Tocopherol esters and their cosmetic and pharmaceutical uses
US6136851A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 10, 1999 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Nov 10, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q19/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to an ester. The ester is characterized in that it presents the following chemical formula (I): ##STR1## in which: R.sub.1, R.sub.2 and R.sub.3 independently represent an atom of hydrogen, a methyl radical, A represents the following groups: ##STR2## R.sub.4 and R.sub.5 are identical or different and each represents a chain of the form: EQU --B.sub.m --C.sub.n --B.sub.p --C.sub.q --H in which: B is the following group: ##STR3## C is the following group: ##STR4## and in which the indices m, n, p, and q are respective integers lying in the range 0 to 4, it being understood that the sum m+n+p+q is limited to integers in the range 0 to 4. The ester can be used for preparing cosmetic or pharmaceutical, in particular dermatological, compositions having activity against radicals, against inflammation, favoring differentiation of keratinocytes, improving skin moisturizing, improving skin grain fineness, and having anti-aging or depigmenting activity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.