Urethane derivatives from amino acids, a process for their preparation and cosmetic or pharmaceutical compositions for use in the treatment of dry skin
US5230890A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 10, 1990 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Jul 10, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/05
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A urethane derivative from amino acids has the formula ##STR1## wherein R represents --CH.sub.2 OH, --CHOH--CH.sub.3 or --(CH.sub.2).sub.3 --NH--CO--NHY, Y represents --H or --COOR', R' represents linear or branched alkyl, optionally unsaturated, having 8-24 carbon atoms, or a monocyclic cycloalkyl substituted by an alkyl whose total number of carbon atoms is equal to or greater than 10, or to the salts of the derivative of formula I or to a mixture of the derivatives of formula I and/or their salts. A method is given for the preparation of the urethane derivative of formula I, as are examples of cosmetic or pharmaceutical compositions containing the urethane derivative, as a hydrating agent, for the treatment of dry skin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.