PT69519A - Process for the preparation of chromone-2-carboxylic acids - Google Patents
Process for the preparation of chromone-2-carboxylic acidsInfo
- Publication number
- PT69519A PT69519A PT69519A PT6951979A PT69519A PT 69519 A PT69519 A PT 69519A PT 69519 A PT69519 A PT 69519A PT 6951979 A PT6951979 A PT 6951979A PT 69519 A PT69519 A PT 69519A
- Authority
- PT
- Portugal
- Prior art keywords
- chromone
- preparation
- carboxylic acids
- carboxylic
- acids
- 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)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Pyrane Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1558678 | 1978-04-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| PT69519A true PT69519A (en) | 1979-05-01 |
Family
ID=10061792
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT69519A PT69519A (en) | 1978-04-20 | 1979-04-19 | Process for the preparation of chromone-2-carboxylic acids |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS54141776A (en) |
| CA (1) | CA1140140A (en) |
| DK (1) | DK158979A (en) |
| ES (1) | ES479710A1 (en) |
| FI (1) | FI791231A (en) |
| NO (1) | NO791298L (en) |
| PT (1) | PT69519A (en) |
| SE (1) | SE7903345L (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0662601B2 (en) * | 1985-08-16 | 1994-08-17 | 京都薬品工業株式会社 | Cromoglycic acid derivative and anti-allergic agent |
-
1979
- 1979-04-17 SE SE7903345A patent/SE7903345L/en not_active Application Discontinuation
- 1979-04-17 FI FI791231A patent/FI791231A/en not_active Application Discontinuation
- 1979-04-18 DK DK158979A patent/DK158979A/en not_active IP Right Cessation
- 1979-04-19 ES ES479710A patent/ES479710A1/en not_active Expired
- 1979-04-19 PT PT69519A patent/PT69519A/en unknown
- 1979-04-19 NO NO791298A patent/NO791298L/en unknown
- 1979-04-19 CA CA000326057A patent/CA1140140A/en not_active Expired
- 1979-04-20 JP JP4811879A patent/JPS54141776A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54141776A (en) | 1979-11-05 |
| SE7903345L (en) | 1979-10-21 |
| ES479710A1 (en) | 1980-08-16 |
| NO791298L (en) | 1979-10-23 |
| CA1140140A (en) | 1983-01-25 |
| FI791231A (en) | 1979-10-21 |
| DK158979A (en) | 1979-10-21 |
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