Substituted pyrano[3,2-c] [1,2]benzothiazine 6,6-dioxides
US3937828A · kind A · utility
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2Claims
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Assignee
Inventors
Key dates
| Filing date | Jul 31, 1974 |
| Grant date | Feb 10, 1976 |
| Priority date | — |
| Expiry date | Jul 31, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F5/022
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Novel pyrano[3,2-c][1,2]benzothiazine 6,6-dioxides are disclosed, substituted on the 3 position by a lower alkyl, carboxaldehyde, or hydroxymethyl group and, optionally substituted on the 5 position by a lower alkyl group. The corresponding aldehyde thiosemicarbazone derivatives of these compounds are also disclosed. Pharmaceutical compositions containing the substituted pyrano[3,2-c][1,2]benzothiazine 6,6-dioxides of this invention are useful in the treatment of hyperacidity; certain of these compounds also demonstrate anti-allergy activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.