Polihidroxiestilbeno and stilbene oxides as antipsoriatic agents and inhibitors of protein kinase.

** compound of formula (See formula) ** where: R is selected from the group consisting of: hydrogen; halogen; alkyl having 1 to 18 carbons; alkenyl with 1 to 18 carbons; alkoxy having 1 to 18 carbons; R1 and R2 are independently selected from the group consisting of: hydrogen; alkyl having 1 to 18 carbons; acyl having 1 to 18 carbons; or pharmacologically acceptable salts thereof.