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Comprehensive Review on Metal Nanoparticles Catalyzed Synthesis of Aza- and Oxa-Heterocycles Reported in 2021 2021年金属纳米粒子催化合成氮杂双环和氧杂双环综述
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-08-23 DOI: 10.2174/1570193x19666220823101118
Tejas M. Dhameliya, R. Patel, Rajvi H. Amin, D. Sureja, K. Bodiwala
Among the several heterocyclic compounds, nitrogen and oxygen are predominant heterocycles due to their abundant biological importance. The nanoparticles have demonstrated the excellent catalytic activity under optimum conditions with higher reusability or recyclability and higher yields of synthetic heterocyclic targets. Previously we reviewed the synthesis of aza- and oxa-heterocycles catalyzed by metal nanoparticles (MNPs) in 2009-2019 and published an update of such reports of 2020 on the same subject. With anticipations to the next, the present comprehensive work highlights the synthesis of aza- and oxa-heterocycles catalyzed by MNPs reported during the year, 2021 to update the reader of the present work with the most recent trends in selection of MNPs in the synthesis of desired heterocyclic scaffolds.
在几种杂环化合物中,氮和氧是主要的杂环,因为它们具有丰富的生物学意义。纳米颗粒在最佳条件下表现出优异的催化活性,具有更高的可重复使用性或可回收性以及更高的合成杂环靶标产率。此前,我们在2009-2019年综述了金属纳米颗粒(MNPs)催化的氮杂杂环和氧杂杂环的合成,并发表了2020年关于同一主题的此类报告的更新。展望下一步,本综合工作重点介绍了2021年期间报道的MNPs催化的氮杂和氧杂杂环的合成,以向本工作的读者更新在合成所需杂环支架中选择MNPs的最新趋势。
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引用次数: 1
Comprehensive Insight into Synthetic Strategies of Enigmol and Its Analogs as Therapeutic Agents Enigmol及其类似物治疗药物合成策略的综合研究
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-08-20 DOI: 10.2174/1570193x19666220820115630
Parleen Kaur, Vasundhara Singh
1-Deoxysphingolipids are a class of sphingolipids which lacks the primary hydroxyl group(C1-OH). Hence, it does not get converted/degraded to complex corresponding products like sphingosine-1-phosphate (SIP), a pro-mitotic. Enigmol, an orally bioavailable 1-deoxyphingolipid has shownpotential against various different types of cancer cells along with impressive cytotoxic/antiproliferative properties. Due to its unique structural properties, Enigmol and its analogs haveattracted considerable attention from synthetic organic chemists. This review provides an overview ofall the synthetic approaches being followed for the synthesis of Enigmol and its structural analogs.
1-脱氧鞘脂是一类缺乏一级羟基(C1-OH)的鞘脂。因此,它不会被转化/降解为复杂的相应产物,如鞘氨醇-1-磷酸(SIP),一种促有丝分裂物质。Enigmol是一种口服生物可利用的1-脱氧磷脂,具有对抗多种不同类型癌细胞的潜力,同时具有令人印象深刻的细胞毒性/抗增殖特性。由于其独特的结构性质,Enigmol及其类似物引起了合成有机化学家的极大关注。这篇综述提供了所有的合成方法被遵循的合成Enigmol和它的结构类似物的概述。
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引用次数: 0
Palladium (Pd) based Photocatalysts for Suzuki Coupling Reactions: an overview 用于Suzuki偶联反应的钯基光催化剂:综述
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-08-19 DOI: 10.2174/1570193x19666220819093803
J. J. Boruah, Siva Prasad Das
Extensive research has been documented in the last few decades on the utilization of near IR, visible and UV light in organic chemical transformations. In this brief review, we provide an overview of the most noteworthy achievements in the area of photocatalytic Suzuki coupling reactions by palladium (Pd) based catalytic systems. The works on different types of Pd based photocatalysts for Suzuki coupling reaction and their characteristic as well as catalytic activity in terms of substrate scope, recyclability, TON or TOF are discussed herein.
