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The emergence of drug resistance and low specificity with side effects are the significant challenges in pharmaceutical sectors for control of cancer nowadays. Notwithstanding, this is an imperative prerequisite to develop novel anticancer agents through mainstream medicinal chemistry approaches. The intriguing quinoline and its derivatives have demonstrated as significant building blocks for the locating of new promising anticancer agents. Consequently, quinoline moiety with the addition of suitable congeners would offer a strategy for the development of potential drug candidates. This present review article summarizes the recent advances (2018‐2020) of quinoline hybrids and their anticancer activity. The mechanism action and plausible structure‐activity relationship have discussed.

Metal-phenolic networks (MPNs) have recently attracted great interest in material chemistry and biomaterials because of their biocompatible, versatile, and multifunctional properties. In this paper, we describe a facile method for preparation of a designable antifouling, antimicrobial, and substrate-independent coating assembled from the coordination of metal ions and catecholic groups. Hydrophilic and catecholic polymers were synthesized by copolymerization of dopamine methacrylamide (DMA) and poly(ethylene glycol)methyl methacrylate (PEGMA) to afford p(PEGMA-co-DMA). To investigate the assembly and formation of MPN films, two different metal ions, that is, ferrous (Fe II ) and ferric (Fe III ) ions, to react with p(PEGMA-co-DMA) were compared. The binding constants between iron ions and p(PEGMA-co-DMA) have been investigated by ultraviolet−visible spectroscopy (UV−vis). Measurements with atomic force microscopy, contact angle goniometer, and X-ray photoelectron spectroscopy (XPS) were carried out to quantitatively analyze the surface morphology, wettability, and interfacial elemental compositions of coatings, respectively. Moreover, ellipsometric measurements were performed to obtain the film thickness and grafting density. In addition, the pH-responsive property of the MPN films was investigated at different pH values, showing fast disassembly of the networks at low pH. The antifouling properties of the obtained coatings were analyzed by exposing them to bacteria of Escherichia coli and Staphylococcus epidermidis and NIH-3T3 fibroblasts under observation of fluorescence microscopy and cell imaging analysis. The findings suggest that the MPN from complexation of p(PEGMA-co-DMA) and metal ions provides excellent antifouling, pH-responsive, and biocompatible properties on a wide range of substrates. Furthermore, the released iron ions can effectively suppress the growth of bacteria. Accordingly, the new coating architecture offers a universal feature to control surface properties and functionalization for various applications.

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“Nanotechnology” is an emerging as a significant development tool for the green synthesis of noble nanomaterial. Green synthesis is superior to conventional chemical methods as it is less expensive, reduced pollution, and enhances human health and the environment safety. Nanomaterial and their green synthesis from plants became an interesting aspect of nanotechnologies due to the many benefits they provide to living beings, as well as their low cost and minimal harm to humans and the environment. They also have a wide range of applications in biomedical research, diagnostics, and drug discovery and also in catalysis. The current review focuses on the synthesis of nanoparticle from plants using greener approach and their novel applications.

For field-like environmental gas monitoring and noninvasive illness diagnostics, effective sensing materials with exceptional sensing capabilities of sensitive, quick detection of volatile organic compounds (VOCs) are required. Carbon-based nanomaterials (CNMs), like CNTs, graphene, carbon dots (Cdots), and others, have recently drawn a lot of interest for their future application as an elevated-performance sensor for the detection of VOCs. CNMs have a greater potential for developing selective sensors that target VOCs due to their tunable chemical and surface properties. Additionally, the mechanical versatility of CNMs enables the development of novel gas sensors and places them ahead of other sensing materials for wearable applications. An overview of the latest advancements in the study of CNM-based sensors is given in this comprehensive organized review.

A pharmacophore model has been developed for determining the essential structural requirements for antimalarial activity from the eight series of substituted 1,2,4-trioxanes. The best pharmacophore model possessing two aliphatic hydrophobic, one aromatic hydrophobic, one hydrogen-bond (H-bond) acceptor, and one H-bond acceptor (lipid) feature for antimalarial activity showed an excellent correlation coefficient for the training (r(2)(training) = 0.85) and a fair correlation coefficient for the test set (r(2)(test) = 0.51) molecules. The model predicts well to other known substituted 1,2,4-trioxanes including those which either are drugs or are undergoing clinical trials. In order to further validate this model, five substituted 1,2,4-trioxanes were synthesized from the generated focused library and screened for antimalarial activity. The observed activity of these molecules was consistent with the pharmacophore model, suggesting that the model may be useful in the design of potent antimalarial agents.