Patent ID: 8568491

Claim:
Cationic 4-aminoindole of general formula (I), addition salts thereof with an acid and solvates thereof: in which: R 1 is a linear or branched saturated C 2 -C 20 alkyl radical, which is substituted or interrupted with a cationic radical, R 1 also optionally being interrupted with one or more oxygen atoms and/or with one or more groups NR 7 ; R 7 is a hydrogen atom or a linear or branched C 1 -C 4 alkyl radical, a benzyl radical or an acetyl radical; R 2 , R 3 and R 6 , independently of each other, are chosen from: a hydrogen atom, halogens chosen from fluorine, chlorine and bromine, and linear or branched C 1 -C 4 alkyl, carboxyl (—COOH) or (C 1 -C 4 ) alkoxycarbonyl radicals; R 4 and R 5 , independently of each other, are chosen from: a hydrogen atom and C 1 -C 4 alkyl radicals; An- represents an anion or a mixture of anions, the said cationic radical being a linear, branched or cyclic, saturated or unsaturated radical, comprising a quaternary ammonium of the type —N − RaRb- or —N + RaRbRc, with Ra, Rb and Rc, which may be identical or different, representing a C 1 -C 6 alkyl radical that may be substituted with a hydroxyl; or Ra and Rb together forming a saturated or unsaturated 5- to 8-membered heterocycle chosen from imidazolium, pyridinium, piperazinium, piperidinium,pyrrolidinium, morpholinium, pyrimidinium, thiazolium, benzimidazolium, benzothiazolium, oxazolium, benzotriazolium, pyrazolium, triazolium and benzoxazolium, and Rc, when it is present, being a C1-C6 alkyl radical that may be substituted with a hydroxyl.