Steroidal silicon side-chain analogs as potential antifertility agents
摘要:
A number of silicon-substituted analogues of ethynylestradiol that exhibit modified and enhanced biological activities have been synthesized. Particularly noteworthy are a group of [(trialkylsilyl)ethynyl]estradiol analogues that exhibit high antifertility potency and markedly reduced estrogenic activity. The best compounds synthesized are 17 alpha-[(triethylsilyl)ethynyl]estradiol (5) and 17 alpha-[(tert-butyldimethylsilyl)ethynyl]estradiol (33), which show a separation of antifertility from estrogenic activity in the rat. The results of structure-activity studies indicate a good correlation between the observed biological activities and the calculated van der Waals volumes of the three variable silicon substituents.
Rhenium-mediated dehydrogenative silylation and highly regioselective hydrosilylation of nitrile substituted olefins
作者:Hailin Dong、Yanfeng Jiang、Heinz Berke
DOI:10.1016/j.jorganchem.2013.10.052
日期:2014.1
(I) complex [Re(CH3CN)3Br2(NO)] catalyzes the homogeneous hydrosilylation of a variety of substituted acrylonitriles, which were converted into the corresponding silyl-substituted alkanes with high regioselectivity of up to 94%. The products were analyzed by 1H NMR and GC–MS. A rhenium specific mechanism is proposed for the hydrosilylation of olefins.
complex(I)络合物[Re(CH 3 CN)3 Br 2(NO)]催化多种取代的丙烯腈的均相氢化硅烷化反应,这些丙烯腈被转化为相应的甲硅烷基取代的烷烃,具有高达94%的区域选择性。产物通过1 H NMR和GC-MS分析。提出了specific特异的机理用于烯烃的氢化硅烷化。
The Effect of Polar Substituents on the Alkali-catalyzed Hydrolysis of Triorganosilanes<sup>1</sup>
作者:Omar W. Steward、Ogden R. Pierce
DOI:10.1021/ja01469a033
日期:1961.4
BERTRAND, M. J.;CARAZZATO, D.;SARRASIN, B., J. CHROMATOGR. SCI., 28,(1990) N, C. 194-199