通过修饰曲酸的伯醇基作为酪氨酸酶抑制剂,设计了一系列带有芳氧基甲基-1 H -1,2,3-三唑-1-基部分的曲酸衍生的化合物6a-p。通过点击反应合成目标化合物6a-p。所有化合物均显示出非常有效的抗酪氨酸酶活性(IC 50 s = 0.06-6.80 µM),优于参考药物曲酸。特别是,萘氧基类似物6o和6p的效价比曲酸高31–155倍。所选化合物6o的金属结合研究表明,原型化合物具有金属螯合能力,尤其是对Cu 2+具有螯合能力。离子。如通过针对黑色素瘤(B16)细胞系和人包皮成纤维细胞(HFF)细胞的细胞毒性试验所证实的,有前途的化合物6o和6p具有可接受的安全性。
Gold(III)‐Catalyzed Intermolecular Oxidation‐Cyclization of Ynones: Access to 4‐Substituted Chroman‐3‐ones
作者:Jian Li、Fang Yang、Yang‐Ting Ma、Kegong Ji
DOI:10.1002/adsc.201900260
日期:2019.4.23
A synthesis of 4‐substituted chroman‐3‐one derivatives has been developed through a gold(III) catalyzed oxidation‐cyclization of ynones in good to excellent yield using easily prepared substrates. A broad range of synthetically useful functional groups (halide, alkene, alkyne, phenolic hydroxyl) were tolerated. Further application of this method paves a new way to prepare the skeleton of oblarotenoids
A series of new 1,2,3-triazolo-phenanthrene hybrids has been synthesized by employing Cu(I)-catalyzed azide-alkyne cycloaddition (CuAAC) reaction. These compounds were evaluated for their in vitro cytotoxic potential against various human cancer cell lines viz. lung (A549), prostate (PC-3 and DU145), gastric (HGC-27), cervical (HeLa), triple negative breast (MDA-MB-231, MDA-MB-453) and breast (BT-549
C5′-N-cyclopropylcarboxamido-C6-amino-C2-alkynylated purine nucleosideanalogues 11a-g were synthesized through a Sonogashira cross-coupling reaction. The nine-step synthesis is easy to perform, and employs commercially available reagents. 2-Iodo-5′-N-cyclopropylcarboxamidoadenosine (9) was used as the starting intermediate for the synthesis of title derivatives 11a-g. Synthetic intermediates (2–9) and
为了开发有效的抗菌剂和抗癌剂,通过Sonogashira交叉偶联反应合成了一系列C5'-N-环丙基羧酰胺基-C6-氨基-C2-炔基化嘌呤核苷类似物11a-g。九步合成易于进行,并使用市售试剂。2-Iodo-5'-N-cyclopropylcarboxamidoadenosine(9)被用作合成标题衍生物11a-g的起始中间体。通过IR,1 H NMR,13 C NMR和质谱对合成中间体(2–9)和最终产物(11a-g)进行了适当的表征。合成的嘌呤核苷类似物(11a-g评估了它们对两种革兰氏阳性和两种革兰氏阴性细菌的体外抗菌活性。然后测试它们对MDA-MB-231和Caco-2癌细胞系的细胞毒性,以确定其抗癌活性。在测试的化合物中,化合物11c和11g对金黄色葡萄球菌和铜绿假单胞菌细菌菌株表现出最强的抗菌活性。化合物11B和11E显示了很大的IC 50小号的7.9和6.8微克/毫升,分别,VS
A one-pot ‘click’ reaction from spiro-epoxides catalyzed by Cu(<scp>i</scp>)-pyrrolidinyl-oxazole-carboxamide
A sustainable green methodology for the ‘one-pot’ syntheses of 1,2,3-triazolo 3-hydroxy-2-oxindoles from isatin–epoxides has been employed via a CuAAC reaction.
We present a convenient route for the synthesis of C6-amino-C5′-N-cyclopropyl carboxamido-C2-alkynylated purine nucleoside analogues 11a–g via Sonogashira coupling reaction. The nine stepsynthesis is easy to perform, employing commercially available reagents. Compound 9 is used as key intermediate for the synthesis of analogues 11a–g. Synthetic intermediates and final products are appropriately characterized
我们提出一个方便的途径为C6氨基C5'-合成Ñ环丙基甲酰氨基C2-炔基化的嘌呤核苷类似物11A -克经由Sonogashira偶联反应。使用市售试剂,九步合成易于进行。化合物9被用作合成类似物11a - g的关键中间体。合成中间体和终产物通过IR,1 H NMR,13 C NMR和质量进行了适当表征。修饰后的核苷类似物11a – g在体外进行了评估。对MDA-MB-231和Caco-2细胞系的抗癌活性。筛选数据表明,与标准药物阿霉素相比,化合物11b和11e对MDA-MB-231的有效IC 50值分别为7.9、6.8 µg / mL和对Caco-2的有效IC 50值分别为7.5、8.3 µg / mL。这些新型衍生物的抗癌特性。