| abstract |
Compounds of formulae (I) or (II): wherein R is a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aralkyl aralkenyl, or aralkynyl group, that optionally includes at least one heteroatom in its carbon skeleton, and R1 and R2 are H, or an -OR3 group in which R3 is a substituted or unsubstituted alkyl, alkenyl, alkynyl, aryl, aralkyl aralkenyl, or aralkynyl group containing 4-12 carbon atoms, that optionally includes at least one heteroatom in its carbon skeleton, and R1 and R2 cannot both be H, and their use in therapeutic methods. |