在过去的几十年里,人们对近红外、可见光和紫外光在有机化学转化中的应用进行了广泛的研究。本文综述了钯基催化体系在光催化铃木偶联反应领域中最值得关注的研究成果。介绍了用于铃木偶联反应的不同类型Pd基光催化剂的研究进展,从底物范围、可回收性、TON或TOF等方面分析了它们的特点和催化活性。
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引用次数: 0
Propiolic acids in the synthesis of N-heterocycles 丙酸在N-杂环合成中的应用
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-08-04 DOI: 10.2174/1570193x19666220804145501
Zhanyong Wang, Zhantong Liu, Nan Wang, Yuan-feng Tong
This review discussed the synthetic applications of propiolic acids in the preparation of diverse N-heterocycles. 3~9-membered rings like azirines, β-lactams, oxazolidin-2-ones, 2-oxindoles, indoles, isoindolin-1-ones, imidazo[1,2-a]pyridines, triazoles, 2-pyridones, 2-quinolones, 1,4-benzothiazines, thiazinones, spiroindolines et al could be constructed via radical addition, four-component Ugi reactions, 1,3-dipolar cycloadditions, or Diels-Alder reaction mechanism. We hope this review will promote future research in this area.• Introduction
综述了丙酸在制备各种n -杂环化合物中的合成应用。3~9元环可以通过自由基加成、四组分Ugi反应、1,3-偶极环加成或diols - alder反应机制构建,如氮嘧啶、β-内酰胺、恶唑烷-2-酮、2-氧吲哚、吲哚、异吲哚-1-酮、咪唑[1,2-a]吡啶、三唑、2-吡啶酮、2-喹诺酮、1,4-苯并噻唑、噻嗪酮、螺吲哚啉等。我们希望这篇综述能促进这一领域未来的研究。•介绍
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引用次数: 0
Extraction methods and applications of bioactive compounds from neem (Azadirachta indica): A mini-review 印楝中生物活性化合物的提取方法及应用
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-07-07 DOI: 10.2174/1570193x19666220707125726
Samuel Lepe de Alba, C. García-González, Marcos A. Coronado Ortega, J. Bautista, G. M. Alpírez, Daniela G. L. Montes Núñez
Neem tree (Azadirachta Indica), native to the Indian subcontinent, is known as a versatile plant, rich source of bioactive compounds such as azadirachtin, nimonol, nimocinol, nimocinolide, gallic acid, gallocatechin, epicatechin, azadiradione, nimbin, salannin, epoxyazadiradione, etc. The isolated from neem phytochemicals, among other, are more than 300. The present work details the techniques for extracting compounds from different parts of neem, such as bark, husk seed, seed, seeds oil, tree, leaves, and flowers. Furthermore, it comments on the various applications, including medicinal, environmental, and veterinary of the neem-derived bioactive compounds, as well as their use in cattle raising and in cosmetics, disinfectants, rubber, and textile production, on the basis of a systematic documentary analysis from 2019 onwards.
印楝(Azadirachta Indica)原产于印度次大陆,是一种多功能植物,富含印楝素、尼莫醇、尼莫酚、尼莫内酯、没食子酸、没食子儿茶素、表儿茶素、印楝酮、宁宾、沙兰宁、环氧印楝酮等生物活性化合物。本工作详细介绍了从印楝不同部位提取化合物的技术,如树皮、壳籽、种子、籽油、树、叶和花。此外,根据2019年以来的系统文献分析,它评论了印楝衍生生物活性化合物的各种应用,包括药用、环境和兽医,以及它们在养牛和化妆品、消毒剂、橡胶和纺织品生产中的应用。
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引用次数: 1
The Synthesis of Australine and its Stereoisomers as Naturally Pyrrolizidine Alkaloids 天然吡咯里西啶类生物碱澳洲碱及其立体异构体的合成
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-07-04 DOI: 10.2174/1570193x19666220704115936
Ghodsi Mohammadi Ziarani, N. Jamasbi, Fatemeh Mohajer
Natural products are important from researchers’ perspectives due to their importance and applicability. Polyhydroxylated pyrrolizidine alkaloids are sugar mimics and received a growing interest in the last few years. Australine is a naturally polyhydroxylated pyrrolizidine, which was isolated from the seeds of Castanospermum austral, and exhibits potent biological activities such as inhibited glycosidases, as well as anti-virus, and anti-HIV activities. Thus, there is a considerable deal of interest in the synthesis of these classes of compounds. Different synthetic strategies and methodologies for the preparation of Australine and its stereoisomers were considered.
