1
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Belikov MY, Milovidova AG, Ievlev MY, Fedoseev SV. Synthesis of the first 4-oxobutane-1,1,2,2-tetracarbonitriles containing a phenol fragment and their transformation into cyano-substituted pyrrol-2-ones showing three-position molecular switching. Org Biomol Chem 2024; 22:4757-4765. [PMID: 38804092 DOI: 10.1039/d4ob00612g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2024]
Abstract
The first example of the synthesis of 4-oxobutane-1,1,2,2-tetracarbonitriles (OTCs) containing a phenolic moiety has been described. The synthesis is based on the reaction between tetracyanoethylene and 4-hydroxyphenyl-substituted ketones under mild conditions. Due to the presence of a phenolic hydroxyl group, these compounds are more functionalized derivatives of the well-known OTC substrates used for diversity-oriented synthesis (DOS). The preserved synthetic potential of the OTCs for the preparation of phenol-containing derivatives with enhanced capabilities for tuning optical properties has been shown using the targeted synthesis of 2-(2-oxo-1,2-dihydro-3H-pyrrol-3-ylidene)malononitriles. Based on the obtained pyrroles and a model amine (pyrrolidine) a previously unknown type of thermosensitive three-position molecular switch is described. Reversible color changes of the dye are shown in both solution and on filter paper. The results reveal a new research branch of the OTC-based DOS strategy to access functionalized phenol-containing derivatives.
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Affiliation(s)
- Mikhail Yu Belikov
- Ulyanov Chuvash State University, Moskovsky pr., 15, Cheboksary, Russia.
| | | | - Mikhail Yu Ievlev
- Ulyanov Chuvash State University, Moskovsky pr., 15, Cheboksary, Russia.
| | - Sergey V Fedoseev
- Ulyanov Chuvash State University, Moskovsky pr., 15, Cheboksary, Russia.
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2
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Yavari I, Taheri Z, Sheikhi S. A synthesis of functionalized 3-amino-1,2,4-triazoles from nitrile imines and guanidine derivatives. Mol Divers 2024; 28:11-18. [PMID: 35842885 DOI: 10.1007/s11030-022-10471-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/30/2022] [Indexed: 11/30/2022]
Abstract
A regioselective synthesis of trisubstituted 1,2,4-triazoles through reaction of nitrile imines with guanidine derivatives is described. These 1,3-dipolar cycloaddition reactions proceeded smoothly in moderate to good yields and excellent regioselectivity under ambient conditions. This method provides fast access to a range of functionalized 3-amino-1,2,4-triazoles.
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Affiliation(s)
- Issa Yavari
- Department of Chemistry, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran.
| | - Zohreh Taheri
- Department of Chemistry, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran
| | - Sara Sheikhi
- Department of Chemistry, Tarbiat Modares University, PO Box 14115-175, Tehran, Iran
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3
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Xia Y, Tang M, Zhang Q, Yu W. Dearomatization of Pyridines: Stereoselective Synthesis of Functionalized [1,2,4]Triazolo[4,3- a]pyridines. Org Lett 2023; 25:9087-9091. [PMID: 38112501 DOI: 10.1021/acs.orglett.3c03060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2023]
Abstract
The stereoselective preparation of functionalized [1,2,4]triazolo[4,3-a]pyridines from N-tosylhydrazones and pyridines was developed through the dearomatization of pyridines. The current transformation features good step- and atom-economy, high diastereoselectivity, and the efficient formation of four new carbon-heteroatom bonds in the corresponding product tetrahydro pyridines.
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Affiliation(s)
- Yiwen Xia
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Meng Tang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Qian Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Wentao Yu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
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4
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Zhang Q, Tang M. Correction to "Regioselective Synthesis of Highly Functionalized Pyrazoles from N-Tosylhydrazones". Org Lett 2023; 25:7268-7269. [PMID: 37733642 DOI: 10.1021/acs.orglett.3c02841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
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5
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Moussa Z, Perez Paz A, Khalaf MA, Judeh ZMA, Alzamly A, Samadi A, Al-Fahemi JH, Tatina MB, Al-Masri HT, Jassas RS, Ahmed SA. First Exclusive Stereo- and Regioselective Preparation of 5-Arylimino-1,3,4-Selenadiazole Derivatives: Synthesis, NMR analysis, and Computational Studies. Chem Asian J 2023; 18:e202300475. [PMID: 37495559 DOI: 10.1002/asia.202300475] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Revised: 07/14/2023] [Accepted: 07/24/2023] [Indexed: 07/28/2023]
Abstract
Isoselenocyanates are valuable coupling partners required for preparing key chemical intermediates and biologically active molecules in an accelerated and effective way. Likewise, (Z)-2-oxo-N-phenylpropanehydrazonoyl chlorides have been employed in numerous one-step heteroannulation reactions to assemble the structural core of several various kinds of heterocyclic compounds. Here, we describe the inverse electron demand 1,3-dipolar cycloaddition reaction of isoselenocyanates with a variety of substituted (Z)-2-oxo-N-phenylpropanehydrazonoyl chlorides to generate, regioselectively and stereoselectively, a series of 5-arylimino-1,3,4-selenadiazole derivatives comprising a multitude of functional groups on both aryl rings. The synthetic method features gentle room-temperature conditions, wide substrate scope, and good to high reaction yields. The selenadiazoles were separated by gravity filtration in all instances and chemical structures were validated by multinuclear NMR spectroscopy and high accuracy mass spectral measurements. First conclusive molecular structure elucidation of the observed 5-arylimino-selenadiazole regioisomer was verified by single-crystal X-ray diffraction analysis. Crystal-structure measurement was successfully carried out on (Z)-1-(4-(4-iodophenyl)-5-(p-tolylimino)-4,5-dihydro-1,3,4-selenadiazol-2-yl)ethan-1-one and (Z)-1-(5-((4-methoxyphenyl)imino)-4-(4-(methylthio)phenyl)-4,5-dihydro-1,3,4-selenadiazol-2-yl)ethan-1-one. Likewise, the (Z)-geometry of the hydrazonoyl chloride reactant was proven by X-ray diffraction studies. As representative examples, crystal-structure determination was carried out on (Z)-2-oxo-N-phenylpropanehydrazonoyl chloride and (Z)-N-(3,5-bis(trifluoromethyl)phenyl)-2-oxopropanehydrazonoyl chloride. Density functional theory calculations at the B3LYP-D4/def2-TZVP level were conducted to support the noted experimental findings and suggested mechanism.
