Sequence-Specific Binding of m-Phenylene Ethynylene Foldamers to a Piperazinium Dihydrochloride Salt
摘要:
Binding properties of a series of isomeric m-phenylene ethynylene oligomers containing short amide sequences to a piperazinium clihydrochloricle salt were investigated by using circular dichroism (CD) measurements. Although these isomeric oligomers exhibited similar helical conformations, high affinity was observed only for one oligomer. This behavior is presumably controlled by the orientation of amino groups of the amide sequence and the folded conformation of the oligomer.
Human sirtuin 2 (SIRT2) is an attractive target molecule for development of drugs to treat neurodegenerative diseases and cancer, because SIRT2 inhibitors have a protective effect against neurodegeneration and an anti-proliferative effect on cancer stem cells. We designed and synthesized a series of benzamide derivatives as SIRT2 inhibitor candidates. Among them, compound 17k showed the most potent SIRT2-inhibitory activity (IC50 = 0.60 mu M), with more than 150-fold selectivity over SIRT1 and SIRT3 isoforms (IC50 > 100 mu M). (C) 2014 Elsevier Ltd. All rights reserved.