4018929A (en) | 1974-04-17 | 1975-04-16 | 3-Loweralkylcarbamylsulfonamido-4-phenylaminopyridine-N-oxides, derivatives thereof and pharmaceutical compositions containing same |
| US06031101 Continuation | 1979-04-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| USRE30633E true USRE30633E (en) | 1981-06-02 |
Family
ID=26252269
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/568,759 Expired - Lifetime US4018929A (en) | 1974-04-17 | 1975-04-16 | 3-Loweralkylcarbamylsulfonamido-4-phenylaminopyridine-N-oxides, derivatives thereof and pharmaceutical compositions containing same |
| US06/119,601 Expired - Lifetime USRE30633E (en) | 1974-04-17 | 1980-02-07 | 3-Lower alkylcarbamylsulfonamido-4-phenylaminopyridines, n-oxides, derivatives thereof and pharmaceutical compositions containing same |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/568,759 Expired - Lifetime US4018929A (en) | 1974-04-17 | 1975-04-16 | 3-Loweralkylcarbamylsulfonamido-4-phenylaminopyridine-N-oxides, derivatives thereof and pharmaceutical compositions containing same |
Country Status (19)
| Country | Link |
|---|---|
| US (2) | US4018929A (en) |
| JP (1) | JPS5951536B2 (en) |
| AR (4) | AR211097A1 (en) |
| AT (1) | AT344170B (en) |
| BE (1) | BE827844A (en) |
| CA (1) | CA1070313A (en) |
| CH (3) | CH612424A5 (en) |
| DD (2) | DD121936A5 (en) |
| DE (1) | DE2516025A1 (en) |
| ES (4) | ES436581A1 (en) |
| FR (1) | FR2267775B1 (en) |
| GB (1) | GB1477664A (en) |
| HU (1) | HU171420B (en) |
| IL (1) | IL47084A (en) |
| LU (2) | LU72284A1 (en) |
| NL (2) | NL183580C (en) |
| SE (2) | SE424320B (en) |
| YU (1) | YU42409B (en) |
| ZA (1) | ZA752243B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4822807A (en) | 1985-08-17 | 1989-04-18 | Boehringer Mannheim Gmbh | Pharmaceutical composition containing a stable modification of torasemide |
| US5166162A (en) * | 1990-03-02 | 1992-11-24 | Adir Et Compagnie | Pyridylsulfonylurea and pyridylsulfonylthiourea compounds |
| WO2001010441A1 (en) * | 1999-08-11 | 2001-02-15 | Teva Pharmaceutical Industries Ltd. | Torsemide polymorphs |
| US6399637B1 (en) * | 1998-02-10 | 2002-06-04 | Pliva, Farmaceutska, Kemijska, Prehrambena I Kozmeticka Industrija, Dionicko Drustvo | Crystal modification of torasemide |
| WO2002067935A1 (en) * | 2000-02-17 | 2002-09-06 | Teva Pharmaceutical Industries Ltd. | A stable pharmaceutical formulation comprising torsemide modification ii |
| US20030022921A1 (en) * | 2001-02-21 | 2003-01-30 | Minutza Leibovici | Stable pharmaceutical formulation comprising torsemide modification II |
| US6635765B2 (en) | 2000-03-20 | 2003-10-21 | Teva Pharmaceutical Industries, Ltd. | Processes for preparing torsemide intermediate |
| US20040138469A1 (en) * | 2002-12-23 | 2004-07-15 | Cosma S.P.A. | Process for the synthesis of torsemide, in particular of pure and stable form II |
| US20050209460A1 (en) * | 2004-03-16 | 2005-09-22 | Brantford Chemicals Inc. | Process for the preparation of torsemide and related intermediates |
| US7002018B2 (en) | 2001-08-03 | 2006-02-21 | Ranbaxy Laboratories Limited | Process for the preparation of amorphous form of torsemide |
| US7241782B1 (en) | 2000-05-19 | 2007-07-10 | Pliva, Farmaceutska Industrija, Dionicko Drustvo | Polymorph V of torasemide |
Families Citing this family (34)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1593609A (en) * | 1978-01-31 | 1981-07-22 | Christiaens Sa A | Pyridine sulfonamides |
