DD202151A5 - Verfahren zur herstellung von piroxicam - Google Patents
Verfahren zur herstellung von piroxicam Download PDFInfo
- Publication number
- DD202151A5 DD202151A5 DD81233629A DD23362981A DD202151A5 DD 202151 A5 DD202151 A5 DD 202151A5 DD 81233629 A DD81233629 A DD 81233629A DD 23362981 A DD23362981 A DD 23362981A DD 202151 A5 DD202151 A5 DD 202151A5
- Authority
- DD
- German Democratic Republic
- Prior art keywords
- piroxicam
- reaction
- methyl
- benzothiazine
- ester
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- QYSPLQLAKJAUJT-UHFFFAOYSA-N piroxicam Chemical compound OC=1C2=CC=CC=C2S(=O)(=O)N(C)C=1C(=O)NC1=CC=CC=N1 QYSPLQLAKJAUJT-UHFFFAOYSA-N 0.000 title abstract description 28
- 229960002702 piroxicam Drugs 0.000 title abstract description 25
- 238000004519 manufacturing process Methods 0.000 title description 2
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 150000002148 esters Chemical class 0.000 claims description 12
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000008096 xylene Substances 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 3
- -1 ester compound Chemical class 0.000 abstract description 6
- 238000002360 preparation method Methods 0.000 abstract description 6
- VJGMQUWZFATDFA-UHFFFAOYSA-N 2-methoxyethyl 4-hydroxy-2-methyl-1,1-dioxo-1$l^{6},2-benzothiazine-3-carboxylate Chemical compound C1=CC=C2S(=O)(=O)N(C)C(C(=O)OCCOC)=C(O)C2=C1 VJGMQUWZFATDFA-UHFFFAOYSA-N 0.000 abstract description 3
- 229940121363 anti-inflammatory agent Drugs 0.000 abstract description 2
- 239000002260 anti-inflammatory agent Substances 0.000 abstract description 2
- 239000002243 precursor Substances 0.000 abstract description 2
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 15
- 239000011541 reaction mixture Substances 0.000 description 14
- ICSNLGPSRYBMBD-UHFFFAOYSA-N 2-aminopyridine Chemical compound NC1=CC=CC=N1 ICSNLGPSRYBMBD-UHFFFAOYSA-N 0.000 description 12
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 10
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 8
- 239000006227 byproduct Substances 0.000 description 8
- 150000001875 compounds Chemical class 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 150000004702 methyl esters Chemical class 0.000 description 7
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 6
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 5
- SVLBINWLZIVRJX-UHFFFAOYSA-N 2-methoxyethyl 2-chloroacetate Chemical compound COCCOC(=O)CCl SVLBINWLZIVRJX-UHFFFAOYSA-N 0.000 description 4
- 125000004200 2-methoxyethyl group Chemical group [H]C([H])([H])OC([H])([H])C([H])([H])* 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- KEAYESYHFKHZAL-UHFFFAOYSA-N Sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- CVHZOJJKTDOEJC-UHFFFAOYSA-N saccharin Chemical compound C1=CC=C2C(=O)NS(=O)(=O)C2=C1 CVHZOJJKTDOEJC-UHFFFAOYSA-N 0.000 description 3
- 229940081974 saccharin Drugs 0.000 description 3
- 235000019204 saccharin Nutrition 0.000 description 3
