Iron-Facilitated Oxidative Radical Decarboxylative Cross-Coupling between α-Oxocarboxylic Acids and Acrylic Acids: An Approach to α,β-Unsaturated Carbonyls
The first Fe-facilitated decarboxylative cross-coupling reaction between α-oxocarboxylicacids and acrylic acids in aqueous solution has been developed. This transformation is characterized by its wide substrate scope and good functional group compatibility utilizing inexpensive and easily accessible reagents, thus providing an efficient and expeditious approach to an important class of α,β-unsaturated
A New and Direct Synthesis of Chalcones Via TFAA-H3PO4 Mediated C-C Bond Forming Reaction
作者:Kavitha Kankanala、Lingam Venkata Reddy、Vangala Ranga Reddy、Khagga Mukkanti、Sarbani Pal
DOI:10.2174/157017811794557750
日期:2011.1.1
A number of α,β-unsaturated carboxylic acids were reacted with electron rich arenes or heteroarene in the presence of trifluoroacetic anhydride (TFAA) and H3PO4 at room temperature to give a variety of chalcone derivatives in good to excellent yields. The methodology was used to prepare novel compounds of potential pharmacological significances.
Synthesis and Structure-activity Relationships of Chalcone Derivatives as Inhibitors of Ovarian Cancer Cell Growth
作者:Zachary D. Tucker、Francis J. Barrios、Amanda J. Krzysiak
DOI:10.2174/1570180814666170505120258
日期:2017.10.3
proliferation of CA-OV3 cells was measured with a MTS assay. Results: Out of the thirty-four synthesized compounds, eight are newderivatives. The synthesized compounds were characterized by 1H NMR, 13C NMR, and HRMS. Biological evaluation of these β-phenylacrylophenone derivatives in CA-OV3 cells showed interesting antiproliferative activities providing initial structure – activity information. Conclusion:
背景:卵巢癌仍然是一种五年生存率很低的疾病。因此,需要新颖的疗法。天然查耳酮及其合成衍生物已在包括抑制癌细胞生长在内的许多领域显示出生物活性。 目的:建立查尔酮衍生物文库,包括新颖的结构,并确定其对卵巢癌细胞生长的抑制作用及其与结构-活性的关系。 方法:用取代的苯乙酮与芳族醛之间的Claisen-Schmidt缩合反应,以中等至极好的收率和良好的纯度生产了一系列新型查耳酮。用MTS测定法测量CA-OV3细胞的细胞增殖。 结果:在34种合成化合物中,有8种是新衍生物。合成的化合物通过1 H NMR,13 C NMR和HRMS进行表征。在CA-OV3细胞中对这些β-苯基丙烯酮衍生物进行的生物学评估显示出有趣的抗增殖活性,提供了初始结构-活性信息。 结论:在34种测试的化合物中,有14种显示出显着的活性,其中一些显示在100 µM时几乎完全抑制了生长。结构-活性关系表明,对A环的修饰是宽容的,对
Development of a General Palladium-Catalyzed Carbonylative Heck Reaction of Aryl Halides
The first generalpalladium-catalyzedcarbonylative vinylation of aryl halides with olefins in the presence of CO has been developed. Applying a catalyst system consisting of [(cinnamyl)PdCl](2) and bulky imidazolyl-phosphine ligand L1 allows for the efficient and selective synthesis of α,β-unsaturated ketones under mild reaction conditions. Starting from easily available aryl halides and olefins,
在 CO 存在下,第一个通用钯催化的芳基卤化物与烯烃的羰基化乙烯基化已经被开发出来。应用由 [(肉桂基)PdCl](2) 和庞大的咪唑基膦配体 L1 组成的催化剂体系,可以在温和的反应条件下高效和选择性地合成 α,β-不饱和酮。从容易获得的芳基卤化物和烯烃开始,可以以简单的方式制备通用的结构单元。证明了这种新协议的通用性和功能组耐受性。
Antimalarial Alkoxylated and Hydroxylated Chalones: Structure−Activity Relationship Analysis
作者:Mei Liu、Prapon Wilairat、Mei-Lin Go
DOI:10.1021/jm0101747
日期:2001.12.1
among the active compounds. Hydroxylatedchalcones were less active than the corresponding alkoxylated analogues. When evaluated in vivo, 8 and 208 were comparable to chloroquine in extending the lifespan of infected mice. Multivariate data analysis showed that in vitro activity was mainly determined by the properties of ring B. Quantitative structure-activityrelationship models with satisfactory predictive