title: Anti-tumor pyrimidinylpiperazines bind to the prosurvival Bcl-2 protein family member Bcl-XL.
abstract: Overexpression of prosurvival or underexpression of pro-death Bcl-2 family proteins can lead to cancer cell resistance to chemotherapy and radiation treatment. Inhibition of the prosurvival Bcl-2 family proteins has become a strategy for cancer therapy and inhibitors are currently being evaluated in the clinic both as single agents and in combination with established drugs. Here we describe the design, synthesis, and evaluation of pyrimidylpiperazines that were discovered to be inhibitors of the prosurvival Bcl-2 protein family member Bcl-XL. This study identified compound 21 which demonstrated a GI(50) value of 8.4 μM against A549 lung adenocarcinoma cells and a binding affinity K(i) value for Bcl-XL of 127 nM.
authors.affiliation: Department of Pharmaceutics & Medicinal Chemistry, Thomas J. Long School of Pharmacy and Health Sciences, University of the Pacific, Stockton, CA 95211, USA.
authors.forename: Hassan M
authors.initials: HM
authors.lastname: Shallal
authors.forename: Jesika S
authors.initials: JS
authors.lastname: Faridi
authors.forename: Wade A
authors.initials: WA
authors.lastname: Russu
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry; D001665:Binding Sites; D045744:Cell Line, Tumor; D002470:Cell Survival; D018360:Crystallography, X-Ray; D055808:Drug Discovery; D004791:Enzyme Inhibitors / Q000138:chemical synthesis* / Q000737:chemistry; D006801:Humans; D015394:Molecular Structure; D010879:Piperazines / Q000138:chemical synthesis* / Q000737:chemistry; D011485:Protein Binding; D019253:Proto-Oncogene Proteins c-bcl-2; D051020:bcl-X Protein / Q000378:metabolism*
chemical_list: D000970:Antineoplastic Agents; D004791:Enzyme Inhibitors; D010879:Piperazines; D019253:Proto-Oncogene Proteins c-bcl-2; D051020:bcl-X Protein