| US4776878A (en) * | 1978-12-04 | 1988-10-11 | E. I. Du Pont De Nemours And Company | Agricultural pyridinesulfonamides |
| LU85193A1 (en) * | 1984-01-31 | 1985-09-12 | Christiaens Sa A | NOVEL 4-PHENYLAMINOPYRIDINE DERIVATIVES, THEIR USE AND THEIR PREPARATION |
| US4914203A (en) * | 1987-07-24 | 1990-04-03 | American Home Products Corporation | 5 step process for preparing certain 2,4-diamino-5-pyrimidine-sulfonyl ureas |
| US4853389A (en) * | 1987-07-24 | 1989-08-01 | American Home Products Corporation | Diuretic and antihypertensive substituted-5-pyrimidinesulfonylureas |
| FR2659080B1 (en) * | 1990-03-02 | 1994-07-08 | Adir | NOVEL PYRIDYLSULFONYLUREA AND PYRIDYLSULFONYLTHIOURAE DERIVATIVES, THEIR PREPARATION PROCESS AND THE PHARMACEUTICAL COMPOSITIONS CONTAINING THEM. |
| US5486530A (en) * | 1991-04-27 | 1996-01-23 | Boehringer Mannheim Gmbh | Use of torasemide for the treatment of brain oedemas |
| IT1288123B1 (en) * | 1996-09-04 | 1998-09-10 | Nicox Sa | USE OF NITRO-DERIVATIVES FOR URINARY INCONTINENCE |
| US6166045A (en) * | 1998-06-02 | 2000-12-26 | Roche Diagnostics Gmbh | Torasemide of modification III |
| US8008283B2 (en) * | 1998-12-23 | 2011-08-30 | Neurotherapeutics Pharma, Inc. | Methods and compositions for the treatment of neuropsychiatric disorders |
| US7214711B2 (en) * | 1998-12-23 | 2007-05-08 | Neurotherapeutics Pharma Llc | Method of treating migraine headache without aura |
| US8722668B2 (en) * | 1998-12-23 | 2014-05-13 | Daryl W. Hochman | Methods and compositions for the treatment of neuropathic pain and neuropsychiatric disorders |
| HRP20000162B1 (en) * | 2000-03-20 | 2004-06-30 | Pliva D D | Amorphous torasemide modification |
| EP1741429A3 (en) * | 2000-03-20 | 2007-01-17 | Teva Pharmaceutical Industries Ltd. | Processes for preparing torsemide |
| IL149771A0 (en) * | 2002-05-21 | 2002-11-10 | Fintech Lab Ltd | Process for preparation of torsemide |
| HRP20020603B1 (en) * | 2002-07-19 | 2008-11-30 | Pliva D.D. | New process for the preparation of modification i n-(1-methylethylaminocarbonyl)-4-(3-methylphenylamino)-3-pyridinesulfonamide |
| AP2005003232A0 (en) | 2002-08-19 | 2005-03-31 | Pfizer Prod Inc | Combination therapy for hyperproliferative diseases. |
| CA2401546C (en) * | 2002-09-06 | 2006-09-19 | Brantford Chemicals Inc. | Preparation of derivatives of 3-sulfonamido-4-phenylaminopyridine |
| US20050037063A1 (en) * | 2003-07-21 | 2005-02-17 | Bolton Anthony E. | Combined therapies |
| US20050215600A1 (en) * | 2003-10-27 | 2005-09-29 | Arie Gutman | Polymorphs of torsemide hydrochloride and process for production thereof |
| WO2007047447A2 (en) * | 2005-10-17 | 2007-04-26 | Neurotherapeutics Pharma, Inc. | Diuretic-like compound analogs useful for regulation of central nervous system disorders |
| US7741317B2 (en) | 2005-10-21 | 2010-06-22 | Bristol-Myers Squibb Company | LXR modulators |
| US7888376B2 (en) | 2005-11-23 | 2011-02-15 | Bristol-Myers Squibb Company | Heterocyclic CETP inhibitors |
| US7625896B2 (en) * | 2005-11-25 | 2009-12-01 | Hoffman-La Roche Inc. | Pyridylsulfonamide derivatives |
| US7939532B2 (en) * | 2006-10-26 | 2011-05-10 | Hoffmann-La Roche Inc. | Heterocyclyl pyridyl sulfonamide derivatives, their manufacture and use as pharmaceutical agents |
