Design, synthesis, and biological evaluation of potent thiosemicarbazone based cathepsin L inhibitors
作者:G.D. Kishore Kumar、Gustavo E. Chavarria、Amanda K. Charlton-Sevcik、Wara M. Arispe、Matthew T. MacDonough、Tracy E. Strecker、Shen-En Chen、Bronwyn G. Siim、David J. Chaplin、Mary Lynn Trawick、Kevin G. Pinney
DOI:10.1016/j.bmcl.2009.12.090
日期:2010.2
A small library of 36 functionalized benzophenone thiosemicarbazone analogs has been prepared by chemical synthesis and evaluated for their ability to inhibit the cysteine proteases cathepsin L and cathepsin B. Inhibitors of cathepsins L and B have the potential to limit or arrest cancer metastasis. The six most active inhibitors of cathepsin L (IC50 < 85 nM) in this series incorporate a meta-bromo sub-stituent in one aryl ring along with a variety of functional groups in the second aryl ring. These six analogs are selective for their inhibition of cathepsin L versus cathepsin B (IC50 > 10,000 nM). The most active analog in the series, 3-bromophenyl-2'-fluorophenyl thiosemicarbazone 1, also efficiently inhibits cell invasion of the DU-145 human prostate cancer cell line. (C) 2010 Elsevier Ltd. All rights reserved.
Rational Design and Synthesis of Novel Dimeric Diketoacid-Containing Inhibitors of HIV-1 Integrase: Implication for Binding to Two Metal Ions on the Active Site of Integrase
designed and synthesized a series of noveldimeric diketo-containing compounds with the notion that such dimeric compounds may simultaneously bind to two divalent metal ions on the active site of IN. We rationalized that the two diketo subunits separated by uniquely designed linkers can potentially chelate two metal ions that are either provided from one IN active site or two active sites juxtaposed together