Patent ID: 6903080

Claim:
A method of treating a skin carcinoma which comprises administering to a host having a skin disease an effective amount of a compound formula I. in which R is a linear or branched alkyl radical having 10 to 24 carbon atoms, which can also contain one to three double or triple bonds; R 1 and R 2 independently of each other are hydrogen or a liner, branched or cyclic hydrocarbon radical having 1 to 6 carbon atoms, the hydrocarbon radical being saturated or unsaturated and optionally containing a substituent selected from the group consisting of Cl, OH or NH 2 , wherein two of the hydrocarbon radicals may be bonded together to from a ring; A is a single bond or one of the groups of the formula: —CH 2 —CH 2 —CH 2 —O— (II) —CH 2 —CH 2 —O— (III) in which the groups having formula (II) to (VI) are orientated in such a way that the oxygen atom is bonded to the phosphorus atom of compound (I); X is an oxygen or sulfur atom or NH when A is a single bond, or an oxygen or sulfur atom when A is one of the groups having formula (II) to (IV); y is equal to 0 or a natural number between 1 and 3; and m and n independently of one another are 0 or a natural number selected such that the sum of m+n equals 4.