Spirobenzoxazinium salts, method of use and compositions thereof as antihypertensive agents
US4067980A · kind A · utility
34Cited by
0References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 16, 1976 |
| Grant date | Jan 10, 1978 |
| Priority date | — |
| Expiry date | Aug 16, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D265/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Quaternary salts of 3,4-dihydrospiro-2H-1,3-benzoxazines are prepared by treating 3,4-dihydrospiro-2H-1,3-benzoxazines with an alkylating agent. The products are antihypertensive agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.