SE8405002D0 - PREPARATION OF BENZOTIAZINE Dioxide - Google Patents
PREPARATION OF BENZOTIAZINE DioxideInfo
- Publication number
- SE8405002D0 SE8405002D0 SE8405002A SE8405002A SE8405002D0 SE 8405002 D0 SE8405002 D0 SE 8405002D0 SE 8405002 A SE8405002 A SE 8405002A SE 8405002 A SE8405002 A SE 8405002A SE 8405002 D0 SE8405002 D0 SE 8405002D0
- Authority
- SE
- Sweden
- Prior art keywords
- dioxide
- preparation
- benzotiazine
- formula
- benzothiazine
- Prior art date
Links
Classifications
-
- 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)
- Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
Abstract
This invention relates to a method for the preparation of a pharmaceutically usable 2-methyl-4-hydroxy-2H-1,2-benzothiazine-1,1-dioxide with formula I <IMG> I In accordance with the invention 2-methyl-4-mesyloxy-2H,1,2-benzothiazine-1,1-dioxide-3-carboxylic acid with formula II <IMG> II is reacted with 2-aminopyridine in the presence of thionyl chloride in an inert solvent. The invention relates also to the intermediate with formula II which can be used in the method.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI833628A FI72317C (en) | 1983-10-06 | 1983-10-06 | PROCEDURE FOR THE FRAMEWORK OF PHARMACEUTICALS 2-METHYL-4-HYDROXY-2H-1,2-BENZOTHIAZINE-1,1-DIOXIDE -3- (N-2-PYRIDYL)-CARBOXAMIDE |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8405002D0 true SE8405002D0 (en) | 1984-10-05 |
SE8405002L SE8405002L (en) | 1985-04-07 |
SE460789B SE460789B (en) | 1989-11-20 |
Family
ID=8517867
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8405002A SE460789B (en) | 1983-10-06 | 1984-10-05 | PROCEDURES FOR PREPARING PHARMACEUTICAL USE 2-METHYL-4-HYDROXY-2H-1,2-BENZOTIAZINE-1,1-DIOXIDE-3- (N-2-PYRIDYL) CARBOXAMIDE |
SE8900248A SE464411B (en) | 1983-10-06 | 1989-01-24 | The intermediate 2-methyl-4-mesyloxy-2H-1,2-benzothiazine- 1,1-dioxide-3-carboxylic acid, or a solvate thereof with dimethylacetamide, for use in preparing a pharmaceutically utilizable benzothiazine dioxide |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8900248A SE464411B (en) | 1983-10-06 | 1989-01-24 | The intermediate 2-methyl-4-mesyloxy-2H-1,2-benzothiazine- 1,1-dioxide-3-carboxylic acid, or a solvate thereof with dimethylacetamide, for use in preparing a pharmaceutically utilizable benzothiazine dioxide |
Country Status (16)
Country | Link |
---|---|
AT (1) | AT387775B (en) |
BE (1) | BE900758A (en) |
CA (1) | CA1246066A (en) |
CS (1) | CS253593B2 (en) |
DD (1) | DD224594A5 (en) |
DK (1) | DK154504C (en) |
ES (1) | ES8505937A1 (en) |
FI (1) | FI72317C (en) |
HU (2) | HU195493B (en) |
IT (1) | IT1218850B (en) |
NO (1) | NO159275C (en) |
PL (1) | PL143957B1 (en) |
PT (1) | PT79326B (en) |
SE (2) | SE460789B (en) |
SU (1) | SU1405703A3 (en) |
YU (2) | YU43381B (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4289879A (en) * | 1980-09-29 | 1981-09-15 | Pfizer Inc. | Synthetic method and intermediate for piroxicam |
JPH08270888A (en) * | 1995-03-30 | 1996-10-15 | Nec Eng Ltd | Heat insulating engagement mechanism |
-
1983
- 1983-10-06 FI FI833628A patent/FI72317C/en not_active IP Right Cessation
-
1984
- 1984-10-01 NO NO843949A patent/NO159275C/en not_active IP Right Cessation
- 1984-10-02 DK DK471284A patent/DK154504C/en not_active IP Right Cessation
- 1984-10-03 HU HU844649A patent/HU195493B/en unknown
- 1984-10-03 CS CS847493A patent/CS253593B2/en unknown
- 1984-10-03 HU HU843746A patent/HU194559B/en unknown
- 1984-10-04 PT PT79326A patent/PT79326B/en not_active IP Right Cessation
- 1984-10-04 YU YU1708/84A patent/YU43381B/en unknown
- 1984-10-04 IT IT22981/84A patent/IT1218850B/en active
- 1984-10-05 ES ES536544A patent/ES8505937A1/en not_active Expired
- 1984-10-05 SE SE8405002A patent/SE460789B/en not_active IP Right Cessation
- 1984-10-05 BE BE0/213782A patent/BE900758A/en not_active IP Right Cessation
- 1984-10-05 AT AT0316384A patent/AT387775B/en active
- 1984-10-05 CA CA000464861A patent/CA1246066A/en not_active Expired
- 1984-10-05 PL PL1984249918A patent/PL143957B1/en unknown
- 1984-10-05 SU SU843805901A patent/SU1405703A3/en active
- 1984-10-05 DD DD84268074A patent/DD224594A5/en not_active IP Right Cessation
-
1986
- 1986-08-27 YU YU1496/86A patent/YU43603B/en unknown
-
1989
- 1989-01-24 SE SE8900248A patent/SE464411B/en not_active IP Right Cessation
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Legal Events
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