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Affiliation(s)
- Ziad Moussa
- Department of Chemistry, College of Science, United Arab Emirates University, P. O. Box 15551, Al Ain, United Arab Emirates
| | - Alejandro Perez Paz
- Department of Chemistry, College of Science, United Arab Emirates University, P. O. Box 15551, Al Ain, United Arab Emirates
| | - Mohamed A Khalaf
- Department of Chemistry, College of Science, United Arab Emirates University, P. O. Box 15551, Al Ain, United Arab Emirates
| | - Zaher M A Judeh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, N1.2-B1-14, Singapore, 637459, Singapore
| | - Ahmed Alzamly
- Department of Chemistry, College of Science, United Arab Emirates University, P. O. Box 15551, Al Ain, United Arab Emirates
| | - Abdelouahid Samadi
- Department of Chemistry, College of Science, United Arab Emirates University, P. O. Box 15551, Al Ain, United Arab Emirates
| | - Jabir H Al-Fahemi
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
| | - Madhu Babu Tatina
- Division of Organic Synthesis & Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad, Telangana, 500007, India
| | - Harbi Tomah Al-Masri
- Department of Chemistry, Faculty of Sciences, Al al-Bayt University, P. O. Box 130040, Mafraq, 25113, Jordan
| | - Rabab S Jassas
- Department of Chemistry, Jamoum University College, Umm Al-Qura University, 21955, Makkah, Saudi Arabia
| | - Saleh A Ahmed
- Department of Chemistry, Faculty of Applied Sciences, Umm Al-Qura University, Makkah, 21955, Saudi Arabia
- Department of Chemistry, Faculty of Science, Assiut University, 71516, Assiut, Egypt
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6
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Yang M, Jiang R, Mu Y, Hong Y, Wan Y, Hou J, Tang D. Electrochemical cycloaddition of hydrazones with cyanamide for the synthesis of substituted 5-amine-1,2,4-triazoles. Chem Commun (Camb) 2023; 59:2303-2306. [PMID: 36745484 DOI: 10.1039/d2cc06277a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
An eco-friendly and efficient electrochemical method for the synthesis of 5-amine-1,2,4-triazole derivatives has been developed by employing hydrazones or in situ generation of hydrazones with cyanamide using KI as the catalyst and electrolyte. This strategy could be smoothly conducted with simple reaction conditions at room temperature without the addition of a chemical oxidant in an undivided cell, and cyanamide has been proven to be of great value in electrosynthesis.
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Affiliation(s)
- Minghua Yang
- Department of Chemical and Material Engineering, Quzhou College of Technology, No. 18 Jiangyuan Road, Quzhou 324002, Zhejiang, China
| | - Rui Jiang
- Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and ForestryScience, Yinchuan, P. R. China.
| | - Yangxiu Mu
- Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and ForestryScience, Yinchuan, P. R. China.
| | - Yu Hong
- Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and ForestryScience, Yinchuan, P. R. China.
| | - Yaya Wan
- Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and ForestryScience, Yinchuan, P. R. China.
| | - Jing Hou
- Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and ForestryScience, Yinchuan, P. R. China.
| | - Dong Tang
- Department of Chemical and Material Engineering, Quzhou College of Technology, No. 18 Jiangyuan Road, Quzhou 324002, Zhejiang, China.,Institute of Agricultural Resources and Environment, Ningxia Academy of Agriculture and ForestryScience, Yinchuan, P. R. China.
