作者:Sachiko Komatsu、Ayaka Yaguchi、Kouwa Yamashita、Masao Nagaoka、Mitsuteru Numazawa
DOI:10.1016/j.steroids.2009.06.001
日期:2009.11
Inhibition of aromatase is an efficient approach for the prevention and treatment of breast cancer. New 6 beta,19-bridged steroid analogs of androstenedione, 6 beta,19-epithio- and 6 beta,19-methano compounds 11 and 17, were synthesized starting from 19-hydroxyand rostenedione (6) and 19-formylandrost-5-ene-3 beta,17 beta-yl diacetate (12), respectively, as aromatase inhibitors. All of the compounds including known steroids 6 beta,19-epoxyandrostenedione (4) and 6 beta,19-cycloandrostenedione (5) tested were weak to poor competitive inhibitors of aromatase and, among them, 6 beta,19-epoxy steroid 4 provided only moderate inhibition (K-i: 2.2 mu M). These results show that the 6 beta,19-bridged groups of the inhibitors interfere with binding in active site of aromatase. (C) 2009 Elsevier Inc. All rights reserved.