从研究人员的角度来看,天然产品具有重要的重要性和适用性。聚羟基吡咯烷酮生物碱是糖模拟物,近年来受到越来越多的关注。Australine是一种天然的多羟基吡咯烷酮,从澳大利亚卡斯塔诺斯珀姆种子中分离出来,具有强大的生物活性,如抑制糖苷酶、抗病毒和抗HIV活性。因此,人们对这类化合物的合成非常感兴趣。考虑了澳大拉嗪及其立体异构体的不同合成策略和方法。
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引用次数: 0
An Update with Recent Green Synthetic Approaches to Coumarins 香豆素绿色合成方法的最新进展
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-07-01 DOI: 10.2174/1570193x19666220701111051
Bhargav Bhimani, Ashish D. Patel, Drashti Shah
Coumarin and its derivatives are privileged heterocyclic motifs and important building blocks for developing the biologically active compound due to its significant role in the development of new drugs. As a result, many methodologies have been developed to synthesize this important class of compounds. However, some methods are associated with toxic and corrosive catalysts, longer reaction time, poor yield, less purity, and by-products along with the desired product. In order to minimize the utilization and generation of toxic organic substances, green synthetic methods are applied in this manner. Green chemistry methods cover a wide range of methods, including the application of ultrasound and microwaves, ionic liquids and deep eutectic solvents, solvent-free and catalyst-free synthesis, and mechanosynthesis. These green synthetic methods have successfully performed all typical condensation reactions for coumarin synthesis like Knoevenagel, Perkin, Kostanecki-Robinson, Pechmann, and Reformatsky reactions. Compared to conventional methods, these methods not only minimize the use and generation of harmful chemicals but also improve reaction efficiency in terms of product yields, purity, energy consumption, and post-synthetic procedures. Due to the implication of coumarin (2-oxo-2H-1-benzopyran) backbone as a biologically active ubiquitous fragment and the recent demands of reducing toxic solvents, catalysts, and energy consumption, this review summarized various green synthetic methods for coumarin synthesis. Moreover, researchers working on this coumarin scaffold synthesis can find handy information from this review on the green synthetic approaches to their synthesis.
香豆素及其衍生物在新药开发中发挥着重要作用,是开发生物活性化合物的特殊杂环基序和重要组成部分。因此,已经开发了许多方法来合成这类重要的化合物。然而,一些方法涉及有毒和腐蚀性催化剂、较长的反应时间、较差的产率、较低的纯度以及所需产物的副产物。为了最大限度地减少有毒有机物质的利用和产生,以这种方式应用了绿色合成方法。绿色化学方法涵盖了广泛的方法,包括超声波和微波、离子液体和深共晶溶剂、无溶剂和无催化剂合成以及机械合成的应用。这些绿色合成方法已经成功地进行了香豆素合成的所有典型缩合反应,如Knoevenagel、Perkin、Kostanecki-Robinson、Pechmann和Reformatsky反应。与传统方法相比,这些方法不仅最大限度地减少了有害化学物质的使用和产生,而且在产品产量、纯度、能耗和合成后程序方面提高了反应效率。鉴于香豆素(2-氧代-2H-1-苯并吡喃)骨架作为一种生物活性普遍存在的片段,以及近年来对减少有毒溶剂、催化剂和能源消耗的需求,本文综述了香豆素合成的各种绿色合成方法。此外,从事香豆素支架合成的研究人员可以从这篇综述中找到关于香豆素合成的绿色合成方法的方便信息。
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引用次数: 0
Chemistry of 2-Aminoquinolines: Synthesis, Reactivity, and Biological Activities (Part III). 2-氨基喹啉的化学:合成、反应性和生物活性(第三部分)。
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-06-29 DOI: 10.2174/1570193x19666220629103027
M. Gouda, G. G. El-Bana
This review described the preparation of 2-chloroquinoline-3-carbaldehyde derivatives through Vilsmeier-Haack formylation of N-arylacetamides and the use of them as a key intermediate for the preparation of 2-aminoquinoline-3-carbaldehydes. The synthesis of the 2-aminoquinolines was explained through the following chemical reactions: Claisen-Schmidt condensation, 1, 3-dipolar cycloaddition, one-pot multicomponent reactions (MCRs), and reductive amination.
