Structure, properties and cytostatic activity of tributyltin aminoarylcarboxylates
摘要:
Properties of butyltin complexes [Sn(C4H9-n)(3){OOCC6H3(NH2)(2)-3,4}](n) (1), [Sn(C4H9-n)(3){OOCC6H3(NH2)2-3,5}] (2), [Sn(C4H9-n)(3)}OOCC6H4N H4N=NC6H4N(CH3)(2)-4}] (3) and [Sn(C6H5)(3){OOCC6H3(NH2)(2)-3,5)}](n) (4) have been investigated. H-1, C-13 and Sn-119 NMR spectra indicate that the compounds in chloroform are distorted tetrahedral and in strongly coordinating solvents trigonal-bipyramidal complexes. Structure of complex 3 has been determined by X-ray crystallography. This compound adopts trigonal bipyramidal structure with bridging carboxylato ligand bound asymmetrically with tin atoms in axial positions. The complexes are effective cytostatic agents. (C) 2003 Elsevier B.V. All rights reserved.