Amanita toxin derivatives of formula (I) wherein formula (a) is (1) r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, x, l, m, n and q are defined herein. the preparation of derivatives. therapeutic use of derivatives in the targeted treatment of cancer, autoimmune disorders and infectious diseases.derivados de toxinas de amanita de formula (i), em que, formula (a) r1, r2, r3, r4, r5, r6, r7, r8, r9, r10, x, l, m, n e q são aqui definidos. a preparação dos derivados. o uso terapêutico dos derivados no tratamento direcionado de câncer, distúrbios autoimunes e doenças infecciosas.