本文综述了n -芳基乙酰酰胺的Vilsmeier-Haack甲酰化反应制备2-氯喹啉-3-醛衍生物,并将其作为合成2-氨基喹啉-3-醛的关键中间体。通过Claisen-Schmidt缩合反应、1,3 -偶极环加成反应、一锅多组分反应和还原胺化反应等化学反应解释了2-氨基喹啉类化合物的合成。
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引用次数: 0
A Review of Organic Dye Based Nanoparticles: Preparation, Properties, and Engineering/Technical Applications 有机染料纳米颗粒的制备、性能及工程技术应用综述
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-06-29 DOI: 10.2174/1570193x19666220629103920
Kapil Dev Mahato, U. Kumar
Organic dye-based nanoparticles (ODNPs) are fabricated with desired morphologies using laser ablation, reprecipitation, ion association, and self-assembly methods. Primitively, this review introduces the theory of the molecular origins of dye aggregation, manifestations of the formations of monomer to J-dimer, H-dimer, and oblique dimer (mixed J and H dimer) in ODNPs. Although, organic dye nanoparticles have better basic properties than their monomer counterparts. These nanoparticles are suitable candidates for many engineering and technical applications. Furthermore, we have discussed OLEDs, optoelectronics, sensing, environmental, light-harvesting antennas, cryptography, and biomedical imaging applications. The conclusion made from the critical review analysis opens up a new horizon for the future development of ODNPs applications.
采用激光烧蚀、再沉淀、离子结合和自组装等方法制备了具有理想形貌的有机染料基纳米颗粒。本文首先介绍了染料聚集的分子起源理论,ODNPs中单体形成J-二聚体、H-二聚体和斜二聚体(J和H混合二聚体)的表现。然而,有机染料纳米颗粒比它们的单体具有更好的基本性质。这些纳米颗粒是许多工程和技术应用的合适候选者。此外,我们还讨论了oled,光电子学,传感,环境,光收集天线,密码学和生物医学成像应用。批判性审查分析得出的结论为ODNPs应用的未来发展开辟了新的前景。
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引用次数: 1
Recent Progress on the Development and Application of Polymeric Nanofiltration Membranes: A Mini-Review 聚合物纳滤膜的开发与应用进展
IF 2.3 4区 化学 Q2 Chemistry Pub Date : 2022-06-23 DOI: 10.2174/1570193x19666220623151653
Fabiana Rodrigues de Almeida, Ivana Lourenço de Mello Ferreira, R. A. dos Reis
The inefficiency of conventional water treatment methods in terms of removing micropollutants is prompting research into other technologies. Among these, the process of separation by nanofiltration membranes is particularly promising because of the low operating cost, rapid implementation of the system, high selectivity and easy integration with other treatment processes. Studies in this area are recent and there are many avenues for future research. This mini-review describes the main characteristics of the polymeric membranes used for nanofiltration, and the various methods and polymer materials under investigation. At the end, we report the result of a survey conducted in the ScienceDirect, Scopus and Web of Science platforms using different keywords, to depict a global panorama of the current research involving polymeric nanofiltration membranes. The results revealed a particular dearth of published studies involving application of these membranes to remove micropollutants with endocrine disruptive action. Furthermore, research involving nanofiltration membranes utilizing calcium alginate is very recent. This study provides an overview of the investigation of polymeric nanofiltration membranes.
传统的水处理方法在去除微污染物方面效率低下,这促使人们对其他技术进行研究。其中,纳滤膜分离工艺特别有前景,因为其操作成本低,系统实施迅速,选择性高,易于与其他处理工艺集成。这一领域的研究是最近的,未来的研究有很多途径。这篇小型综述描述了用于纳滤的聚合物膜的主要特性,以及正在研究的各种方法和聚合物材料。最后,我们报告了在ScienceDirect、Scopus和Web of Science平台上使用不同关键词进行的一项调查结果,以描绘当前聚合物纳滤膜研究的全球全景。研究结果表明,很少有已发表的研究涉及应用这些膜去除具有内分泌破坏作用的微污染物。此外,利用海藻酸钙的纳滤膜的研究是非常新的。本研究综述了聚合物纳滤膜的研究进展。
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引用次数: 0
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Mini-reviews in Organic Chemistry
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