Relay Catalysis To Synthesize β-Substituted Enones: Organocatalytic Substitution of Vinylogous Esters and Amides with Organoboronates
作者:Sasha Sundstrom、Thien S. Nguyen、Jeremy A. May
DOI:10.1021/acs.orglett.9b04584
日期:2020.2.21
Organocatalysis was shown to facilitate conjugate additions to vinylogousesters and amides for the first time. Subsequent elimination of a β-alcohol or amine provided π-conjugated β-substituted enones. Remarkably, nucleophile addition to the electron-rich vinylogous substrates is more rapid than classical enones, forming monosubstituted products. A doubly organocatalytic (organic diol and methyl aniline)
A General Organocatalytic Enantioselective Malonate Addition to α,β-Unsaturated Enones
作者:Veit Wascholowski、Kristian Rahbek Knudsen、Claire E. T. Mitchell、Steven V. Ley
DOI:10.1002/chem.200800673
日期:2008.7.7
A general enantioselective organocatalytic conjugate addition procedure of a variety of malonates to alpha,beta-unsaturated enone systems is presented. The reaction is efficiently catalysed by the pyrrolidinyl tetrazole catalyst 1. Cyclic, acyclic and aromatic enones can be used and the reaction with ethyl malonates 3 b provides the Michaeladdition products in high yields with good to excellent enantioselectivities
Selective Wittig Reactions for the Synthesis of Variously Substituted 2-Vinylindoles
作者:Manfred Eitel、Ulf Pindur
DOI:10.1055/s-1989-27253
日期:——
Three selective variants of the Wittig reaction for the syntheses of 2-vinylindoles are described. The reactions are relatively easy to perform, exhibit E-selectivity, and are characterized by a good flexibility with regard to the functional groups present in the vinyl moiety.
[EN] NOVEL BENZOPYRAN DERIVATIVE COMPOUND, PREPARATION METHOD THEREFOR, AND ANTICANCER COMPOSITION COMPRISING SAME<br/>[FR] NOUVEAU COMPOSÉ DÉRIVÉ DE BENZOPYRANE, SON PROCÉDÉ DE PRÉPARATION ET COMPOSITION ANTICANCÉREUSE LE COMPRENANT<br/>[KO] 새로운 벤조피란 유도체 제조방법 및 이를 포함하는 항암제 조성물
申请人:UNIV INDUSTRY FOUNDATION YONSEI UNIV
公开号:WO2022158624A1
公开(公告)日:2022-07-28
본 발명은 ANO1 (Anoctamin 1) 저해 활성을 갖는 신규한 벤조피란 유도체 및 이의 용도에 관한 것이다. 본 발명에 따른 신규 벤조벤조피란 유도체 또는 이의 약학적으로 허용가능한 염은 ANO1에 대한 우수한 저해 활성을 나타내는 바, ANO1이 과발현된 암인 전립선암, 대장암, 식도편평상피세포암, 췌장암, 두경부암 및 유방암의 예방 또는 치료에 있어서, 보다 근본적으로 접근하여 타겟 치료할 수 있을 것으로 기대된다.
Gold-catalyzed benzannulations of 2-alkenylindoles with alkynes: a protecting-group-free regioselective approach to carbazoles
作者:Pathan Mosim Amin、Weilin Wang、Chao Wang、Junrui Zhou、Youliang Wang
DOI:10.1039/d4cc00176a
日期:——
A gold(I)-catalyzed protecting-group-free benzannulation approach to functionalized NH-carbazoles was accomplished via the hydroarylation of alkynes with 2-alkenylindoles. A broad spectrum of terminal and internal alkynes and 2-alkenylindoles successfully participated in this annulation reaction. The protocolefficiently enabled the formation of substituted NH-carbazoles with moderate to specific regioselectivities
通过炔烃与 2-烯基吲哚的加氢芳基化,实现了金 ( I ) 催化的无保护基苯并环化方法,得到功能化 NH-咔唑。多种末端炔烃和内部炔烃以及 2-烯基吲哚成功地参与了该环化反应。该方案有效地形成了具有中等至特定区域选择性的取代 NH-咔唑。该协议的合成实用性通过各种后功能化得到了证明。