作者:Jeffrey G. Varnes、Thomas Gero、Shan Huang、R. Bruce Diebold、Claude Ogoe、Paul T. Grover、Mei Su、Prasenjit Mukherjee、Jamal Carlos Saeh、Terry MacIntyre、Galina Repik、Keith Dillman、Kate Byth、Daniel John Russell、Stephanos Ioannidis
DOI:10.1016/j.bmcl.2014.05.036
日期:2014.7
Structural modifications of the left-hand side of compound 1 were identified which retained or improved potent binding to Bcl-2 and Bcl-x(L) in in vitro biochemical assays and had strong activity in an RS4;11 apoptotic cellular assay. For example, sulfoxide diastereomer 13 maintained good binding affinity and comparable cellular potency to 1 while improving aqueous solubility. The corresponding diastereomer (14) was significantly less potent in the cell, and docking studies suggest that this is due to a stereochemical preference for the R-S versus S-S sulfoxide. Appending a dimethylaminoethoxy side chain (27) adjacent to the benzylic position of the biphenyl moiety of 1 improved cellular activity by approximately threefold, and this activity was corroborated in cell lines overexpressing Bcl-2 and Bcl-x(L). (C) 2014 Elsevier Ltd. All rights reserved.