Certain 3,4-dihydro-2H-pyrano[2,3-b]pyridines
US5336771A · kind A · utility
0Cited by
1References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1992 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Oct 14, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to processes and intermediates for the preparation of spiro-heteroazolones. The latter compounds are useful as aldose reductase inhibitors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.