Cyclocondensation of β-(aryl/heteroaryl)methylaminoenones with thionyl chloride: a facile general approach for the synthesis of 2,4-bis(het)aryl-5(het)aroylthiazoles
作者:Toreshettahally R. Swaroop、Hiriyakkanavar Ila、Kanchugarakoppal S. Rangappa
DOI:10.1016/j.tetlet.2013.07.079
日期:2013.9
An efficient, regioselectiveroute to 2,4-bis(het)aryl-5(het)aroylthiazoles has been developed by cyclocondensation of thionyl chloride with novel β-(het)arylmethylaminoenones which are readily accessible by the reaction of (het)arylmethylamines with 1,3-bis(het)arylmonothio-1,3-diketones. The method allows entry to 2,4,5-trisubstituted thiazoles, with full control for the introduction of either a
Synthesis of Substituted Benzo[<i>b</i>]thiophenes via Sequential One-Pot, Copper-Catalyzed Intermolecular C–S Bond Formation and Palladium-Catalyzed Intramolecular Arene–Alkene Coupling of Bis(het)aryl/alkyl-1,3-monothiodiketones and <i>o</i>-Bromoiodoarenes
作者:Somaraju Yugandar、Saidulu Konda、Hiriyakkanavar Ila
DOI:10.1021/acs.orglett.7b00273
日期:2017.4.7
A new, convergent, one-potsynthesis of 2,3-substituted benzo[b]thiophenes from readily available 1,3-bis(het)aryl-1,3-monothiodiketones and o-bromoiodoarenes involving a sequential copper-catalyzed intermolecular C–S coupling followed by palladium-catalyzedintramolecular arene–alkene coupling of in situ generated β-(o-bromoaryl)thiovinylketones has been described. Synthesis of a few thieno- and furano-fused
一种新的,收敛的,一锅合成的2,3-取代的苯并[ b ]噻吩,其由容易获得的1,3-双(杂)芳基-1,3-单硫代二酮和邻溴代碘代芳烃组成,涉及连续的铜催化的分子间C已经描述了-S偶联,然后是钯催化的原位生成的β-(邻-溴芳基)硫代乙烯基酮的分子内芳烃-烯烃偶联。在不同的钯催化条件下,通过携带2-噻吩基/呋喃基的β-(邻溴代芳基)硫代烯酮的分子内直接CH(杂)芳基化反应,还可以合成一些噻吩基和呋喃基稠合的2-(杂)芳酰基亚乙基硫代色酮。被报道。
Regioselective synthesis and biological studies of novel 1-aryl-3, 5-bis (het) aryl pyrazole derivatives as potential antiproliferative agents
作者:Hanumappa Ananda、Kothanahally S. Sharath Kumar、Mayilaadumveettil Nishana、Mahesh Hegde、Mrinal Srivastava、Raghava Byregowda、Bibha Choudhary、Sathees C. Raghavan、Kanchugarakoppal S. Rangappa
DOI:10.1007/s11010-016-2887-7
日期:2017.2
Pyrazole moiety represents an important category of heterocyclic compound in pharmaceutical and medicinal chemistry. The novel 1-aryl-3, 5-bis (het) aryl pyrazolederivatives were synthesized with complementary regioselectivity. The chemical structures were confirmed by IR, 1H NMR, 13C NMR, and mass spectral analysis. The chemical entities were screened in various cancer cell lines to assess their
吡唑部分是药物和药物化学中杂环化合物的重要类别。以互补的区域选择性合成了新颖的1-芳基-3、5-双(杂)芳基吡唑衍生物。化学结构通过IR,1 H NMR,13 C NMR和质谱分析确认。在各种癌细胞系中筛选了化学实体,以评估其细胞活力。结果表明,化合物3-(1-(4-溴苯基)-5-苯基-1H-吡唑-3-基)吡啶(5d)对乳腺癌和白血病细胞具有最大的细胞毒性作用。通过活死细胞测定法和细胞周期分析证实了细胞毒性。线粒体膜电位,膜联蛋白V-FITC染色,DNA片段化,Hoechst染色,蛋白质印迹法和Western印迹分析揭示了化合物5d通过激活癌细胞凋亡来诱导细胞死亡的能力。因此,本研究证明化合物5d可能是开发用于治疗白血病和乳腺癌的小分子抑制剂的有吸引力的化学实体。