作者:Khalid M. Khan、Nida Ambreen、Uzma Rasool Mughal、Saima Jalil、Shahnaz Perveen、M. Iqbal Choudhary
DOI:10.1016/j.ejmech.2010.05.065
日期:2010.9
3-formylchromone (1) and its derivatives 2–24 and evaluation of their potentialantiinflammatory activities is reported here. These compounds were characterized by 1H NMR, EI MS, IR, and UV spectroscopic techniques and elemental analysis. The synthesized compounds were evaluated by using various in vitro and in vivo assay models for antiinflammatory activity and their effects were compared with known standard
Diastereoselective one-pot synthesis of novel ABCD-fused chromeno[2,3-d]pyrazolo[3,4-b]pyridines
作者:Eleni Dimitriadou、Julia Stephanidou-Stephanatou、Constantinos A. Tsoleridis、Dimitra J. Hadjipavlou-Litina、Christos Kontogiorgis、George E. Kostakis
DOI:10.1016/j.tet.2014.03.031
日期:2014.5
products was accomplished by 1D and 2D NMR experiments and confirmed by X-ray crystallographic analysis. Full assignment of all 1H and 13C NMR chemicalshifts has been unambiguously achieved. The reaction mechanism is also discussed. In addition, eight chromenopyrazolopyridine derivatives were tested for possible biological activity (antioxidant and lipid peroxidation inhibition).
已经描述了涉及色酮化学的一个新方面,其导致一锅合成功能化的新型ABCD稠合的苯并吡喃并吡咯并吡啶。该合成涉及色酮-3-苯甲酰hydr与异氰化物和乙炔二羧酸酯的多组分反应,从而形成了包含三个立体异构中心的新型复合四环苯并吡喃酮衍生物。产物的结构阐明是通过1D和2D NMR实验完成的,并由X射线晶体学分析证实。全部分配1 H和13明确地实现了13 C NMR化学位移。还讨论了反应机理。此外,测试了八种苯并吡唑并吡啶衍生物的可能的生物学活性(抗氧化剂和脂质过氧化抑制作用)。
Design and syntheses of novel N′-((4-oxo-4H-chromen-3-yl)methylene)benzohydrazide as inhibitors of cyanobacterial fructose-1,6-/sedoheptulose-1,7-bisphosphatase
Cyanobacterial fructose-1,6-/sedoheptulose-1,7-bisphoshatase (Cy-FBP/SBPase) is an important target enzyme for finding inhibitors to solve harmful algal bloom (HAB). In this study, as potential inhibitors of Cy-FBP/SBPase, a series of novel chromone-connecting benzohydrazone compounds (Novel N'-((4-oxo-4H-chromen-3-yl) methylene) benzohydrazide) were designed and synthesized. Their inhibitory activities against Cy-FBP/SBPase were further examined in vitro. Some of these compounds, such as f6-f8, f11, f12 and f16, exhibit higher inhibitory activities (IC50 = 11.2-16.1 mu M), especially, the compound f7 was identified as the most potent inhibitor with IC50 value of 11.2 mu M. The probable binding-mode of compound f7 was further analyzed carefully by molecular docking methods. These results indicate that compound f7 could be used as a lead compound for further optimization and might have potential to be developed as a new algicide. (C) 2013 Elsevier Ltd. All rights reserved.