| ES2382009T3 (en) | 2006-12-01 | 2012-06-04 | Bristol-Myers Squibb Company | N - ((3-Benzyl) -2,2- (bis-phenyl -) - propan-1-amine derivatives as CETP inhibitors for the treatment of atherosclerosis and cardiovascular diseases |
| US7879884B2 (en) * | 2007-05-16 | 2011-02-01 | Hoffmann-La Roche Inc. | Aryl pyridyl sulfonamide derivatives, their manufacture and use as pharmaceutical agents |
| NL2006622C2 (en) | 2011-04-18 | 2012-10-22 | Eurovet Animal Health B V | Use of a composition comprising torasemide. |
| EP2887806B1 (en) | 2012-07-20 | 2019-11-13 | University Of Rochester | Method of treating and preventing brain impairment using na+-k+ -2ci- cotransporter isoform 1 inhibitors |
| CN105143203A (en) | 2013-04-17 | 2015-12-09 | 辉瑞大药厂 | N-piperidin-3-ylbenzamide derivatives for treating cardiovascular diseases |
| WO2016055901A1 (en) | 2014-10-08 | 2016-04-14 | Pfizer Inc. | Substituted amide compounds |
| MD3259253T2 (en) * | 2015-02-16 | 2020-06-30 | Univ Queensland | Sulfonylureas and related compounds and use of same |
| ES2906280T3 (en) | 2017-07-07 | 2022-04-18 | Inflazome Ltd | Novel Carboxamide Sulfonamide Compounds |
| WO2020150473A2 (en) | 2019-01-18 | 2020-07-23 | Dogma Therapeutics, Inc. | Pcsk9 inhibitors and methods of use thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3674794A (en) * | 1970-03-18 | 1972-07-04 | Ciba Geigy Corp | Certain-3-pyridine-sulfonamide derivatives |
| US3819639A (en) * | 1970-11-11 | 1974-06-25 | Christiaens Sa A | 2-metatrifluoromethylanilino-pyridine-5-n-acetyl sulfonamide |
| US3904636A (en) * | 1971-11-09 | 1975-09-09 | Christiaens Sa A | 3-sulfonamido-4-phenyl aminopyridines and derivatives |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1414793A (en) * | 1972-07-28 | 1975-11-19 | Manuf Prod Pharma | Derivatives of phenylaminopyridine |
-
1974
- 1974-04-17 GB GB1683674A patent/GB1477664A/en not_active Expired
-
1975
- 1975-04-08 ZA ZA00752243A patent/ZA752243B/en unknown
- 1975-04-11 BE BE155330A patent/BE827844A/en not_active IP Right Cessation
- 1975-04-12 DE DE19752516025 patent/DE2516025A1/en active Granted
- 1975-04-14 ES ES436581A patent/ES436581A1/en not_active Expired
- 1975-04-14 HU HU75CI00001569A patent/HU171420B/en unknown
- 1975-04-14 IL IL47084A patent/IL47084A/en unknown
- 1975-04-15 LU LU72284A patent/LU72284A1/xx unknown
- 1975-04-16 NL NLAANVRAGE7504521,A patent/NL183580C/en active Protection Beyond IP Right Term
- 1975-04-16 FR FR7511791A patent/FR2267775B1/fr not_active Expired
- 1975-04-16 CA CA224,805A patent/CA1070313A/en not_active Expired
- 1975-04-16 CH CH216478A patent/CH612424A5/xx not_active IP Right Cessation
- 1975-04-16 SE SE7504409A patent/SE424320B/en unknown
- 1975-04-16 CH CH485775A patent/CH609045A5/xx active Protection Beyond IP Right Term
- 1975-04-16 CH CH216378A patent/CH610890A5/xx active Protection Beyond IP Right Term
- 1975-04-16 US US05/568,759 patent/US4018929A/en not_active Expired - Lifetime
- 1975-04-16 AT AT288275A patent/AT344170B/en not_active IP Right Cessation
- 1975-04-17 AR AR258409A patent/AR211097A1/en active
- 1975-04-17 JP JP50047371A patent/JPS5951536B2/en not_active Expired
- 1975-04-17 DD DD185508A patent/DD121936A5/xx unknown
- 1975-04-17 DD DD194800A patent/DD126887A5/xx unknown
-
1976
- 1976-03-19 AR AR262625A patent/AR208768A1/en active
- 1976-03-19 AR AR262626A patent/AR208769A1/en active
- 1976-03-19 AR AR262627A patent/AR208770A1/en active
