Transition-metal-catalyzed cross-coupling reactions between naturally abundant sp3-hybridized carbon centers facilitate access to diverse molecules with complex three-dimensional structures. Organometallic compounds are among one of the most powerful reagents that are broadly used in carbon–carbon bondformations. Although sp2-hybridized organometallic compounds are widely employed in cross-couplings, sp3-hybridized
The present invention relates to stable compositions comprising a sphingosine 1 phosphate (S1P) receptor modulator, suitable for use as a dosage form. The S1P receptor modulators are typically sphingosine analogues, such as 2-substituted 2-amino-propane-1,3-diol or 2-amino-propanol derivatives, e.g. a compound comprising a group of formula Y.
Synthesis and Biophysical Characterization of Fingolimod Derivatives as Cardiac Troponin Antagonists
作者:Laszlo Kondacs、Priyanka Parijat、Alexander J. A. Cobb、Thomas Kampourakis
DOI:10.1021/acsmedchemlett.3c00511
日期:2024.3.14
Calcium binding to cardiactroponinC (cTnC) in the thin filaments acts as a trigger for cardiac muscle contraction. The N-lobe of cTnC (NcTnC) undergoes a conformational change in the presence of calcium that allows for interaction with the switch region of cardiactroponinI (cTnISP), releasing its inhibitory effect on the thin filament structure. The small molecule fingolimod inhibits cTnC–cTnISP
钙与细丝中的心肌肌钙蛋白 C (cTnC) 结合,触发心肌收缩。 cTnC (NcTnC) 的 N 叶在钙存在的情况下会发生构象变化,从而与心肌肌钙蛋白 I (cTnI SP ) 的开关区域相互作用,释放其对细丝结构的抑制作用。小分子芬戈莫德通过其带正电的尾部和 cTnI SP中带正电的残基之间的静电排斥来抑制 cTnC-cTnI SP相互作用,并充当收缩肌丝的钙脱敏剂。在这里,我们研究了芬戈莫德疏水头基的结构-活性关系,结果表明,增加烷基链长度会增加其对 NcTnC 的亲和力及其对 NcTnC-cTnI SP相互作用的抑制作用,而降低灵活性则完全消除了这些影响。引人注目的是,较长的衍生物对 cTnC 的钙亲和力没有影响,这表明它们可以作为更好的抑制剂。