Benzopyran derivatives
US5412117A · kind A · utility
16Cited by
5References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1993 |
| Grant date | May 2, 1995 |
| Priority date | — |
| Expiry date | Jan 26, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/10
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Benzopyran derivatives represented by formula (I): ##STR1## wherein X represents =O, =S, =N-Z (Z represents a lower alkyl group, etc.), or =CHNO.sub.2 ; Y represents a substituted amino group, an alkoxy group, an alkylthio group, etc., and R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, and R.sub.7 each represent a hydrogen atom, a lower alkyl group, etc., are disclosed. The benzopyran derivatives exhibit K.sup.+ channel activating activities and are widely applicable as antiasthmatics, antiepileptics, and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.