Substituent effects on the reaction of trityl chlorides with Grignard reagents
作者:Ryan E. Oyler、Benjamin E. Ketz、Timothy E. Glass
DOI:10.1016/s0040-4039(00)01470-2
日期:2000.10
The result of the substitution of trityl chlorides with Grignardreagents was found to be highly dependent on the solvent and the nature of the substituents on the trityl group. In THF, electron donating substituents were found to give high yields of Grignard addition while electron withdrawing substituents were found to give mostly reduction to the corresponding triphenyl methane via hydride abstraction
The Dissociation of Hexaarylethanes. XVI.<sup>1</sup> Alkyl and Halogen Derivatives
作者:C. S. Marvel、H. W. Johnston、J. W. Meier、T. W. Mastin、John Whitson、Chester M. Himel
DOI:10.1021/ja01234a023
日期:1944.6
Novel Inhibitors of the Gardos Channel for the Treatment of Sickle Cell Disease
作者:Grant A. McNaughton-Smith、J. Ford Burns、Jonathan W. Stocker、Gregory C. Rigdon、Christopher Creech、Susan Arrington、Tara Shelton、Lucia de Franceschi
DOI:10.1021/jm070663s
日期:2008.2.1
Sickle cell disease (SCD) is a hereditary condition characterized by deformation of red blood cells (RBCs). This phenomenon is due to the presence of abnormal hemoglobin that polymerizes upon deoxygenation. This effect is exacerbated when dehydrated RBCs experience a loss of both water and potassium salts. One critical pathway for the regulation of potassium efflux from RBCs is the Gardos channel, a calcium-activated potassium channel. This paper describes the synthesis and biological evaluation of a series of potent inhibitors of the Gardos channel. The goal was to identify compounds that were potent and selective inhibitors of the channel but had improved pharmacokinetic properties compared to 1, Clotrimazole. Several triarylamides such as 10 and 21 were potent inhibitors of the Gardos channel (IC50 of < 10 nM) and active in a mouse model of SCD. Compound 21 (ICA-17043) was advanced into phase 3 clinical trials for SCD.