Bicyclic aromatic compounds, a process for their preparation and their use in cosmetics and human and veterinary medicine
US4898864A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 1987 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Oct 27, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C65/40
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Bicyclic aromatic compound having the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent hydrogen or alkyl, at least two of R.sub.1 -R.sub.4 radicals being other than hydrogen, PA0 A represents methylene or dimethylene; when A represents dimethylene, R.sub.1 and R.sub.3 together can form a methylene or dimethylene radical, PA0 R.sub.5 and R.sub.6 represent hydrogen, halogen, lower alkyl, lower alkoxy or hydroxy, PA0 R' represents hydrogen, hydroxy, alkoxy, C.sub.1 -C.sub.4 cicyloxy or amino, PA0 R" represents hydrogen or lower alkoxy, or R' and R" together form an oxo, methano or hydroxyimino radical, PA0 B represents cyclohexyl, cyclohexenyl, cyclohexadienyl or phenyl, substituted or not, PA0 R represents --CH.sub.2 OH or --COR.sub.7, PA0 R.sub.7 represents hydrogen, --OR.sub.8 or ##STR2## R.sub.8 represents hydrogen, C.sub.1 -C.sub.20 alkyl, monohydroxyalkyl, polyhydroxyalkyl, aryl, aralkyl or a sugar residue. PA0 r' and r" represent hydrogen, alkyl, monohydroxyalkyl, polyhydroxyalkyl, aryl or benzyl, the residue of an amino acid or an aminated sugar, or taken together form a heterocycle, and PA0 the salts of the compound of formula I and their optical isome…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.