The present invention has for an object a cationic lipophilic compound of the following general formula (I):
wherein:
a) R
1
and R′
1
each represent, independently from one another, an alkyl chain, an alkenyl chain or a polyalkenyl chain with from 10 to 24 carbon atoms, with the polyalkenyl chain having from 2 to 4 double links;
b) R
2
is a hydrogen atom or an alkyl chain having from 1 to 4 carbon atoms; and
R
3
is a group with the following formula (IIa) —(CH
2
)
n
— or following formula (IIb) —C(═NH)—NH—(CH
2
)
n
— wherein: n is an integer equal to 0, 1, 2, 3 or 4; and
d) A
+
is an organic cation;
e) X
−
is an anion.