4-Hydroxy-2-quinolinone-3-carboxylic acids and salts thereof
US4187309A · kind A · utility
5Cited by
4References
64Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 20, 1977 |
| Grant date | Feb 5, 1980 |
| Priority date | — |
| Expiry date | Jun 20, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P43/00
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed are compounds which are 4-hydroxy-2-quinolinone-3-carboxylic acids and salts thereof, e.g., 1-allyl-6,7-dimethoxy-4-hydroxy-2-quinolinone-3-carboxylic acid, useful as anti-allergic agents, and prepared by hydrolysis of the corresponding carboxylic acid esters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.