Disclosed are novel compounds and compositions for inhibition of androgen and estrogen receptor signaling, methods for inhibiting androgen signaling, methods for inhibiting estrogen signaling, methods for inhibiting the interaction between a co-regulatory protein and an androgen or estrogen receptor, and methods for treating cancer.
Synthesis and preliminary evaluation steroidal antiestrogen–geldanamycin conjugates
作者:J. Adam Hendricks、Robert N. Hanson、Michael Amolins、John M. Mihelcic、Brian S. Blagg
DOI:10.1016/j.bmcl.2013.03.116
日期:2013.6
Three novel steroidal antiestrogen-geldanamycin conjugates were prepared using a convergent strategy. The antiestrogenic component utilized the 11 beta-(4-functionalized-oxyphenyl) estradiol scaffold, while the geldanamycin component was derived by replacement of the 17-methoxy group with an appropriately functionalized amine. Ligation was achieved in high yield using azide alkyne cyclization reactions. Evaluation of the products against two breast cancer cell lines indicated that the conjugates retained significant antiproliferative activity. (C) 2013 Published by Elsevier Ltd.
Synthesis of a spin-labeled anti-estrogen as a dynamic motion probe for the estrogen receptor ligand binding domain
作者:J. Adam Hendricks、Stefano V. Gullà、David E. Budil、Robert N. Hanson
DOI:10.1016/j.bmcl.2011.12.091
日期:2012.2
The preparation and characterization of a novel nitroxide spin probe based on a steroidal anti-estrogen is described. The probe 5 demonstrated very high binding affinity for both the alpha and beta isoforms of the estrogen receptor-ligand binding domain. EPR spectrometric studies demonstrate conformational constraints for the ligand, consistent with the nitroxyl moiety occupying a position just beyond the receptor-solvent interface. (C) 2012 Elsevier Ltd. All rights reserved.