Substituted 1,2,3-triazino[4',5':4,5]-thieno[2,3-B]quinolin-4(3H)-ones
US4496725A · kind A · utility
6Cited by
1References
2Claims
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Assignee
Inventors
Key dates
| Filing date | May 23, 1983 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | May 23, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D495/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Substituted 1,2,3-triazino[4',5':4,5]thieno[2,3-b]quinolin-4(3H)-ones useful as antiallergic agents are described herein. The compounds are prepared by the reaction of an appropriate substituted 3-aminothieno[2,3-b]quinoline-2-carboxamide with sodium nitrite in an acid such as acetic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.