电压门控钠通道(Na v s)在神经传递中发挥着重要作用,其功能障碍往往是各种神经系统疾病的原因。Na v 1.3亚型存在于中枢神经系统中,并在外周损伤后上调,但其在人体生理学中的作用尚未完全阐明。报告表明,选择性 Na v 1.3 抑制剂可用作治疗疼痛或神经发育障碍的新疗法。文献中很少有该通道的选择性抑制剂。在这项工作中,我们报告了一系列新的芳基和酰基磺酰胺作为 Na v 1.3 通道状态依赖性抑制剂的发现。使用基于配体的 3D 相似性搜索和随后的命中优化,我们鉴定并制备了一系列 47 种新型化合物,并在QPatch 补丁中的Na v 1.3、Na v 1.5 和 Na v 1.7 通道上测试了它们 -钳夹电生理学测定。八种化合物针对 Na v 1.3 通道失活状态的IC 50值小于 1 μM ,其中一种化合物的 IC 50值为 20 nM,而针对 Na v 1.5 通道和 Na v 1
sulfonamides with carboxylic acid anhydrides in the presence of Lewisacids is described. Several Lewisacids such as BF3·Et2O, ZnCl2, MoCl5, TiCl4, B(C6F5)3, Sc(OTf)3 and I2 were found to catalyze the reactionefficiently to furnish the N-acylated products in good yields undersolvent-freeconditions. The reactions of various sulfonamides were studied with different carboxylic acid anhydrides including the
Amination of Diazocarbonyl Compounds: N–H Insertion under Metal-Free Conditions
作者:Xuesong Luo、Gui Chen、Lin He、Xueliang Huang
DOI:10.1021/acs.joc.6b00233
日期:2016.4.1
Transition-metal-free intermolecular N–H insertion of α-diazocarbonyl compounds is reported. Among the series of nitrogen sources examined, dibenzenesulfonimide was found to be the choice in terms of the yields and the reaction time. Primary mechanistic experiments suggest that a pathway involving a sequence of protonation and nucleophilic substitution was preferred.
<i>N</i>-Acyl DBN Tetraphenylborate Salts as <i>N</i>-Acylating Agents
作者:James E. Taylor、Matthew D. Jones、Jonathan M. J. Williams、Steven D. Bull
DOI:10.1021/jo202647f
日期:2012.3.16
synthesized from 1,5-diazabicyclo[4.3.0]non-5-ene (DBN) and the corresponding acyl chloride in the presence of sodium tetraphenylborate. The salts have been shown to be effective N-acylating agents, reacting with primary amines, secondary amines, and sulfonamides to form the corresponding N-acylated products in good yields. The DBN hydrotetraphenylborate byproduct can be conveniently removed by filtration
Self‐Promoted Glycosylation for the Synthesis of β‐
<i>N</i>
‐Glycosyl Sulfonyl Amides
作者:Patrycja Mała、Christian Marcus Pedersen
DOI:10.1002/ejoc.202100808
日期:2021.11.8
Glycosyl sulfonyl amides are synthesized in a self-promoted N-glycosylation with high β-selectivity and in high yields. Armed and disarmed glycosyldonors of different size and with different protective groups react smoothly with sulfonyl amides, such as protected asparagine derivatives. Influence of solvents, concentration, temperature and stoichiometry is studied.