Gold(III) complex, a conjugate of the gold(III) complex, a pharmaceutical composition comprising the gold(III) complex and uses and a process for preparing the gold(III) complex

A pharmaceutically acceptable salt of a gold(III) complex, having formula (I):

• wherein:
• R1 is independently selected from aryl and amine;
• R2 is independently selected from alkyl and cycloalkyl;
• R3 is independently selected from hydrogen, halogen, nitro, cyano, alkyl, alkyloxy, alkylamino, aminodialkyl, hydroxyalkyl, trialkylsilyl, aryldialkylsilyl, alkylthio, cycloalkyl, aryl, heterocycle, polycycle, amino acid, and peptide;
• and
• R4 is independently selected from alkyl, cycloalkyl, alkylalkoxy, alkylamino, dialkylamino, aliphatic amine, alkylthio, trialkylphosphino, dialkylarylphosphino, alkyldiarylphosphino, triarylphosphino, aryl, heterocycle, polycycle, amino acid and peptide.