- 239000000901 saccharin and its Na,K and Ca salt Substances 0.000 description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 3
- NGNBDVOYPDDBFK-UHFFFAOYSA-N 2-[2,4-di(pentan-2-yl)phenoxy]acetyl chloride Chemical compound CCCC(C)C1=CC=C(OCC(Cl)=O)C(C(C)CCC)=C1 NGNBDVOYPDDBFK-UHFFFAOYSA-N 0.000 description 2
- HEBOMJVUVHOAGO-UHFFFAOYSA-N 2-methoxyethyl 4-hydroxy-1,1-dioxo-2h-1$l^{6},2-benzothiazine-3-carboxylate Chemical compound C1=CC=C2S(=O)(=O)NC(C(=O)OCCOC)=C(O)C2=C1 HEBOMJVUVHOAGO-UHFFFAOYSA-N 0.000 description 2
- 101000588924 Anthopleura elegantissima Delta-actitoxin-Ael1a Proteins 0.000 description 2
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 description 2
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 238000005915 ammonolysis reaction Methods 0.000 description 2
- 239000012267 brine Substances 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 239000000356 contaminant Substances 0.000 description 2
- 229910000365 copper sulfate Inorganic materials 0.000 description 2
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 2
- 238000004128 high performance liquid chromatography Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 239000012442 inert solvent Substances 0.000 description 2
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000011987 methylation Effects 0.000 description 2
- 238000007069 methylation reaction Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000012312 sodium hydride Substances 0.000 description 2
- 229910000104 sodium hydride Inorganic materials 0.000 description 2
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- YSMNECAIZNOYOW-UHFFFAOYSA-N 1,1-dioxo-2h-1$l^{6},2-benzothiazine-3-carboxamide Chemical compound C1=CC=C2S(=O)(=O)NC(C(=O)N)=CC2=C1 YSMNECAIZNOYOW-UHFFFAOYSA-N 0.000 description 1
- XTIGGAHUZJWQMD-UHFFFAOYSA-N 1-chloro-2-methoxyethane Chemical compound COCCCl XTIGGAHUZJWQMD-UHFFFAOYSA-N 0.000 description 1
- IFTPCUVCJPGKFN-UHFFFAOYSA-N 2-[4-(2-methoxyethyl)-1,1,3-trioxo-1,2-benzothiazol-2-yl]acetic acid Chemical compound COCCC1=CC=CC2=C1C(=O)N(CC(O)=O)S2(=O)=O IFTPCUVCJPGKFN-UHFFFAOYSA-N 0.000 description 1
- ASQUQUOEFDHYGP-UHFFFAOYSA-N 2-methoxyethanolate Chemical compound COCC[O-] ASQUQUOEFDHYGP-UHFFFAOYSA-N 0.000 description 1
- LJRQCWQQJQQIII-UHFFFAOYSA-N 2-methoxyethyl 2-(3-oxo-1,2-benzothiazol-2-yl)acetate Chemical group C1=CC=C2C(=O)N(CC(=O)OCCOC)SC2=C1 LJRQCWQQJQQIII-UHFFFAOYSA-N 0.000 description 1
- AZSLPHLGYDIYIL-UHFFFAOYSA-N 2-methoxyethyl 4-hydroxy-2-methyl-1,2-benzothiazine-3-carboxylate Chemical compound C1=CC=C2SN(C)C(C(=O)OCCOC)=C(O)C2=C1 AZSLPHLGYDIYIL-UHFFFAOYSA-N 0.000 description 1
- GUISUKUVTLQKJU-UHFFFAOYSA-N 2-methyl-1,2-benzothiazin-4-ol Chemical compound C1=CC=C2C(O)=CN(C)SC2=C1 GUISUKUVTLQKJU-UHFFFAOYSA-N 0.000 description 1
- BYHUHMDBGLBLTI-UHFFFAOYSA-N 4-hydroxy-2-(2-methoxyethyl)-1,1-dioxo-1lambda6,2-benzothiazine-3-carboxamide Chemical compound C1=CC=C2S(=O)(=O)N(CCOC)C(C(N)=O)=C(O)C2=C1 BYHUHMDBGLBLTI-UHFFFAOYSA-N 0.000 description 1
