1-Thiachromone-2-carboxylic acids and derivatives
US3952013A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 1974 |
| Grant date | Apr 20, 1976 |
| Priority date | — |
| Expiry date | Mar 27, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D311/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Pharmaceutical compounds of formula I, ##SPC1## in which PA1 P, q, r, and T, which may be the same or different, each represent hydrogen, an alkyl, hydroxy, alkoxy, hydroxyalkoxy, alkoxyalkoxy, acetoxy, carboxy, amino, alkylamino, dialkylamino, alkenyl, p-toluenesulphonyloxy, aralkyl, phenyl, nitro, carboxy ester, alkenyloxy or acyl group, none of which groups contain more than 10 carbon atoms or an adjacent pair of P, Q, R and T, together with the adjacent carbon atoms in the benzene ring may form a fused 5 or 6 membered carbocyclic or oxygen containing heterocyclic ring, and PA1 V and W, which are different, each represent oxygen or sulphur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.