The invention relates to a compound of formula A-R—X or pharmaceutically acceptable salts thereof which can be used for producing a pharmaceutical preparation suitable for preventing or treating cancerous diseases, pathological consequences of alcohol abuse, viral hepatitis, steatohepatitis, acute and chronic pancreatitis, toxic renal diseases, hepatic insulin resistance in diabetes mellitus, hepatic damage in Wilson's disease and sideroses and/or ischaemic reperfusion damage, as an antidote against environmental toxins and medicament intoxication in order to extend the resistance time of medicaments in organisms, or for combating toxic side effects in the administration of chemotherapeutics. In the formula R is an aliphatic or aromatic C6- to C40-hydrocarbon radical which has a hydrophilic end A, and X is a radical having at least one free electron pair of a carbon or heteroatom and/or π-electrons.