- RQRCJRUUPFZABV-UHFFFAOYSA-N 4-hydroxy-2-methyl-1,2-benzothiazine-3-carboxylic acid Chemical compound C1=CC=C2C(O)=C(C(O)=O)N(C)SC2=C1 RQRCJRUUPFZABV-UHFFFAOYSA-N 0.000 description 1
- JGXDTHDXNCUXBJ-UHFFFAOYSA-N 4-hydroxy-n-pyridin-2-yl-2h-1,2-benzothiazine-3-carboxamide Chemical compound N1SC2=CC=CC=C2C(O)=C1C(=O)NC1=CC=CC=N1 JGXDTHDXNCUXBJ-UHFFFAOYSA-N 0.000 description 1
- 101100283604 Caenorhabditis elegans pigk-1 gene Proteins 0.000 description 1
- VGCXGMAHQTYDJK-UHFFFAOYSA-N Chloroacetyl chloride Chemical compound ClCC(Cl)=O VGCXGMAHQTYDJK-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- HSNVNALJRSJDHT-UHFFFAOYSA-N P(=O)(=O)[Mo] Chemical compound P(=O)(=O)[Mo] HSNVNALJRSJDHT-UHFFFAOYSA-N 0.000 description 1
- VJMAITQRABEEKP-UHFFFAOYSA-N [6-(phenylmethoxymethyl)-1,4-dioxan-2-yl]methyl acetate Chemical compound O1C(COC(=O)C)COCC1COCC1=CC=CC=C1 VJMAITQRABEEKP-UHFFFAOYSA-N 0.000 description 1
- 125000002252 acyl group Chemical group 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000006286 aqueous extract Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- VAYGXNSJCAHWJZ-UHFFFAOYSA-N dimethyl sulfate Chemical compound COS(=O)(=O)OC VAYGXNSJCAHWJZ-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- QWTNANUGXZEPFQ-UHFFFAOYSA-N ethyl 4-hydroxy-2-methyl-1,1-dioxo-1$l^{6},2-benzothiazine-3-carboxylate Chemical group C1=CC=C2S(=O)(=O)N(C)C(C(=O)OCC)=C(O)C2=C1 QWTNANUGXZEPFQ-UHFFFAOYSA-N 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- IVSZLXZYQVIEFR-UHFFFAOYSA-N m-xylene Chemical group CC1=CC=CC(C)=C1 IVSZLXZYQVIEFR-UHFFFAOYSA-N 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 239000012022 methylating agents Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 125000005825 oxyethoxy group Chemical group [H]C([H])(O[*:1])C([H])([H])O[*:2] 0.000 description 1
- 239000003495 polar organic solvent Substances 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
- UIICPZFWHBJNIG-UHFFFAOYSA-N sodium;2-methoxyethanolate Chemical compound [Na+].COCC[O-] UIICPZFWHBJNIG-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004809 thin layer chromatography Methods 0.000 description 1
- 238000007056 transamidation reaction Methods 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D275/00—Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings
- C07D275/04—Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings condensed with carbocyclic rings or ring systems
- C07D275/06—Heterocyclic compounds containing 1,2-thiazole or hydrogenated 1,2-thiazole rings condensed with carbocyclic rings or ring systems with hetero atoms directly attached to the ring sulfur atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D279/00—Heterocyclic compounds containing six-membered rings having one nitrogen atom and one sulfur atom as the only ring hetero atoms
- C07D279/02—1,2-Thiazines; Hydrogenated 1,2-thiazines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
