Design, synthesis, and biological evaluation of novel naphthoquinone derivatives with CDC25 phosphatase inhibitory activity
摘要:
CDC25 dual-specificity phosphatases are essential key regulators of eukaryotic cell cycle progression and the CDC25A and B isoforms are over-expressed in different tumors and related cancer cell lines. CDC25s are now considered to be interesting targets in the search for novel anticancer agents. We describe new compounds derived from vitamin K-3 that inhibit CDC25B activity with IC50 values in the low micromolar range. These naphthoquinone derivatives also display antiproliferative activity on HeLa cells as expected for CDC25 inhibitors and inhibit cell growth in a clonogenic assay at submicromolar concentrations. They increase inhibitory tyrosine 15 phosphorylation of CDK and induce the cleavage of PARP, a hallmark of apoptosis. (c) 2005 Elsevier Ltd. All rights reserved.
Copper(II) complexes of 2-(1,4-dihydro-2-hydroxy-1,4-dioxonaphthalen-3-ylthio) acetic acid
作者:W. Marjit Singh、Jubaraj B. Baruah
DOI:10.1016/j.inoche.2010.04.012
日期:2010.8
Selective carbon-sulphur bond cleavage reaction of (3-mercapto-1,4-dioxo-1,4-dihydro-naphthalen-2-ylsulfanyl) acetic acid by copper(II) nitrate tetrahydrate at room temperature to form copper(II) complex of 2-(1,4-dihydro-2-hydroxy-1,4-dioxonaphthalen-3-ylthio) acetic acid is described. (C) 2010 Elsevier B.V. All rights reserved.