Thienothiazine derivatives
US4224445A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1978 |
| Grant date | Sep 23, 1980 |
| Priority date | — |
| Expiry date | Oct 30, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D333/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to compounds of the formula ##STR1## wherein A together with the two carbon atoms to which it is attached forms the group ##STR2## and the broken line represents the double bond in group (a); R.sub.1 represents a lower alkyl group; R.sub.2 represents the residue of an aromatic heterocyclic ring containing from 1 to 4 hetero atoms, which may be substituted by one or two lower alkyl groups, or a phenyl group which may be substituted by halogen, hydroxy, lower alkyl, trifluoromethyl or lower alkoxy and R.sub.3 and R.sub.4 each represent a hydrogen atom or a lower alkyl group. Also provided are methods for their preparation. The thienothiazine derivatives provided by this invention have anti-flammatory, analgesic and anti-rheumatic activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.