Diindolylmethane Derivatives: Potent Agonists of the Immunostimulatory Orphan G Protein-Coupled Receptor GPR84
作者:Thanigaimalai Pillaiyar、Meryem Köse、Katharina Sylvester、Heike Weighardt、Dominik Thimm、Gleice Borges、Irmgard Förster、Ivar von Kügelgen、Christa E. Müller
DOI:10.1021/acs.jmedchem.6b01593
日期:2017.5.11
assays, the most potent agonists being di(5-fluoro-1H-indole-3-yl)methane (38, PSB-15160, EC50 80.0 nM) and di(5,7-difluoro-1H-indole-3-yl)methane (57, PSB-16671, EC50 41.3 nM). In β-arrestin assays, SARs were different, indicating biased agonism. The new compounds were selective versus related fatty acid receptors and the arylhydrocarbon receptor. Selected compounds were further investigated and found
对于g我蛋白偶联受体GPR84,它是由(羟基)脂肪酸,激活的免疫细胞上高表达。最近,3,3'-二吲哚基甲烷被鉴定为杂环类非脂质GPR84激动剂。我们在微波辐射下通过吲哚与甲醛在水中的缩合反应合成了多种二吲哚甲烷衍生物。在人GPR84上的cAMP和β-arrestin检测中对产品进行了评估。构效关系(SARs)很陡。在cAMP分析中,在吲哚环的5和/或7位带有小的亲脂性残基的3,3'-二吲哚基甲烷显示出最高的活性,最有效的激动剂是di(5-fluoro-1 H -indole-3-甲烷)(38,PSB-15160,EC 5080.0 nM)和二(5,7-二氟-1 H-吲哚-3-基)甲烷(57,PSB-16671,EC 50 41.3 nM)。在β-arrestin检测中,SAR有所不同,表明激动作用存在偏倚。新化合物对相关的脂肪酸受体和芳基烃受体具有选择性。进一步研究了选定的化合物,发现与前
Decarboxylative Coupling Reaction of 2‐(1
<i>H</i>
‐Indol‐3‐yl)acetic Acids with Indole, Azaindole, Benzimidazole and Indazole Derivatives
作者:Thanigaimalai Pillaiyar、Muhammad Uzair、Saif Ullah、Gregor Schnakenburg、Christa E. Müller
DOI:10.1002/adsc.201900688
日期:2019.9.17
indole alkaloids that exhibit anti‐inflammatory and anti‐cancer effects. Herein, we report on a new, mild and efficient copper(II)‐promoted decarboxylative coupling reaction of 2‐(1H‐indol‐3‐yl)acetic acid derivatives (1 a–h) with a variety of (substituted) indoles (2 a–t) yielding (un)symmetrically substituted DIMs (3 a–z, 3 aa–ai). Reaction of 2‐(1H‐indol‐3‐yl)acetic acid (1 a) with 7‐azaindole led to
3,3'-二吲哚基甲烷(DIM)是一类重要的吲哚生物碱,具有抗炎和抗癌作用。在此,我们报道了一种新的,温和有效的,由铜(II)促进的2-(1 H-吲哚-3-基)乙酸衍生物(1 a – h)与多种(取代的)吲哚的脱羧偶联反应(2 a – t)产生(非)对称取代的DIM(3 a – z,3 aa – ai)。2-(1 H-吲哚-3-基)乙酸(1 a)与7-氮杂吲哚的反应生成3,3 '连接的DIM类似物5 d时,4,5和6氮杂吲哚与苯并咪唑在N 1氮原子上反应。1 a与1 H-吲唑反应生成1和2-取代的吲唑衍生物的混合物。这种新方法可以大规模合成具有生物活性的DIM。
General Synthesis of Unsymmetrical 3,3′-(Aza)diindolylmethane Derivatives
作者:Thanigaimalai Pillaiyar、Ewelina Gorska、Gregor Schnakenburg、Christa E. Müller
DOI:10.1021/acs.joc.8b01349
日期:2018.9.7
Diindolylmethane (DIM) and its derivatives have recently been in the focus of interest due to their significant biological activities, specifically in cancer prevention and therapy. Molecular targets of DIM have been identified, e.g., the immunostimulatory G protein-coupled receptor GPR84. However, most of the reported and investigated DIM derivatives are symmetrical because general methods for obtaining unsymmetrical
A Curtius-like rearrangement of hydroxamates to isocyanates was discovered. This reaction was initiated from an iron(II)–nitrenoid complex, which was generated by the iron(II)-catalyzed cleavage of N–O bonds of functionalized hydroxamates. To demonstrate the efficiency of this new Curtius-like rearrangement in synthetic chemistry, a biomimetic strategy for the one-pot preparation of bisindolylmethanes
Photocatalytic Redox-Neutral Approach to Diarylmethanes
作者:Guozhe Guo、Yong Yuan、Xiazhen Bao、Xuehui Cao、Tongzhi Sang、Jiayuan Wang、Congde Huo
DOI:10.1021/acs.orglett.1c02523
日期:2021.9.3
reaction of indole-3-acetic acid NHPI esters with indoles using a Ru photosensitizer to deliver a wide range of symmetrical and unsymmetrical 3,3′-bisindolylmethane derivatives. Furthermore, the reaction is readily adapted to the preparation of a wide variety of diarylmethane derivatives.