Process for the production of antitumour pharmaceutical compositions using push-pull butadienes, compounds and uses thereof

3) (canceled)

5)-14) (canceled)

15) Process to prepare the formula compound

• by means of push-pull butadienes characterized by the fact that it comprises a mixture consisting of 1.388 mmol 2-cyan-3-[2-(3-methylbut-2-enyloxy)-phenyl]-but-2-en-nitrile and 1.388 mmol of carbon disulfide in 5 mL of absolute dimethylformamide, stir the mixture at room temperature under argon atmosphere, added 0.002776 mol of hydride, stir under argon atmosphere for eight hours, and afterwards stir 2.77 mmol (173 μL) of ethyl iodide under agitation, the mixture being stirred for 4 hours and poured into cold water.

16) (canceled)

18) (canceled)

20)-49) (canceled)

50) Compound, characterized by being 2-[2-(3-metilbut-2-eniloxi)-phenyl]-4,4-bis-methylsulfanyl-buta-1,3-dien-1,1-dicarbonitrile and having the structural formula

51)-59) (canceled)

61)-62) (canceled)