Aromatic CC Bonds as Dipolarophiles: Facile Reactions of Uncomplexed Electron-Deficient Benzene Derivatives and Other Aromatic Rings with a Non-Stabilized Azomethine Ylide
作者:Sunyoung Lee、Sonia Diab、Pierre Queval、Muriel Sebban、Isabelle Chataigner、Serge R. Piettre
DOI:10.1002/chem.201201238
日期:2013.5.27
Non‐stabilized azomethineylide 4 a reacts smoothly at room temperature with a variety of uncomplexed aromatic heterocycles and carbocycles on the condition that the ring contains at least one or two electron‐withdrawing substituents, respectively. Aromatic substrates, including pyridine and benzene derivatives, participate as 2 π components in [3+2] cycloaddition reactions and interact with one, two
[EN] AMINO COMPOUNDS FOR TREATMENT OF MEDICAL DISORDERS<br/>[FR] COMPOSÉS AMINO POUR LE TRAITEMENT DE TROUBLES MÉDICAUX
申请人:ACHILLION PHARMACEUTICALS INC
公开号:WO2017035351A1
公开(公告)日:2017-03-02
Compounds, methods of use, and processes for making inhibitors of complement Factor D comprising Formula I, or a pharmaceutically acceptable salt or composition thereof wherein R12 or R13 on the A group is an amino substituent (R32) are provided. The inhibitors of Factor D described herein reduce the excessive activation of complement.
Phosphine-catalyzed dearomative [3+2] annulation of 3-nitroindoles and allenoates
作者:Kui Liu、Gang Wang、Shao-Jie Cheng、Wen-Feng Jiang、Cheng He、Zhi-Shi Ye
DOI:10.1016/j.tetlet.2019.06.016
日期:2019.7
dearomative [3+2] annulation of 3-nitroindoles with allenoates has been successfully developed, providing a facile access to cyclopenta[b]indolines with good to excellent yields and high diastereoselectivities. This strategy features mild reaction conditions, high functional group tolerance, and scalability. Additionally, the 2-nitrobenzofuran and 2-nitrobenzothiophene were good dearomative [3+2] annulation
已经成功开发了有效的膦催化的3-硝基吲哚与脲基甲酸酯的脱芳族环氧化物[3 + 2]环化反应,可轻松获得环戊二烯[ b ]吲哚,并具有良好或优异的收率和较高的非对映选择性。该策略具有温和的反应条件,较高的官能团耐受性和可扩展性。此外,2-硝基苯并呋喃和2-硝基苯并噻吩是良好的脱芳香性[3 + 2]环空伙伴。
Silver‐Catalyzed Asymmetric Dearomatization of Electron‐Deficient Heteroarenes via Interrupted Barton–Zard Reaction
作者:Qian Wan、Jia‐Hao Xie、Chao Zheng、Yao‐Feng Yuan、Shu‐Li You
DOI:10.1002/anie.202107767
日期:2021.9
Herein we report a catalytic asymmetricdearomatizationreaction of electron-deficient heteroarenes with α-substituted isocyanoacetates through an interrupted Barton–Zard reaction. A range of optically active pyrrolo[3,4-b]indole derivatives was obtained in good yields (up to 97 %) with high stereoselectivities (up to >20:1 dr and 97 % ee), using a catalytic system consisting of a cinchona-derived
Palladium(0)-Catalyzed Dearomative [3 + 2] Cycloaddition of 3-Nitroindoles with Vinylcyclopropanes: An Entry to Stereodefined 2,3-Fused Cyclopentannulated Indoline Derivatives
作者:Maxime Laugeois、Johanne Ling、Charlène Férard、Véronique Michelet、Virginie Ratovelomanana-Vidal、Maxime R. Vitale
DOI:10.1021/acs.orglett.7b00784
日期:2017.5.5
The palladium(0)-catalyzed diastereoselective dearomative cyclopentannulation of 3-nitroindoles with vinylcyclopropanes is described. This straightforward and highly atom-economical method leads to a wide range of functionalized indolines in good yields and diastereoselectivities and represents an unprecedented entry toward the valuable 2,3-fused cyclopentannulated indoline scaffold.