Thienopyrazoles, their preparation, pharmaceutical compositions comprising these compounds, and their pharmaceutical uses in the treatment of disease states capable of being modulated by the inhibition of the protein kinases, in particular interleukin-2 inducible tyrosine kinase (ITK).
of the spectroscopic Hammett equation and the Hammett–Brown equation. Excellent correlations of these linear free energy relationships were found, when the σp values of the Hammett equation, which summarize inductive, mesomeric and field effects, were replaced to the Hammett–Brown σp+ and σp− values which also take direct conjugation into account. We studied solvent effects on the spectroscopic properties
制备并测试了一系列在噻吩的 2/2'-位具有全氟环戊烯主链和甲氧基甲基(MOM)的双(噻吩基)乙烯(BTE)。5/5'位的取代模式多种多样,涵盖从给电子到吸电子的范围。利用光谱Hammett方程和Hammett-Brown方程研究了通过可逆6π-电环化和环化逆转相互转化的开环和闭环异构体吸收波长的取代基效应。当总结感应效应、介观效应和场效应的哈米特方程的σ p值替换为也采用直接共轭的哈米特-布朗σ p +和σ p −值时,发现这些线性自由能关系具有极好的相关性考虑到。我们研究了溶剂对光谱特性的影响,并将 BTE 嵌入聚甲基丙烯酸甲酯 (PMMA) 涂层中以检查其抗疲劳性。通过我们的研究,BTE 的光谱特性可以通过改变取代模式来调整,以达到切换过程所需的激发波长。