André P. Ferreira, J. F. C. D. Silva, M. Duarte
Sep 2, 2009
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Journal
Organometallics
Abstract
The incorporation of organometallic moieties into the structure of known active drugs to improve their therapeutic properties has gained considerable interest in recent years. The benzo[b]thiophene derivative raloxifene is a selective estrogen receptor modulator (SERM) that has been found to decrease breast cancer risk in postmenopausal women compared to placebo. The current data suggest that, in the postmenopausal setting, raloxifene may have the benefits of the widely used tamoxifen with fewer side effects. As part of a program designed toward the synthesis and biological screening of organometallic benzo[b]thiophene derivatives inspired by the structure of raloxifene, we have prepared a series of 2-benzoyl-3-ferrocenylbenzo[b]thiophenes where the benzoyl substituent contains terminal tertiary alkylamino groups, expected to ensure affinity to the estrogen receptor. The synthetic strategy and full characterization (NMR, MS, X-ray diffraction, cyclic voltammetry) of the new ferrocenylbenzo[b]thiophenes is...