Pyrazolo[5,1-b]quinazolin-9-(4H)-ones and anti-allergic pharmaceutical compositions containing them
US4261996A · kind A · utility
9Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 1980 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Jan 11, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Certain pyrazolo[5,1-b]quinazolin-9-(4H)-ones are disclosed. These compounds prevent the allergic response in mammals. Novel alkylthioanthranilic acids, useful as intermediates, are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.