Small molecule compounds and compositions containing said compounds useful for inhibiting signaling by certain Toll-like receptors (TLRs), particularly TLR9, are provided. The compounds and compositions can be used to inhibit immune responses, including unwanted immune responses in particular. Compounds, compositions, and methods are provided to treat a variety of conditions involving unwanted immune responses, including for example autoimmune disease, inflammation, transplant rejection, and sepsis.
An efficient synthesis of iminoquinones by a chemoselective domino ortho-hydroxylation/oxidation/imidation sequence of 2-aminoaryl ketones
作者:Selvaraj Chandrasekar、Govidasamy Sekar
DOI:10.1039/c5ob02659h
日期:——
An efficient chemoselective dominooxidative homocoupling of 2-aminoaryl ketones in the presence of 2-iodoxybenzoic acid (IBX) for the synthesis of iminoquinone has been developed. The domino reaction proceeds via three consecutive steps, such as domino ortho-hydroxylation of 2-aminoaryl ketones, oxidation of a phenol derivative to benzoquinone and dimerization through imine formation to yield iminoquinone
The first Lewis acid-catalyzed intramolecular interrupted Nazarov cyclization of 1,4-pentadien-3-ols is described.
第一个由Lewis酸催化的1,4-戊二烯-3-醇分子内中断的Nazarov环化反应被描述了。
Straightforward Synthesis of Novel 4-Styrylquinolines/4-Styrylquinolin-2-ones and 9-Styryldihydroacridin-1(2H)-ones from Substituted 2′-Aminochalcones
作者:Alirio Palma、Angie Meléndez、Esteban Plata、Diego Rodríguez、Diana Ardila、Sergio A. Guerrero、Lina M. Acosta、Justo Cobo、Manuel Nogueras
DOI:10.1055/s-0039-1707985
日期:2020.6
approach, new series of these compounds were straightforwardly synthesized in high yields starting from synthetically available 2′-aminochalcones and 1,3-dicarbonyl compounds in glacial acetic acid as a catalyst via the Friedländer reaction. Our approach also offers an expeditious way to access novel molecular hybrids in whose structures styryl and chalcone fragments are attached at the C4 and C3 positions
for the synthesis of [1,4]thiazino[4,3-a]indole derivatives using sodium chlorodifluoroacetate (ClCF2CO2Na) and elemental sulfur as the difluoromethylthiolating reagent system has been developed. Three-component reactions of 2′-aminochalcones, sulfur, and ClCF2CO2Na under basic conditions using TEMPO as the oxidant afforded [1,4]thiazino[4,3-a]indol-10-ones containing a difluoromethyl thioether moiety
已经开发了一种使用氯二氟乙酸钠 (ClCF 2 CO 2 Na) 和元素硫作为二氟甲基硫醇化试剂系统合成 [1,4] 噻嗪并 [4,3- a ] 吲哚衍生物的有效方法。在碱性条件下,使用 TEMPO 作为氧化剂,2'-氨基查耳酮、硫和 ClCF 2 CO 2 Na 的三组分反应得到含有二氟甲基硫醚部分的[1,4] 噻嗪基 [4,3 - a ] 吲哚-10-酮收益良好。在顺序转化过程中选择性地形成四个键,包括一个 C-N、两个 C-S 和一个 C-C 键。