Novel imidazobenzoxazines
US4145419A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1977 |
| Grant date | Mar 20, 1979 |
| Priority date | — |
| Expiry date | Aug 1, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D265/36
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel imidazobenzoxazines of the formula ##STR1## wherein X is selected from the group consisting of hydrogen, nitro, NH.sub.2 and a protected amino Z is selected from the group consisting of --COOR, and ##STR2## R is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms, ##STR3## alkali metal, alkaline earth metal, magnesium, aluminum and nitrogen bases, n is 1,2 or 3, R.sub.1 and R.sub.2 individually are selected from the group consisting of hydrogen and alkyl of 1 to 5 carbon atoms and taken together with the nitrogen atom to which they are attached form a saturated heterocyclic ring of 4 to 6 carbon atoms optionally interrupted by another heteroatom which may optionally be substituted with alkyl of 1 to 5 carbon atoms and their non-toxic, pharmaceutically acceptable acid addition salts having antiallergic and bronchodilatory activity and their preparation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.