- 1976-11-15 ES ES453329A patent/ES453329A1/en not_active Expired
- 1976-11-15 ES ES453328A patent/ES453328A1/en not_active Expired
- 1976-11-15 ES ES453327A patent/ES453327A1/en not_active Expired
-
1979
- 1979-09-13 SE SE7907618A patent/SE7907618L/en not_active Application Discontinuation
-
1980
- 1980-02-07 US US06/119,601 patent/USRE30633E/en not_active Expired - Lifetime
-
1981
- 1981-06-15 YU YU1507/81A patent/YU42409B/en unknown
-
1993
- 1993-06-30 LU LU88346C patent/LU88346I2/en unknown
-
1994
- 1994-07-27 NL NL940014C patent/NL940014I2/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3674794A (en) * | 1970-03-18 | 1972-07-04 | Ciba Geigy Corp | Certain-3-pyridine-sulfonamide derivatives |
| US3819639A (en) * | 1970-11-11 | 1974-06-25 | Christiaens Sa A | 2-metatrifluoromethylanilino-pyridine-5-n-acetyl sulfonamide |
| US3904636A (en) * | 1971-11-09 | 1975-09-09 | Christiaens Sa A | 3-sulfonamido-4-phenyl aminopyridines and derivatives |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE34672E (en) * | 1985-08-17 | 1994-07-26 | Boehringer Mannheim Gmbh | Pharmaceutical composition containing a stable modification of torasemide |
| US4822807A (en) | 1985-08-17 | 1989-04-18 | Boehringer Mannheim Gmbh | Pharmaceutical composition containing a stable modification of torasemide |
| US5166162A (en) * | 1990-03-02 | 1992-11-24 | Adir Et Compagnie | Pyridylsulfonylurea and pyridylsulfonylthiourea compounds |
| US6399637B1 (en) * | 1998-02-10 | 2002-06-04 | Pliva, Farmaceutska, Kemijska, Prehrambena I Kozmeticka Industrija, Dionicko Drustvo | Crystal modification of torasemide |
| US20040229919A1 (en) * | 1998-10-02 | 2004-11-18 | Pliva Hrvatska D.O.O. | Crystal modification of torasemide |
| US20060205951A1 (en) * | 1998-10-02 | 2006-09-14 | Pliva Hrvatska D.O.O. | New crystal modification of torasemide |
| US6833379B2 (en) | 1998-10-02 | 2004-12-21 | Pliva Hrvatska D.O.O. | Crystal modification of torasemide |
| WO2001010441A1 (en) * | 1999-08-11 | 2001-02-15 | Teva Pharmaceutical Industries Ltd. | Torsemide polymorphs |
| US6465496B1 (en) | 1999-08-11 | 2002-10-15 | Teva Pharmaceutical Industries, Ltd. | Torsemide polymorphs |
| WO2002067935A1 (en) * | 2000-02-17 | 2002-09-06 | Teva Pharmaceutical Industries Ltd. | A stable pharmaceutical formulation comprising torsemide modification ii |
| US6482417B2 (en) | 2000-02-17 | 2002-11-19 | Teva Pharmaceutical Industries Ltd. | Stable pharmaceutical formulation comprising torsemide modification II |
| US6670478B2 (en) | 2000-03-20 | 2003-12-30 | Teva Pharmaceutical Industries, Ltd. | Process for preparing torsemide intermediate |
| US6635765B2 (en) | 2000-03-20 | 2003-10-21 | Teva Pharmaceutical Industries, Ltd. | Processes for preparing torsemide intermediate |
| US7241782B1 (en) | 2000-05-19 | 2007-07-10 | Pliva, Farmaceutska Industrija, Dionicko Drustvo | Polymorph V of torasemide |
| US20070238759A1 (en) * | 2000-05-19 | 2007-10-11 | Pliva Farmaceutska Industrija, Dionicko Drustvo | Novel Polymorph V of Torasemide |
| US20030022921A1 (en) * | 2001-02-21 | 2003-01-30 | Minutza Leibovici | Stable pharmaceutical formulation comprising torsemide modification II |
| US7002018B2 (en) | 2001-08-03 | 2006-02-21 | Ranbaxy Laboratories Limited | Process for the preparation of amorphous form of torsemide |
