The putative binding mode of compound 6i in the active site of Jack bean urease.
豆腐脲酶活性部位中化合物6i的推定结合方式。
[EN] THIOSEMICARBAZONES WITH MDR1 - INVERSE ACTIVITY<br/>[FR] THIOSEMICARBAZONES À ACTIVITÉ ANTI-MDR1
申请人:US HEALTH
公开号:WO2012033601A1
公开(公告)日:2012-03-15
Disclosed herein are drug compounds that have MDR-inverse activity and thus are effective against multidrug-resistant cells. Exemplary compounds disclosed herein have the structure;Formula (I). Examples of the disclosed compounds have been found to have, inter alia, efficacy in directly treating multidrug resistant cells, rendering multidrug resistant cells susceptible to other chemotherapeutics and in some instances reversing multidrug resistance.
Synthesis, Activity, and Pharmacophore Development for Isatin-β-thiosemicarbazones with Selective Activity toward Multidrug-Resistant Cells
作者:Matthew D. Hall、Noeris K. Salam、Jennifer L. Hellawell、Henry M. Fales、Caroline B. Kensler、Joseph A. Ludwig、Gergely Szakács、David E. Hibbs、Michael M. Gottesman
DOI:10.1021/jm800861c
日期:2009.5.28
We have recently identified a new class of compounds that selectively kill cells that express P-glycoprotein (P-gp, MDR1), the ATPase efflux pump that confers multidrug resistance on cancer cells. Several isatin-beta-thiosemicarbazones from our initial study have been validated and a range of analogues synthesized and tested. A number demonstrated improved MDR1-selective activity over the lead, NSC73306 (1). Pharmacophores for cytotoxicity and MDR1 selectivity were generated to delineate the structural features required for activity. The MDR1-selective pharmacophore highlights the importance of aromatic/hydrophobic features at the N4 position of the thiosemicarbazone and the reliance on the isatin moiety as key bioisosteric contributors. Additionally, a quantitative structure-activity relationship (QSAR) model that yielded a cross-validated correlation coefficient of 0.85 effectively predicts the cytotoxicity of untested thiosemicarbazones. Together, the models serve as effective approaches for predicting structures with MDR1-selective activity and aid in directing the search for the mechanism of action of 1.
COMPOUNDS WITH MDR1-INVERSE ACTIVITY
申请人:The Government of the United States of America
as represented by the Secretary of the Department
of Health and Human Services