The treatment of asthma, hay fever or urticaria
US4029802A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 22, 1974 |
| Grant date | Jun 14, 1977 |
| Priority date | — |
| Expiry date | Apr 22, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There are described compounds of formula I, ##STR1## and pharmaceutically acceptable derivatives thereof, in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are the same or are different and each is a hydrogen or halogen atom or an alkyl, hydroxy, alkoxy, or substituted alkyl or alkoxy group, (for example a hydroxy-alkoxy, alkoxyalkoxy or carboxyalkoxy group), and X is a saturated or unsaturated, substituted or unsubstituted, straight or branched hydrocarbon chain which may be interrupted by a carbocyclic or heterocyclic ring, or by one or more oxygen atoms or carbonyl groups. There are also described processes for making the compounds and pharmaceutical compositions, for the treatment of asthma, containing the compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.