Thiophene derivatives and optical elements using the same
申请人:FUJIFILM Corporation
公开号:EP1394158B1
公开(公告)日:2007-03-21
New Insights into the SAR and Binding Modes of Bis(hydroxyphenyl)thiophenes and -benzenes: Influence of Additional Substituents on 17β-Hydroxysteroid Dehydrogenase Type 1 (17β-HSD1) Inhibitory Activity and Selectivity
17 beta-Hydroxystcroid dehydrogenase type 1 (17 beta-HSD1) is responsible for the catalytic reduction of weakly active E1 to highly potent E2. E2 stimulates the proliferation of hormone-dependent diseases via activation of the estrogen receptor alpha (ER alpha). Because of the overexpression of 17 beta-HSD1 in mammary tumors, this enzyme should be an attractive target for the treatment of estrogen-dependent pathologies. Recently, we have reported on a series of potent 17 beta-HSD1 inhibitors: bis(hydroxyphenyl) azoles, thiophenes, and benzenes. In this paper, different substituents are introduced into the core structure and the biological properties of the corresponding inhibitors are evaluated. Computational methods and analysis of different X-rays of 17 beta-HSD1 lead to identification of two different binding modes for these inhibitors. The fluorine compound 23 exhibits an IC50 of 8 nM and is the most potent nonsteroidal inhibitor described so far. It also shows a high selectivity (17 beta-HSD2, ER alpha) and excellent pharmacokinetic properties after peroral application to rats.
Effect of Thiophene Spacer Position in Carbazole‐Based Dye‐Sensitized Solar Cells on Photophysical, Electrochemical and Photovoltaic Properties
The synthesis, photophysical and electrochemical properties, and photovoltaic performances in dye-sensitizedsolarcells (DSSCs) of five new metal-free organic sensitizers with a carbazole moiety as the electrondonor are reported. The compounds contain a thiophene at various positions and a cyanoacrylic acid unit as the electron acceptor. The position of the thiophene moiety affected both the photophysical