| abstract |
The present invention relates to a compound of formula (I) wherein: i is 0 or 1; j is 0 or 1; k is 0 or 1; R 1 and R 2 are in particular H, (C 1 -C 12 )alkyl, or a group of formula C(O)R; R is a, linear or branched, alkyl radical, comprising at least 19 carbon atoms; R 3 is H and k=0 when j=1; or, when j=0, R 3 is —C(O)R or -L-C(O)R; L, U and L″ are linkers; wherein, when j=0, at least one of the groups R 1 ; R 2 and R 3 comprises a radical R. |