Ester derivatives of ascorbic and 2-keto acid saccharides
US7871987B2 · kind B2 · utility
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Key dates
| Filing date | Dec 16, 2005 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | May 19, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/395
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel ester derivatives of ascorbic acid and 2-keto-acid saccharides are provided wherein the ester is introduced by ester bond formation between at least one hydroxy-functionality on the ascorbic acid or 2-keto-acid saccharide and a carboxy-functional organosiloxane, or between a 2-keto-gulonic acid and a hydroxy-functional organosiloxane, as well as methods for their synthesis. Treatment, cosmetic, and personal care formulations comprising the novel esters are also provided, including controlled release forms thereof.
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