Issue 22, 2009

Synthesis of a 1,4-benzodiazepine containing palladacycle with in vitro anticancer and cathepsin B activity

Abstract

The reaction of the five-membered C,N-palladacycle [(L)PdCl]2, where LH = 1-methyl-5-phenyl-1H-1,4-benzodiazepin-2(3H)-one, with 1,2-ethanebis(diphenylphosphine), dppe, leads to the formation of the bridged palladacycle. [Pd2L2(μ-dppe)Cl2] 3, which was characterised in solution by 1H and 31P NMR spectroscopy and in the solid state by X-ray crystallography. Complex 3 was tested in vitro against a number of cell lines. For example, it inhibited K562 leukaemia cells with an IC50 value of 4.3 μM (1 h exposure) and displayed cathepsin B inhibitory action with an IC50 value of 3 μM.

Graphical abstract: Synthesis of a 1,4-benzodiazepine containing palladacycle with in vitro anticancer and cathepsin B activity

Supplementary files

Article information

Article type
Paper
Submitted
28 Oct 2008
Accepted
24 Dec 2008
First published
29 Jan 2009

Dalton Trans., 2009, 4299-4303

Synthesis of a 1,4-benzodiazepine containing palladacycle with in vitro anticancer and cathepsin B activity

J. Spencer, R. P. Rathnam, M. Motukuri, A. K. Kotha, S. C. W. Richardson, A. Hazrati, J. A. Hartley, L. Male and M. B. Hursthouse, Dalton Trans., 2009, 4299 DOI: 10.1039/B819061E

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