Polycyclic gamma-pyrone-3-carboxaldehyde derivatives
US3959480A · kind A · utility
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2Claims
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Assignee
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Key dates
| Filing date | Feb 3, 1975 |
| Grant date | May 25, 1976 |
| Priority date | — |
| Expiry date | Feb 3, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/92
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel polycyclic gamma-pyrone derivatives having a carboxaldehyde group on the 3-position and optionally substituted on the 5, 6, 7, 8, 9 or 10 positions with a hydroxy, lower alkyl or lower alkoxy group are disclosed, as well as the corresponding N-substituted, formyl imine derivatives thereof. These compounds, and pharmaceutical compositions containing these compounds, are useful for the treatment of allergic conditions and for the treatment of hyperacidity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.