3-(1H-Tetrazol-5-yl)chromones
US4116971A · kind A · utility
4Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 1977 |
| Grant date | Sep 26, 1978 |
| Priority date | — |
| Expiry date | Aug 15, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is described 3-(1H-tetrazol-5-yl)chromones having the following structural formula: ##STR1## in which R is lower alkoxy having 1 to 3 carbon atoms, aryl such as phenyl, halogen or trihalo lower alkyl. These compounds exhibit anti-allergic properties and are indicated in the treatment of allergic conditions such as hay fever and asthma.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.