Hydroquinone amino-acid esters, methods of preparation, and pharmaceutical or cosmetic compositions containing them
US5527523A · kind A · utility
3Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 13, 1992 |
| Grant date | Jun 18, 1996 |
| Priority date | — |
| Expiry date | Oct 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C233/83
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Hydroquinone amino-acid esters having formula (I), pharmaceutical or cosmetic compositions containing them, particularly dermatological compositions having pigment-removing activity, and the pharmaceutical, cosmetic or aesthetic uses thereof. The preparation of these novel hydroquinone esters from natural amino-acid derivatives is also described. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.