Patent ID: 6956109

Claim:
A compound of general formula (I) where X 1 and X 2 are selected between O and S; R 1 and R 2 are selected between —(CH 2 ) 13 CH 3 and alkyl or alkylene groups with from 2 to 6 carbon atoms, linear or branching, unsubstituted or substituted with one or more substituents selected among aromatic, primary, secondary and tertiary aminic, quaternary ammonium, carboxylic, hydroxylic, polyoxyalkyl and ethereal groups, amino acids, halogen atoms or glucose or a derivative thereof a saccharide moiety having the structure providing that between R 1 and R 2 only one is always —(CH 2 ) 13 CH 3 , R 3 and R 4 are selected between H and alkyl or alkylene groups with from 2 to 6 carbon atoms, linear or branching, unsubstituted or substituted with one or more substituents selected among aromatic, primary, secondary and tertiary aminic, quaternary ammonium, carboxylic, hydroxylic, polyoxyalkyl and ethereal groups, amino acids, halogen atoms or glucose or a derivative thereof.