Synthesis of N4 donor macrocyclic Schiff base ligands and their Ru (II), Pd (II), Pt (II) metal complexes for biological studies and catalytic oxidation of didanosine in pharmaceuticals
A series of tetraaza (N(4) donor) macrocyclicligands (L(1)-L(4)) were derived from the condensation of o-phthalaldehyde (OPA) with some substituted aromatic amines/azide, and subsequently used to synthesize the metalcomplexes of Ru(II), Pd(II) and Pt(II). The structures of macrocyclicligands and their metalcomplexes were characterized by elemental analyses, IR, (1)H &(13)C NMR, mass and electronic