| US20040138469A1 (en) * | 2002-12-23 | 2004-07-15 | Cosma S.P.A. | Process for the synthesis of torsemide, in particular of pure and stable form II |
| US20050209460A1 (en) * | 2004-03-16 | 2005-09-22 | Brantford Chemicals Inc. | Process for the preparation of torsemide and related intermediates |
| US7378527B2 (en) | 2004-03-16 | 2008-05-27 | Daqing Che | Process for the preparation of torsemide and related intermediates |
Also Published As
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USRE30633E (en) | 3-Lower alkylcarbamylsulfonamido-4-phenylaminopyridines, n-oxides, derivatives thereof and pharmaceutical compositions containing same | |
| Yale et al. | 2-Amino-5-substituted 1, 3, 4-oxadiazoles and 5-imino-2-substituted Δ2-1, 3, 4-oxadiazolines. A group of novel muscle relaxants | |
| US5587383A (en) | Imidazopyridine derivatives and their use | |
| DD201589A5 (en) | PROCESS FOR THE PREPARATION OF AMINOTHIADIAZOLENE | |
| US4569938A (en) | Diuretic, antihypertensive and antihistaminic 7-carboxymethoxy-furo-(3,4-c)-pyridine derivatives | |
| SU999972A3 (en) | Process for producing derivatives of pyrido-(1,2a)-pyrimidine or their pharmaceutically acceptable salts or their optically active isomers | |
| CA1168232A (en) | Isoquinoline derivatives, a process for their preparation, pharmaceutical formulations containing them and their use | |
| NZ206614A (en) | Dihydropyridine derivatives and pharmaceutical compositions | |
| FI63573C (en) | FREEZING FOR OXIBENSOTIAZINE DIOXIDERS CABOXAMIDERS | |
| Anglada et al. | Inhibitors of gastric acid secretion: N-sulphonyl formamidines in a series of new histamine H2-receptor antagonists | |
| US3950380A (en) | Phenyl-benzoic acid derivatives | |
| US3674794A (en) | Certain-3-pyridine-sulfonamide derivatives | |
| DE69400024T2 (en) | 2-cyano-2-hydroxypropenamide derivatives, processes for their preparation, their use as medicaments and pharmaceutical compositions containing them. | |
| US4055650A (en) | Certain 4-phenoxy(or phenylthio)-3-n-acylated-sulfonamido-pyridines | |
| US4082757A (en) | Amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide | |
| KR880002706B1 (en) | Sulfonyl urea preparation process | |
| US3764598A (en) | Pyrimidopyridazine derivatives | |
| US3530137A (en) | Certain alkyl and aryl ethers and thioethers of tropine and derivatives thereof | |
| US3963735A (en) | Acylated 2-aminothiazole derivatives | |
| US3378564A (en) | Certain pyridyl tetrazole derivatives | |
| US4728658A (en) | Pyridine derivatives | |
| US4166126A (en) | 1-benzothiepin-4-carboxamides | |
| US3379735A (en) | Sulfamyl aniline derivatives | |
| US4755523A (en) | Abietamide derivatives | |
| KR20000069544A (en) | New 4-(1-piperazinyl)benzoic acid derivatives, process for preparing them and their therapeutic applications |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AS | Assignment |
Owner name: A. CHRISTIAENS S.A., RUE DE 1'ETUVE 60 B-1000 BRUS Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:DELARGE JACQUES E.;LAPIERE CHARLES L.;GEORGES ANDRE H.;AND OTHERS;REEL/FRAME:004414/0567 Effective date: 19850528 |
|
| PTEF | Application for a patent term extension |
Free format text: PRODUCT NAME: DEMADEX (TORSEMIDE); REQUESTED FOR 5 YEARS Filing date: 19931021 Expiry date: 19940419 |
|
| PTEG | Grant of a patent term extension |
Free format text: PRODUCT NAME: DEMADEX (TORSEMIDE) Filing date: 19931021 Expiry date: 19940419 |