☆ 4.6 Article

Pyrazole bridged binuclear transition metal complexes: Synthesis, characterization, antimicrobial activity and DNA binding/cleavage studies

JOURNAL OF MOLECULAR STRUCTURE (2011)

期刊

JOURNAL OF MOLECULAR STRUCTURE

卷 1006, 期 1-3, 页码 580-588

出版社

ELSEVIER

DOI: 10.1016/j.molstruc.2011.10.008

关键词

Pyrazole; Thiosemicarbazide; Antimicrobial activity; DNA binding study; Intercalation

类别

Chemistry, Physical

资金

Karnatak University, Dharwad
University Grant Commission

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Reagent

摘要

A new ligand system having pyrazolato endogenous bridging component and N4S2 donating sites is synthesized by the condensation of 3,5-dichloroformyl-1H-pyrazole with phenylthiosemicarbazide. Both ligand and its binuclear Co-II, Ni-II, Cu-II and Zn-II complexes are characterized by the spectral and analytical methods. All the complexes were found to be binuclear monomeric in nature with octahedral geometry and nonelectrolytes. Electrochemical activity is observed only for the Cu-II complex in the applied potential range. Ligand and complexes were screened for antimicrobial activity and made to interact with Escherichia coli DNA to investigate the binding/cleaving ability by absorption, hydrodynamic, thermal denaturation and electrophoresis studies. The copper complex exhibited higher inhibition against a gram negative bacterium, E. coli and shown good intercalating ability with E. coli DNA. (C) 2011 Elsevier B.V. All rights reserved.

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Article Chemistry, Physical

Synthesis and characterization of supramolecular assembly probenecid cocrystal

Yang Li, Yan Zhang, Hong Xu, Min Li, Zhen Li, Zi-yu Song, Ji-shi Chen, Yan-Jun Liu, Yong Sun, Zhao Yang

Summary: This study reports the synthesis and solid-state characterization of a new pharmaceutical cocrystal, PRO-BPE, which can enhance the solubility of the highly water-insoluble prodrug probenecid. The PRO-BPE cocrystals were found to have superior water solubility compared to pure PRO. This research provides valuable insights into improving the solubility of poorly soluble drugs.

JOURNAL OF MOLECULAR STRUCTURE (2024)

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Article Chemistry, Physical

Water soluble spiropyran for Hg2+sensing in water

Lucas G. B. Felicio, Bianca B. M. Vieira, Ivana S. Lula, Renata Diniz, Frank Alexis, Flavio B. Miguz, Frederico B. De Sousa

Summary: A novel spiropyran derivative was synthesized for heavy metals sensing in water. The results demonstrated that the new derivative can serve as a rapid, sensitive, and simple tool for detecting Hg2+ ions in water with high selectivity.

JOURNAL OF MOLECULAR STRUCTURE (2024)

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Article Chemistry, Physical

Preparation and performance of superhydrophobic surfaces with low surface energy modified attapulgite

Junqing Meng, Jie Wang, Lijuan Wang, Chunhui Lyu, Haiyan Chen, Yingpei Lyu, Baisheng Nie

Summary: Material modification with low surface energy can achieve lower surface free energy on micro-and nano-rough structures, which is crucial for developing superhydrophobic surfaces. In this study, attapulgite (APT) was modified with alkylamine, alkylammonium salt, and stearic acid, and the interaction between low surface materials and attapulgite was explained. The results showed that the hydrophobicity of APT was significantly modified by the modifiers, and the surface free energy of the composites first decreased and then increased with increasing molecular number of low surface energy monomers.

JOURNAL OF MOLECULAR STRUCTURE (2024)

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Article Chemistry, Physical

One-pot synthesis of ligand-free highly active Pd catalyst supported on NiFe spinel oxide for Suzuki-Miyaura cross-coupling reaction

Karan Goswami, Dipak Das, Parthasarathi Bera, Sounak Roy, Md. Motin Seikh, Prasanta Kumar Sinha, Arup Gayen

Summary: This work presents the development of a simple and highly active heterogeneous Pd catalyst for Suzuki-Miyaura carbon-carbon cross-coupling reaction. The NiPdFe-1 catalyst shows the best activity and stability among the prepared catalysts. It efficiently promotes the coupling reaction between aryl bromide and phenyl boronic acid under mild reaction conditions with high isolated yields.

JOURNAL OF MOLECULAR STRUCTURE (2024)

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Article Chemistry, Physical

Design, development and characterization of the Apremilast and Indomethacin coamorphous system

Ekta Pardhi, Devendra Singh Tomar, Rahul Khemchandani, Gananadhamu Samanthula, Pankaj Kumar Singh, Neelesh Kumar Mehra

Summary: The main aim of this study was to prepare a drug-drug coamorphous system to improve the physiochemical properties, solubility and stability of Apremilast and Indomethacin. Various solid-state characterization techniques were used to characterize the prepared system. Molecular level interactions were studied using molecular modeling and ATR-FTIR and 1H NMR. Solubility and dissolution studies showed the benefits of the coamorphous system. The system was found to be stable for a period of five months. Permeation study also demonstrated improved flux for both drugs compared to their crystalline forms. The coamorphous system showed anti-psoriatic and anti-melanogenic activity based on molecular docking results. Overall, the developed CAM-based supersaturated system exhibited improved physicochemical properties and physical stability.

JOURNAL OF MOLECULAR STRUCTURE (2024)

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