Substituted tetrahydropyridazino-(1,6-A)benzimidazoles and use as bronchodilators
US4391806A · kind A · utility
1Cited by
2References
5Claims
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Key dates
| Filing date | Jul 12, 1982 |
| Grant date | Jul 5, 1983 |
| Priority date | — |
| Expiry date | Jul 12, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P11/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Substituted tetrahydropyridazino[1,6-a]benzimidazole compounds such as 2-methylamino-6,7,8,9-tetrahydropyridazino[1,6-a]benzimidazole are prepared by reacting a 2-halo-6,7,8,9-tetrahydropyridazino[1,6-a]benzimidazole with an appropriate amine. The compounds are useful as bronchodilators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.