Alkanophenones useful for treating allergies
US5145868A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1991 |
| Grant date | Sep 8, 1992 |
| Priority date | — |
| Expiry date | Nov 15, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D409/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Substituted alkanophenones of the general formula ##STR1## in which R.sub.1 is unsubstituted or fluorinated lower alkyl, R.sub.2 is hydrogen, or unsubstituted or fluorinated lower alkyl or lower alkenyl, X is lower alkylene, oxy, thio or a direct bond, alk is lower alkylene, n is 1 or 2, R.sub.3 is a 5-membered heteroaryl radical that contains 1N, O or S atom as hetero atom and is unsubstituted or is substituted by unsubstituted or fluorinated lower alkyl, by etherified or esterified hydroxy, by unsubstituted or lower alkylated amino and/or by free, esterfied or amidated carboxy, R.sub.4 is free, esterified or amidated carboxy or 5-tetrazolyl, and R.sub.5 is hydrogen or lower alkyl, have leucotriene-antagonistic properties can e used as antiallergic active ingredients in medicaments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.