Quaternary ammonium-substituted sterol derivatives
US5004737A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Sep 22, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J41/0055
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a novel quaternary ammonium-substituted sterol derivative of the following formula: ##STR1## wherein Q represents an anion of a strong inorganic acid, A represents an oxygen, R.sub.1, R.sub.2, R.sub.3, t, n, and the sterol Rst are defined as herein. The compounds of the present invention as a result of introducing a cationic group into hydroxy group of sterols of ethoxylated compounds thereof which are non-ionic, shows the enhanced substantivity against substrate having, on its surface, an anionic characters under normal conditions such as skin and hair of human being. The compound of the present invention can be used in the field of cosmetics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.