Substituted 11-oxo-11H-pyrido[2,1-b]quinazolines and method of inhibiting allergic reactions with them
US4348396A · kind A · utility
8Cited by
8References
35Claims
0Family size
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Key dates
| Filing date | May 2, 1980 |
| Grant date | Sep 7, 1982 |
| Priority date | — |
| Expiry date | May 2, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D213/61
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Pyrido[2,1-b]quinazolines of the formulas ##STR1## wherein R.sub.1, R.sub.1 ', R.sub.2, R.sub.2 ', R.sub.3, R.sub.3 ', R.sub.4 and R.sub.10 are as hereinafter set forth, and processes for the preparation thereof, are described. The compounds of formulas I and II are useful as agents in the prevention of allergic reactions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.