7-Substituted-9-oxoxanthene-2-carboxaldehydes
US4007205A · kind A · utility
0Cited by
2References
3Claims
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Assignee
Inventors
Key dates
| Filing date | Mar 16, 1976 |
| Grant date | Feb 8, 1977 |
| Priority date | — |
| Expiry date | Mar 16, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/86
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are disclosed 7-substituted-9-oxoxanthene-2-carboxaldehydes of the formula: ##STR1## in which R is lower alkoxy or hydroxy. These compounds are indicated in the management of allergic manifestations such as, for example, bronchial asthma or hay fever.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.