Patent number: 5093516
Abstract: An aromatic compound of the formula ##STR1## wherein n is 0 or 1,(1) when n is 1,R' represents hydrogen or C.sub.1 -C.sub.4 alkoxy,R" represents hydrogen, OH, C.sub.1 -C.sub.4 acyloxy, C.sub.1 -C.sub.4 alkoxy or amino,or R' and R" taken together form an oxo, methano or hydroxy-imino radical,R.sub.1 represents--CH.sub.2 OH or --COR.sub.10,R.sub.10 represents hydrogen, OR.sub.11 or ##STR2## R.sub.11 represents hydrogen, C.sub.1 -C.sub.20 alkyl, monohydroxyalkyl, polyhydroxy alkyl, aryl, aralkyl, the residue of a sugar or ##STR3## p is 1,2 or 3, r' and r" represent hydrogen, lower alkyl, monohydroxyalkyl, polyhydroxyalkyl, aryl, benzyl, the residue of an amino acid or the residue of an aminated sugar, of r' and r" taken together form a heterocycle,R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 represent hydrogen, OH, C.sub.1 -C.sub.12 alkyl, cycloalkyl, cycloalkenyl, phenyl or a radical of the formulas (i)--X--C.sub.6 H.sub.5, (ii)--X--R.sub.12 or (iii)--NHCOR.sub.13,X is --0--,--S--,--SO--,--SO.sub.
Type:
Grant
Filed:
April 3, 1987
Date of Patent:
March 3, 1992
Assignee:
L'Oreal
Inventors:
Jean Maignan, Gerard Lang, Gerard Malle, Serge Restle, Braham Shroot