“…Also, 1-[1-(heterocyclic)ethylidene]thiosemicarbazides and their metal complexes have been investigated as potential anticancer agents (Finch et al, 2000;Soares et al, 2012;Serda et al, 2012). On the other hand, ethylidenethiosemicarbazides are reactive building blocks for the construction of bioactive heterocycles, such as: [1,2,3]-thiadiazoles (El-Sadek et al, 2012], imidazolinones (Thanusu et al, 2010), thiazoles (Chimenti et al, 2010;Abdel-Gawad et al, 2010;Vazzana et al, 2004;Vigato & Tamburini, 2004), and thiazolidin-4-ones (Abdel-Gawad et al, 2010). It has been demonstrated that the azomethine group is accountable for biological activities shown by various types of Schiff bases (Vazzana et al, 2004;Vigato & Tamburini, 2004).…”