A new synthesis of novel alkenylated flavones by palladium-catalyzed cross-coupling reactions
作者:Szabolcs Fekete、Tamás Patonay、Artur M. S. Silva、José A. S. Cavaleiro
DOI:10.3998/ark.5550190.0013.519
日期:——
Bromoflavones were treated with various terminal alkynes in palladium-catalyzedcross-couplingreactions under phosphine-free condions to give the expected alkenylatedflavones in moderate to good yields. The presence of two differenthydrogens in the terminal alkene led to the formation of both alkenylated and alkylated products.
From Simple to Complex: Rhodium(III)-Catalyzed C–C Bond Cleavage and C–H Bond Functionalization for the Synthesis of 3a,8b-Dihydro-1<i>H</i>-cyclopenta[<i>b</i>]benzofuran-1-ones
A rhodium(III)-catalyzed strategy for the one-step synthesis of polysubstituted cis-3a,8b-dihydro-1H-cyclopenta[b]benzofuran-1-ones from simple 2′-hydroxychalcones and alkynes is developed. This novel transformation involves a sequential C–C bond cleavage and dehydrogenative annulation, leading to the product bearing a quaternary and a tertiary carbon center. 13C labeling experiments revealed that
提出了一种由铑(III)催化从简单的2'-羟基查耳酮和炔烃一步合成多取代的顺式-3a,8b-二氢-1 H-环戊[ b ]苯并呋喃-1-酮的策略。这种新颖的转变涉及到连续的C–C键断裂和脱氢环化反应,从而使产物带有一个四级和三级碳中心。13 C标记实验表明,CC键断裂不仅发生在C–C(C═O)键处,而且发生在C≡C键处。这项研究提供了一种使用C–C键断裂的替代策略,从而证明了该策略与C–H键功能化相结合的能力,可从简单的起始材料组装复杂的结构。
Deoxygenation of α,β-unsaturated acylphenols through ethyl o-acylphenylcarbonates with Luche reduction
An efficient protocol for deoxygenation of alpha,beta-unsaturated acylphenols through ethyl o-acylphenylcarbonates with Luche reduction is described. The reaction shows very good selectivity and tolerates a wide range of functionalities on alpha,beta-unsaturated acylphenols, giving corresponding 2-allylphenols in good to excellent yields. (C) 2013 Elsevier Ltd. All rights reserved.
Flavone-based dual PARP-Tubulin inhibitor manifesting efficacy against endometrial cancer
作者:Sachin Sharma、Kavya Chandra、Aliva Naik、Anamika Sharma、Ram Sharma、Amandeep Thakur、Ajmer Singh Grewal、Ashwani K. Dhingra、Arnab Banerjee、Jing Ping Liou、Santosh Kumar Guru、Kunal Nepali
DOI:10.1080/14756366.2023.2276665
日期:2023.12.31
[EN] BENZENE-FUSED 6-MEMBERED OXYGEN-CONTAINING HETEROCYCLIC DERIVATIVES OF BICYCLIC HETEROARYLS<br/>[FR] DÉRIVÉS HÉTÉROCYCLIQUES D'HÉTÉROARYLES BICYCLIQUES À 6 CYCLES BENZÉNIQUES ACCOLÉS DE BENZÈNE CONTENANT DE L'OXYGÈNE
申请人:NOVARTIS AG
公开号:WO2011064211A1
公开(公告)日:2011-06-03
The invention relates to new derivatives of formula I, wherein the substituents are as defined in the specification; to processes for the preparation of such derivatives; pharmaceutical compositions comprising such derivatives; such derivatives as a medicament; such derivatives for the treatment of a proliferative disease.