DK158979A - Fremgangsmaade til fremstilling af chromon-2-carboxylsyrer - Google Patents
Fremgangsmaade til fremstilling af chromon-2-carboxylsyrerInfo
- Publication number
- DK158979A DK158979A DK158979A DK158979A DK158979A DK 158979 A DK158979 A DK 158979A DK 158979 A DK158979 A DK 158979A DK 158979 A DK158979 A DK 158979A DK 158979 A DK158979 A DK 158979A
- Authority
- DK
- Denmark
- Prior art keywords
- chromon
- procedure
- making
- carboxylic acids
- carboxylic
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/22—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4
- C07D311/24—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms directly attached in position 4 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 in position 2
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pyrane Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1558678 | 1978-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK158979A true DK158979A (da) | 1979-10-21 |
Family
ID=10061792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK158979A DK158979A (da) | 1978-04-20 | 1979-04-18 | Fremgangsmaade til fremstilling af chromon-2-carboxylsyrer |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS54141776A (da) |
| CA (1) | CA1140140A (da) |
| DK (1) | DK158979A (da) |
| ES (1) | ES479710A1 (da) |
| FI (1) | FI791231A7 (da) |
| NO (1) | NO791298L (da) |
| PT (1) | PT69519A (da) |
| SE (1) | SE7903345L (da) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0662601B2 (ja) * | 1985-08-16 | 1994-08-17 | 京都薬品工業株式会社 | クロモグリク酸誘導体および抗アレルギ−剤 |
-
1979
- 1979-04-17 SE SE7903345A patent/SE7903345L/xx not_active Application Discontinuation
- 1979-04-17 FI FI791231A patent/FI791231A7/fi not_active Application Discontinuation
- 1979-04-18 DK DK158979A patent/DK158979A/da not_active IP Right Cessation
- 1979-04-19 ES ES479710A patent/ES479710A1/es not_active Expired
- 1979-04-19 CA CA000326057A patent/CA1140140A/en not_active Expired
- 1979-04-19 PT PT69519A patent/PT69519A/pt unknown
- 1979-04-19 NO NO791298A patent/NO791298L/no unknown
- 1979-04-20 JP JP4811879A patent/JPS54141776A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FI791231A7 (fi) | 1981-01-01 |
| ES479710A1 (es) | 1980-08-16 |
| NO791298L (no) | 1979-10-23 |
| SE7903345L (sv) | 1979-10-21 |
| JPS54141776A (en) | 1979-11-05 |
| PT69519A (en) | 1979-05-01 |
| CA1140140A (en) | 1983-01-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AHB | Application shelved due to non-payment | ||
| PBP | Patent lapsed |