Spectroscopic and cytotoxic characteristics of (p-cymene)Ru(II) complexes with bidentate coumarins and density functional theory comparison with selected Pd(II) complexes
摘要:
This paper presents the synthesis of two new (p-cymene)-ruthenium(II) complexes 3a,b with the bidentate coumarin ligands 2a,b. Both complexes were characterized by FTIR spectroscopy, H-1 NMR, C-13 NMR, MS, elemental analysis and DFT calculations. The X-ray structure of complex 3a was also solved. The cytotoxic properties of both complexes were examined on human leukemia NALM-6 and HL-60 cells and melanoma WM-115 cells. The complexes possess higher cytotoxic activity than the ligands, but distinctive result is for complex 3b, which exhibited higher cytotoxic effect on WM-115 cells (IC50 = 60.2 +/- 7.8 mu M) in comparison to carboplatin (IC50 = 422.2 +/- 50.2 mu M). The results of DFT calculations performed at the BP86-D3/QZ4P level for Ru(II) complexes and Pd(II) complexes with the same ligands indicate that Pd(II) complexes are more lipophilic. Moreover the RP-TLC-Based Lipophilicity assessment was also performed. (C) 2016 Elsevier B.V. All rights reserved.
Spectroscopic and cytotoxic characteristics of (p-cymene)Ru(II) complexes with bidentate coumarins and density functional theory comparison with selected Pd(II) complexes
摘要:
This paper presents the synthesis of two new (p-cymene)-ruthenium(II) complexes 3a,b with the bidentate coumarin ligands 2a,b. Both complexes were characterized by FTIR spectroscopy, H-1 NMR, C-13 NMR, MS, elemental analysis and DFT calculations. The X-ray structure of complex 3a was also solved. The cytotoxic properties of both complexes were examined on human leukemia NALM-6 and HL-60 cells and melanoma WM-115 cells. The complexes possess higher cytotoxic activity than the ligands, but distinctive result is for complex 3b, which exhibited higher cytotoxic effect on WM-115 cells (IC50 = 60.2 +/- 7.8 mu M) in comparison to carboplatin (IC50 = 422.2 +/- 50.2 mu M). The results of DFT calculations performed at the BP86-D3/QZ4P level for Ru(II) complexes and Pd(II) complexes with the same ligands indicate that Pd(II) complexes are more lipophilic. Moreover the RP-TLC-Based Lipophilicity assessment was also performed. (C) 2016 Elsevier B.V. All rights reserved.
Synthesis and Evaluation of 4-Hydroxycoumarin Imines as Inhibitors of Class II Myosins
作者:Jhonnathan Brawley、Emily Etter、Dante Heredia、Amarawan Intasiri、Kyle Nennecker、Joshua Smith、Brandon M. Welcome、Richard K. Brizendine、Thomas W. Gould、Thomas W. Bell、Christine Cremo
DOI:10.1021/acs.jmedchem.0c01062
日期:2020.10.8
Inhibitors of muscle myosin ATPases are needed to treat conditions that could be improved by promoting muscle relaxation. The lead compound for this study ((3-(N-butylethanimidoyl)ethyl)-4-hydroxy-2H-chromen-2-one; BHC) was previously discovered to inhibit skeletal myosinII. BHC and 34 analogues were synthesized to explore structure–activity relationships. The properties of analogues, including solubility
需要肌肉肌球蛋白 ATP 酶抑制剂来治疗可以通过促进肌肉放松来改善的病症。本研究的先导化合物((3-(N-丁基乙酰亚胺酰基)乙基)-4-羟基-2 H - chromen -2-one;BHC)先前被发现可抑制骨骼肌球蛋白II。合成了 BHC 和 34 种类似物以探索结构-活性关系。类似物的特性,包括溶解性、稳定性和毒性,表明 BHC 支架可用于开发治疗方法。快骨骼肌和心肌肌球蛋白II,抑制骨骼肌收缩力的肌动蛋白活化的ATP酶活性的抑制离体,和减慢在体外测量了肌动蛋白滑动速度。与 BHC 相比,具有芳香侧臂的几种类似物对骨骼肌球蛋白与心脏肌球蛋白的效力(半数最大抑制浓度 (IC 50 ) <1 μM)和选择性(≥12 倍)均有所提高。几种类似物阻断了神经传递,表明它们对非肌肉肌球蛋白 II 的选择性高于骨骼肌球蛋白。竞争和分子对接研究表明 BHC 和 blebbistatin 结合到肌球蛋白的同一位点。
A four-component Pfitzinger reaction: synthesis of 2-pyronylquinolin-4-carbamides
Abstract A one-pot route was developed for efficient synthesis of novel 2-substituted quinolin-4-carboxamides via a four-component sequential reaction between isatins, ammonium acetate, triethyl orthoacetate, and 4-hydroxycoumarin or 4-hydroxy-6-methyl-2H-pyran-2-one. This protocol is an extension of Pfitzinger’s quinoline synthesis and involves an unprecedented in situ iminoacetylation of 2H-pyrone
Synthesis, Crystal Structure and Biological Characterization of a Novel Palladium(
<scp>II</scp>
) Complex with a Coumarin‐Derived Ligand
作者:Elzbieta Budzisz、Bernhard K. Keppler、Gerald Giester、Magdalena Wozniczka、Aleksander Kufelnicki、Barbara Nawrot
DOI:10.1002/ejic.200400483
日期:2004.11
for the formation of a palladium(II) complex. The structures of the ligand and its palladiumcomplex 3 were determined by IR and 1H NMR spectroscopy, FAB mass spectrometry and elemental analysis. The single-crystal X-ray structure of 3 was also solved. Ligand 2 in 20% dioxane solution shows two protonation constants — log β11 = 4.28 ± 0.01 and log β12 = 7.66 ± 0.03. In complex 3 two ligand molecules
Spectroscopic and cytotoxic characteristics of (p-cymene)Ru(II) complexes with bidentate coumarins and density functional theory comparison with selected Pd(II) complexes
This paper presents the synthesis of two new (p-cymene)-ruthenium(II) complexes 3a,b with the bidentate coumarin ligands 2a,b. Both complexes were characterized by FTIR spectroscopy, H-1 NMR, C-13 NMR, MS, elemental analysis and DFT calculations. The X-ray structure of complex 3a was also solved. The cytotoxic properties of both complexes were examined on human leukemia NALM-6 and HL-60 cells and melanoma WM-115 cells. The complexes possess higher cytotoxic activity than the ligands, but distinctive result is for complex 3b, which exhibited higher cytotoxic effect on WM-115 cells (IC50 = 60.2 +/- 7.8 mu M) in comparison to carboplatin (IC50 = 422.2 +/- 50.2 mu M). The results of DFT calculations performed at the BP86-D3/QZ4P level for Ru(II) complexes and Pd(II) complexes with the same ligands indicate that Pd(II) complexes are more lipophilic. Moreover the RP-TLC-Based Lipophilicity assessment was also performed. (C) 2016 Elsevier B.V. All rights reserved.