The invention relates to compounds of formula (II) wherein ring A is a phenyl, pyridine, pyrimidine or pyrazine ring, W and X are carbon or nitrogen, Y is oxygen or sulfur, R 0 is different from hydrogen, R x is -(C="O")R 1 or cyano; R 1 is hydrogen, optionally substituted hydroxy or optionally substituted amino, and the other substituents are as described in the specification. The invention further relates to methods of synthesis of such compounds, to pharmaceutical compositions containing compounds of formula (II), to the use of a compounds of formula (II) for the preparation of a pharmaceutical composition for the treatment of neoplastic and autoimmune diseases, and to methods of treatment of neoplastic and autoimmune diseases using compounds of formula (II) or pharmaceutical compositions containing same.