PHARMACEUTICAL AGENT HAVING VIRAL ACTION OR ANTIVIRAL ACTION, PHOSPHOLIPID DERIVATIVE AND METHOD OF ITS PREPARATION

Use of phospholipid derivatives of the formula I in which X denotes a valence bond, an oxygen or sulphur atom, a sulphinyl, sulphonyl, aminocarbonyl, carbonylamino or ureido group -NH-CO-NH- or a C3-C8-cycloalkylene or phenylene radical, Y denotes an oxygen or sulphur atom, R denotes a hydrogen atom, a straight-chain or branched, saturated or unsaturated alkyl radical having 1-18 carbon atoms, which is optionally mono- or polysubstituted by phenyl, halogen, C1-C4-alkoxy, C1-C4-alkylmercapto, C1-C4-alkoxycarbonyl, C1-C4-alkanesulphinyl or C1-C4-alkanesulphonyl groups, R denotes a straight-chain or branched, saturated or unsaturated alkylene chain having 1-18 carbon atoms, which is optionally mono- or polysubstituted by halogen, phenyl, C1-C4-alkoxy, C1-C4-alkoxycarbonyl, C1-C4-alkylmercapto, C1-C4-alkanesulphinyl or C1-C4-alkanesulphonyl groups, R denotes an optionally mono- or polysubstituted, straight-chain or branched, saturated or unsaturated alkylene chain having 2-8 carbon atoms, R denotes a straight-chain or branched alkylene chain having 2-4 carbon atoms, R are identical or different and denote hydrogen or a C1-C6-alkyl group and n denotes the numbers 0, 1 or 2, their pharmacologically acceptable salts and optical isomers for the preparation of pharmaceuticals having antiviral action, and also novel phospholipid derivatives.