| abstract |
A substituted derivative of thiamorpholinone, for use in the cosmetic and pharmaceutical field, has the formula ##STR1## wherein n is 0 or 1; R 1 and R 2 each independently represent hydrogen or lower alkyl and R 3 represents hydrogen, mono or polyhydroxyalkyl containing 2-16 carbon atoms, carbamylalkyl, carboxyalkyl or alkoxycarbonylalkyl. When R 3 represents hydrogen, R 4 represents --CO 2 R 5 wherein R 5 is alkyl having 3-18 carbon atoms, optionally interrupted by one or more heteroatoms, or mono or polyhydroxyalkyl having 2-18 carbon atoms. When R 3 represents mono or polyhydroxyalkyl, carbamylalkyl, carboxyalkyl or alkoxycarbonylalkyl, R 4 represents hydrogen or lower alkyl. |