Benzopyranone-.beta.-D-thioxylosides and their use in therapy
US5169838A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1990 |
| Grant date | Dec 8, 1992 |
| Priority date | — |
| Expiry date | Sep 10, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07H17/075
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates, by way of novel industrial products which are useful in therapy, to the benzopyranone-.beta.-D-thioxyloside compounds of the formula ##STR1## in which: one of the substituents R or R' is an oxygen atom double-bonded to the corresponding cyclic carbon atom and the other is a group R.sub.1, PA1 the symbol represents a double bond conjugated to the CO group provided by one of the substituents R or R', PA1 X is a sulfur atom or an oxygen atom, PA1 R.sub.1 and R.sub.2, which are identical or different, are each a hydrogen atom, a C.sub.1 -C.sub.4 alkyl group, a halogen atom, a trifluoromethyl group or a phenyl group, it being possible for R.sub.1 and R.sub.2, taken together, to form a 7,8,9,10-tetrahydrodibenzo[b,d]pyran-6-one group or a 1,2,3,4-tetrahydro-9H-xanthen-9-one group with the benzopyranone group to which they are bonded, and PA1 Y is the hydrogen atom or an aliphatic acyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.