| abstract |
The invention relates to the compound of formula (I), where R' and R" are a hydrogen atom, the monovalent radical of formula (IIa), or the monovalent radical of formula (IIb), it being understood that at least one of the radicals R' or R" are not a hydrogen atom and that, when neither of the radicals R' or R" is a hydrogen atom, R' and R" are identical. The invention also relates to a method for preparing same, and to the use thereof in cosmetics and as a drug. |