- Pyridine Compounds (AREA)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/191,716 US4289879A (en) | 1980-09-29 | 1980-09-29 | Synthetic method and intermediate for piroxicam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD202151A5 true DD202151A5 (de) | 1983-08-31 |
Family
ID=22706653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD81233629A DD202151A5 (de) | 1980-09-29 | 1981-09-28 | Verfahren zur herstellung von piroxicam |
Country Status (30)
| Country | Link |
|---|---|
| US (1) | US4289879A (pl) |
| EP (1) | EP0049099B1 (pl) |
| JP (2) | JPS5788172A (pl) |
| KR (1) | KR850000923B1 (pl) |
| AR (1) | AR228373A1 (pl) |
| AU (1) | AU528125B2 (pl) |
| CA (1) | CA1171413A (pl) |
| CS (1) | CS228520B2 (pl) |
| DD (1) | DD202151A5 (pl) |
| DE (1) | DE3171404D1 (pl) |
| DK (1) | DK148232C (pl) |
| EG (1) | EG16103A (pl) |
| ES (1) | ES505851A0 (pl) |
| FI (1) | FI72719C (pl) |
| GR (1) | GR75772B (pl) |
| GT (1) | GT198171634A (pl) |
| HK (1) | HK52287A (pl) |
| HU (1) | HU186785B (pl) |
| IE (1) | IE51598B1 (pl) |
| IL (1) | IL63938A0 (pl) |
| MY (1) | MY8700511A (pl) |
| NO (1) | NO158061C (pl) |
| NZ (1) | NZ198475A (pl) |
| PH (1) | PH18475A (pl) |
| PL (1) | PL130042B1 (pl) |
| PT (1) | PT73738B (pl) |
| SG (1) | SG23187G (pl) |
| SU (1) | SU1122224A3 (pl) |
| YU (1) | YU42428B (pl) |
| ZA (1) | ZA816706B (pl) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4434164A (en) | 1981-06-01 | 1984-02-28 | Pfizer Inc. | Crystalline benzothiazine dioxide salts |
| GT198276334A (es) * | 1981-08-03 | 1984-01-10 | Procedimiento e inter-medios para la produccion de carboxamidas de benzotiazina. | |
| IN158333B (pl) * | 1981-08-03 | 1986-10-18 | Pfizer | |
| IN159273B (pl) * | 1981-10-05 | 1987-04-25 | Pfizer | |
| US4376204A (en) * | 1981-10-05 | 1983-03-08 | Pfizer Inc. | 3-Hydroxy 2-methyl benzisothiazolines as intermediates in production of piroxicam |
| CA1197244A (en) * | 1982-04-16 | 1985-11-26 | Medichem, S.A. | Process for the preparation of 4-hydroxy-2-methyl-2h- 1,2-benzothiazine-3-carboxamide-1,1-dioxides |
| SU1306476A3 (ru) * | 1982-06-17 | 1987-04-23 | Пфайзер,Инк (Фирма) | Способ получени 2-метил-3- @ -(2-пиридил)-карбамоил-3,4-дигидро-2 @ -1,2-бензтиазин-1,1-диоксида |
| ATE31309T1 (de) * | 1982-07-07 | 1987-12-15 | Siegfried Ag | Verfahren zur herstellung von 4-hydroxy-2-methyln-2-pyridyl-2h-1,2-benzothiazin-3-carboxamid 1,1- dioxid. |
| IT1153293B (it) * | 1982-10-22 | 1987-01-14 | Francia Famaceutici S R L | Derivati del 4-idrossi-2-metil-2h-1, 2-benzotiazina-3-carbossamide 1, 1-biossido e procedimento per la loro preparazione |
| FI72317C (fi) * | 1983-10-06 | 1987-05-11 | Pfizer | Foerfarande foer framstaellning av farmaceutiskt anvaendbar 2-metyl-4-hydroxi-2h-1,2-benzotiazin-1,1-dioxid -3-(n-2-pyridyl)-karboxamid och i foerfarandet anvaendbar mellanprodukt. |
| US4829062A (en) * | 1986-05-16 | 1989-05-09 | Pfizer Inc. | Benzothiazine dioxide derivatives |
| ES2002646A6 (es) * | 1987-03-27 | 1988-09-01 | Induspol Sa | Procedimiento para la obtencion de 4-hidroxi-2-metil-n-(2-piri-dil)-2h-1,2-benzotiacina-3-carboxamida 1,1-dioxido |
