RETRACTED: Design, synthesis, structure-activity relationship and kinase inhibitory activity of substituted 3-methyl-1-phenyl-1H-pyrazolo[3,4-d]pyrimidin-4-ones.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the author who confirmed that the purity of some of the described compounds is below acceptable standards and thus the biochemical results reported in the paper have no validity.