The present invention relates to the furanochalcone class of compounds of general formula A. The present invention particularly relates to the synthesis of furanochalcones and their CYP1A1, CYP1A2 and CYP1B1 inhibitory activity. In addition, the invention relates to the prevention or treatment of cancer caused by polyaromatic hydrocarbons (PAHs), 4-nitroquinoline-1-oxide, and N-nitroso-N- methylurea, heterocyclic amines, estrogen and 17ß-estradiol, resulting from the inhibition of CYP1A1, CYP1A2 and CYP1B1 enzymes.