Abstract: Process for preparing compounds of the diaminophenothiazinium type of formula (II) below. The products have a high degree of purity and are useful for the preparation of medicaments. In which the R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 groups having the same definition as in formula (I), and R representing a group chosen from: a phenyl or benzyl group, optionally substituted with one or more functions chosen from: a C1-C4 alkyl, a halogen atom, a C1-C4 haloalkyl and a nitro group, a linear, branched or cyclic C1-C8 alkyl group, a C1-C8 alkylamino group, a C1-C8 alkoxy group, a phenyloxy or benzyloxy group optionally substituted on the aromatic nucleus with one or more functions chosen from: a C1-C4 alkyl, a halogen atom, a C1-C4 haloalkyl and a nitro group, Z representing an atom chosen from O and S.

Abstract: Process for preparing compounds of the diaminophenothiazinium type of formula (II) below. The products have a high degree of purity and are useful for the preparation of medicaments. In which the R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 groups having the same definition as in formula (I), and R representing a group chosen from: a phenyl or benzyl group, optionally substituted with one or more functions chosen from: a C1-C4 alkyl, a halogen atom, a C1-C4 haloalkyl and a nitro group, a linear, branched or cyclic C1-C8 alkyl group, a C1-C8 alkylamino group, a C1-C8 alkoxy group, a phenyloxy or benzyloxy group optionally substituted on the aromatic nucleus with one or more functions chosen from: a C1-C4 alkyl, a halogen atom, a C1-C4 haloalkyl and a nitro group, Z representing an atom chosen from O and S.

Abstract: Process for preparing compounds of the diaminophenothiazinium type of formula (II) below. The products have a high degree of purity and are useful for the preparation of medicaments. In which the R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 groups having the same definition as in formula (I), and R representing a group chosen from: a phenyl or benzyl group, optionally substituted with one or more functions chosen from: a C1-C4 alkyl, a halogen atom, a C1-C4 haloalkyl and a nitro group, a linear, branched or cyclic C1-C8 alkyl group, a C1-C8 alkylamino group, a C1-C8 alkoxy group, a phenyloxy or benzyloxy group optionally substituted on the aromatic nucleus with one or more functions chosen from: a C1-C4 alkyl, a halogen atom, a C1-C4 haloalkyl and a nitro group, Z representing an atom chosen from O and S.

Abstract: Process for preparing diaminophenothiazinium type compounds having a step for purification of derivatives (II). The diaminophenothiazinium type compounds having the following formula (I): in which R1, R2, R3, R4, R5, R6, R7, R8, R9 and R10 may be chosen, independently of the others, from the group constituted of: a hydrogen atom, saturated or unsaturated, linear or branched C1-C6 alkyl groups, or C3-C6 cycloalkyl groups, optionally substituted with one or more functions chosen from a halogen atom, and a C1-C6 alkoxy, C1-C6 alkoxycarbonyl or —CONH2 function, aryl groups optionally substituted with one or more functions chosen from: a C1-C4 alkyl, a halogen atom, and a C1-C6 alkoxy, C1-C6 alkyloxycarbonyl or —CONH2 function, in addition, each of R5, R6, R7, R8, R9 and R10 may be chosen, independently of the others, from the halogen atoms: F, Cl, Br and I, and X? represents an organic or inorganic anion.

Abstract: Process for preparing compounds of the diaminophenothiazinium type including a step for purification of derivatives (II). The products resulting from this process have a high degree of purity. Use of these compounds for the preparation of medicaments.