SYNTHESIS OF DIINDOLYLMETHANES AND INDOLO[3,2-B]CARBAZOLES, COMPOUNDS FORMED THEREBY, AND PHARMACEUTICAL COMPOSITIONS CONTAINING THEM
申请人:Wisconsin Alumni Research Foundation
公开号:US20160039754A1
公开(公告)日:2016-02-11
Described is a method to make diindolylmethanes and indolyl/pyrrolylmethanes, The method includes the steps of contacting an ether comprising an arylpropargyl moiety and an amine-protected, substituted or unsubstituted aniline moiety with a substituted or unsubstituted indol or a substituted or unsubstituted pyrrole, in the presence of a metal-containing catalyst, for a time and at a temperature to cause an annulation/arylation cascade reaction that yields a diindolylmethane or a indolyl/pyrrolylmethane. The resulting compounds are effective to modulate activity of arylhydrocarbon receptors, to inhibit activity of PCSK9, and to stimulate secretion of glucagon-like peptide 1 in mammals.
Rhodium- and Platinum-Catalyzed [4+3] Cycloaddition with Concomitant Indole Annulation: Synthesis of Cyclohepta[<i>b</i>]indoles
作者:Dongxu Shu、Wangze Song、Xiaoxun Li、Weiping Tang
DOI:10.1002/anie.201209266
日期:2013.3.11
Various substituted cyclohepta[b]indoles were prepared from propargylic ethers and dienes by a tandem indole annulation/[4+3] cycloaddition (see scheme; Boc=tert‐butoxycarbonyl). Both acyclic and cyclic dienes participated in the [4+3] cycloaddition to afford tri‐ and tetracyclic products, respectively. Electron‐deficient phosphine or phosphite ligands facilitated the tandem reaction.
通过串联吲哚环化/[4+3]环加成反应,由炔丙醚和二烯制备了各种取代的环庚[ b ]吲哚(参见方案;Boc=叔丁氧基羰基)。无环和环状二烯都参与[4+3]环加成反应,分别生成三环和四环产物。缺电子膦或亚磷酸酯配体促进了串联反应。
Synthesis and biological evaluation of FICZ analogues as agonists of aryl hydrocarbon receptor
作者:Hao Wu、Binkai Liu、Ka Yang、Gabrielle N. Winston-McPherson、Eric D. Leisten、Chad M. Vezina、William A. Ricke、Richard E. Peterson、Weiping Tang
DOI:10.1016/j.bmcl.2020.126959
日期:2020.3
The aryl hydrocarbon receptor (AhR) is a ligand activated transcription factor involved in multiple biological processes including immune cell differentiation, intestinal function and inflammation. Based on the scaffold of naturally occurring AhR ligand 6-formylindolo (3,2-b) carbazole (FICZ, 2), a series of analogues has been designed, synthesized and evaluated by cell-based assays. The structure-activity
Nitrones as Trapping Reagents of α,β-Unsaturated Carbene Intermediates - [1,2]Oxazino[5,4-<i>b</i>]indoles by a Platinum- Catalyzed Intermolecular [3+3] Cycloaddition
作者:Weibo Yang、Tao Wang、Yang Yu、Shuai Shi、Tuo Zhang、A. Stephen K. Hashmi
DOI:10.1002/adsc.201300338
日期:2013.5.17
Boc‐protected 2‐(3‐methoxy‐1‐propynyl)anilines and nitrones in platinum‐catalyzed reactions deliver [1,2]oxazino[5,4‐b]indoles. Twelve examples with yields of 41–95% are reported. Different substituents like nitro, trifluoromethyl, fluoro, bromo, and ester groups are tolerated. With regard to the mechanism, this reaction probably combines an initial intramolecular cyclization/elimination to vinylcarbenoid
在铂催化的反应中,一些容易获得的Boc保护的2-(3-甲氧基-1-丙炔基)苯胺和硝酮可提供[1,2]恶嗪基[5,4- b ]吲哚。报道了十二个产量为41–95%的例子。可以容忍不同的取代基,例如硝基,三氟甲基,氟,溴和酯基。关于机理,该反应可能结合了最初的分子内环化/消除为乙烯基类胡萝卜素物质,以及随后与硝酮的逐步的分子间[3 + 3]环加成反应。
Platinum(II)-Catalyzed Generation and [3+2] Cycloaddition Reaction of α,β-Unsaturated Carbene Complex Intermediates for the Preparation of Polycyclic Compounds
Pt(II)-catalyzed generation of unsaturated carbene complex intermediates from various propargyl ether derivatives based on electrophilic activation of alkynes was realized. These in situ generated unsaturated carbene complexes undergo [3+2] cycloaddition reaction with various vinyl ethers, leading to efficient formation of indoles, naphthols, and benzofuran fused with a five-membered ring in high yields