NO157139C - 1,2-benzotiazin-3-karboksylat-1,1-dioksyder som er mellomprodukter for fremstilling av piroxicam. - Google Patents

1,2-benzotiazin-3-karboksylat-1,1-dioksyder som er mellomprodukter for fremstilling av piroxicam.

Info

Publication number
NO157139C
NO157139C NO85854770A NO854770A NO157139C NO 157139 C NO157139 C NO 157139C NO 85854770 A NO85854770 A NO 85854770A NO 854770 A NO854770 A NO 854770A NO 157139 C NO157139 C NO 157139C
Authority
NO
Norway
Prior art keywords
dioxyds
benzotiazin
piroxicam
carboxylate
preparation
Prior art date
Application number
NO85854770A
Other languages
English (en)
Other versions
NO854770L (no
NO157139B (no
Inventor
Paul Douglas Weeks
Original Assignee
Pfizer
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US06/308,746 external-priority patent/US4376204A/en
Priority claimed from NO823330A external-priority patent/NO157140C/no
Publication of NO854770L publication Critical patent/NO854770L/no
Application filed by Pfizer filed Critical Pfizer
Publication of NO157139B publication Critical patent/NO157139B/no
Publication of NO157139C publication Critical patent/NO157139C/no

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
    • C07D213/75—Amino or imino radicals, acylated by carboxylic or carbonic acids, or by sulfur or nitrogen analogues thereof, e.g. carbamates
    • 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)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Plural Heterocyclic Compounds (AREA)
NO85854770A 1981-10-05 1985-11-28 1,2-benzotiazin-3-karboksylat-1,1-dioksyder som er mellomprodukter for fremstilling av piroxicam. NO157139C (no)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US06/308,746 US4376204A (en) 1981-10-05 1981-10-05 3-Hydroxy 2-methyl benzisothiazolines as intermediates in production of piroxicam
US41303682A 1982-09-02 1982-09-02
NO823330A NO157140C (no) 1981-10-05 1982-10-04 Fremgangsmaate for fremstilling av piroxicam og visse mellomprodukter som kan overfoeres til piroxicam.

Publications (3)

Publication Number Publication Date
NO854770L NO854770L (no) 1983-04-06
NO157139B NO157139B (no) 1987-10-19
NO157139C true NO157139C (no) 1988-02-03

Family

ID=40134826

Family Applications (2)

Application Number Title Priority Date Filing Date
NO85854769A NO156899C (no) 1981-10-05 1985-11-28 Fremgangsmaate for fremstilling av 1,2-benzotiazin-3-karboksylat-1,1-dioksyder som er mellomprodukter for fremstilling av piroxicam.
NO85854770A NO157139C (no) 1981-10-05 1985-11-28 1,2-benzotiazin-3-karboksylat-1,1-dioksyder som er mellomprodukter for fremstilling av piroxicam.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NO85854769A NO156899C (no) 1981-10-05 1985-11-28 Fremgangsmaate for fremstilling av 1,2-benzotiazin-3-karboksylat-1,1-dioksyder som er mellomprodukter for fremstilling av piroxicam.

Country Status (1)

Country Link
NO (2) NO156899C (no)

Also Published As

Publication number Publication date
NO854770L (no) 1983-04-06
NO156899C (no) 1987-12-16
NO157139B (no) 1987-10-19
NO854769L (no) 1983-04-06
NO156899B (no) 1987-09-07

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