| US5081118A (en) * | 1987-10-26 | 1992-01-14 | Pfizer Inc. | Benzothiazine dioxide derivatives |
| FR2942797B1 (fr) * | 2009-03-03 | 2011-04-29 | Pf Medicament | Derives de benzothiazines, leur preparation et leur application a titre de medicaments |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3501466A (en) * | 1967-11-30 | 1970-03-17 | Mcneilab Inc | 3-carbamoyl and 3-alkoxycarbonyl benzothiazine-1,1-dioxides |
| US3591584A (en) * | 1968-08-27 | 1971-07-06 | Pfizer | Benzothiazine dioxides |
| US3787324A (en) * | 1971-03-01 | 1974-01-22 | Warner Lambert Co | 4-hydroxy-3-(3-isoxazolocarbamyl)-2h-1,2-benzothiazine 1,dioxides and process for their production |
| US3853862A (en) * | 1973-04-23 | 1974-12-10 | Pfizer | Production of 4-hydroxy-1,2-benzothiazine-3-carboxamides |
| US4074048A (en) * | 1976-05-10 | 1978-02-14 | Warner-Lambert Company | Process for the preparation of 4-hydroxy-2H-1,2-benzothiazine-3-carboxamide 1,1-dioxides |
-
1980
- 1980-09-29 US US06/191,716 patent/US4289879A/en not_active Expired - Lifetime
-
1981
- 1981-09-23 EG EG541/81A patent/EG16103A/xx active
- 1981-09-23 DE DE8181304370T patent/DE3171404D1/de not_active Expired
- 1981-09-23 EP EP81304370A patent/EP0049099B1/en not_active Expired
- 1981-09-25 CA CA000386690A patent/CA1171413A/en not_active Expired
- 1981-09-25 AR AR286875A patent/AR228373A1/es active
- 1981-09-25 GT GT198171634A patent/GT198171634A/es unknown
- 1981-09-25 IL IL63938A patent/IL63938A0/xx not_active IP Right Cessation
- 1981-09-25 IE IE2233/81A patent/IE51598B1/en not_active IP Right Cessation
- 1981-09-25 YU YU2309/81A patent/YU42428B/xx unknown
- 1981-09-28 ZA ZA816706A patent/ZA816706B/xx unknown
- 1981-09-28 GR GR66142A patent/GR75772B/el unknown
- 1981-09-28 KR KR1019810003626A patent/KR850000923B1/ko active
- 1981-09-28 DD DD81233629A patent/DD202151A5/de not_active IP Right Cessation
- 1981-09-28 NO NO813290A patent/NO158061C/no unknown
- 1981-09-28 CS CS817107A patent/CS228520B2/cs unknown
- 1981-09-28 PL PL1981233212A patent/PL130042B1/pl unknown
- 1981-09-28 ES ES505851A patent/ES505851A0/es active Granted
- 1981-09-28 DK DK428781A patent/DK148232C/da not_active IP Right Cessation
- 1981-09-28 JP JP56153540A patent/JPS5788172A/ja active Granted
- 1981-09-28 HU HU812792A patent/HU186785B/hu not_active IP Right Cessation
- 1981-09-28 FI FI813003A patent/FI72719C/fi not_active IP Right Cessation
- 1981-09-28 AU AU75698/81A patent/AU528125B2/en not_active Ceased
- 1981-09-28 NZ NZ198475A patent/NZ198475A/xx unknown
- 1981-09-28 SU SU813338298A patent/SU1122224A3/ru active
- 1981-09-28 PT PT73738A patent/PT73738B/pt not_active IP Right Cessation
- 1981-09-29 PH PH26285A patent/PH18475A/en unknown
-
1985
- 1985-11-06 JP JP60248694A patent/JPS61112064A/ja active Granted
-
1987
- 1987-03-09 SG SG231/87A patent/SG23187G/en unknown
- 1987-07-09 HK HK522/87A patent/HK52287A/xx unknown
- 1987-12-30 MY MY511/87A patent/MY8700511A/xx unknown
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