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7
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Palladium-Catalyzed Synthesis of Novel Quinazolinylphenyl-1,3,4-thiadiazole Conjugates. Catalysts 2022. [DOI: 10.3390/catal12121586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Two novel series of symmetrical and unsymmetrical conjugates, in which 1,3,4-thiadiazole and 4-N,N-dimethylaminoquinazoline scaffolds were connected via 1,4-phenylene linker, were synthetized in high yields by Suzuki cross-coupling reactions. The elaborated protocol makes use of bromo-substituted quinazolines, boronic acid pinacol ester or diboronic acid bis(pinacol)ester of 2,5-diphenyl-1,3,4-thiadiazole, catalytic amounts of [1,10-bis(diphenylphosphino)ferrocene]dichloropalladium(II) Pd(dppf)Cl2, sodium carbonate, and tetrabutylammonium bromide, which plays the role of a phase-transfer catalyst. The structures of prepared compounds were confirmed by 1H NMR, 13C NMR, UV-VIS, IR and HRMS. For the target compounds, the fluorescence spectra were measured to determine their quantum yields and Stokes shifts. The study revealed that among the tested compounds, two highly-conjugated derivatives (8a, 9a), in which 1,3,4-thiadiazole core is connected to 4-(N,N-dimethylamino)quinazoline via a double 1,4-phenylene linker, exhibit high quantum yields of fluorescence and strong fluorescence emission.
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8
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Arab M, Beyzaei H, Aryan R. One‐Pot Synthesis of 3‐Amino‐1,2,4‐triazoles Using Choline Chloride‐Urea and Their Antibacterial Activities. ChemistrySelect 2022. [DOI: 10.1002/slct.202203291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mostafa Arab
- Department of Chemistry University of Zabol Zabol 3rd km of Bonjar Road
| | - Hamid Beyzaei
- Department of Chemistry University of Zabol Zabol 3rd km of Bonjar Road
| | - Reza Aryan
- Department of Chemistry University of Zabol Zabol 3rd km of Bonjar Road
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9
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Li Y, Cheng S, Tian Y, Zhang Y, Zhao Y. Recent ring distortion reactions for diversifying complex natural products. Nat Prod Rep 2022; 39:1970-1992. [PMID: 35972343 DOI: 10.1039/d2np00027j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Covering: 2013-2022.Chemical diversification of natural products is an efficient way to generate natural product-like compounds for modern drug discovery programs. Utilizing ring-distortion reactions for diversifying natural products would directly alter the core ring systems of small molecules and lead to the production of structurally complex and diverse compounds for high-throughput screening. We review the ring distortion reactions recently used in complexity-to-diversity (CtD) and pseudo natural products (pseudo-NPs) strategies for diversifying complex natural products. The core ring structures of natural products are altered via ring expansion, ring cleavage, ring edge-fusion, ring spiro-fusion, ring rearrangement, and ring contraction. These reactions can rapidly provide natural product-like collections with properties suitable for a wide variety of biological and medicinal applications. The challenges and limitations of current ring distortion reactions are critically assessed, and avenues for future improvements of this rapidly expanding field are discussed. We also provide a toolbox for chemists for the application of ring distortion reactions to access natural product-like molecules.
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Affiliation(s)
- Yu Li
- School of Pharmacy, Nantong University, Nantong 226001, China.
| | - Shihao Cheng
- School of Pharmacy, Nantong University, Nantong 226001, China.
| | - Yun Tian
- School of Pharmacy, Nantong University, Nantong 226001, China.
| | - Yanan Zhang
- School of Pharmacy, Nantong University, Nantong 226001, China.
| | - Yu Zhao
- School of Pharmacy, Nantong University, Nantong 226001, China.
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10
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Wang CC, Wang XL, Ding D, Ma ZW, Liu Z, Chen XP, Chen YJ. Efficient Construction of Tetracyclic 1,2,4‐triazoline‐Fused Dibenzo[b,f][1,4]oxazepines through KI/TBHP‐Mediated [3+2] Annulation between DBO‐Imines and N‐Tosylhydrazones. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200888] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Chuan-Chuan Wang
- Henan University of Animal Husbandry and Economy Faculty of Science CHINA
| | - Xin-Lu Wang
- Zhengzhou University School of Pharmaceutical Sciences CHINA
| | - Degang Ding
- Henan University of Animal Husbandry and Economy Faculty of Science CHINA
| | - Zhi-Wei Ma
- Henan University of Animal Husbandry and Economy Faculty of Science CHINA
| | - Zhijing Liu
- Henan University of Animal Husbandry and Economy Faculty of Science CHINA
| | - Xiao-Pei Chen
- Henan University of Animal Husbandry and Economy Faculty of Science CHINA
| | - Ya-Jing Chen
- Zhengzhou University School of Pharmaceutical Sciences 100 Science Avenue 450001 Zhengzhou CHINA
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11
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Saeed S, Zahoor AF, Ahmad M, Anjum MN, Akhtar R, Shahzadi I. Synthetic methodologies for the construction of selenium-containing heterocycles: a review. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2022.2091566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Sadaf Saeed
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Ameer Fawad Zahoor
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Matloob Ahmad
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Muhammad Naveed Anjum
- Department of Applied Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Rabia Akhtar
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
| | - Irum Shahzadi
- Department of Chemistry, Government College University Faisalabad, Faisalabad, Pakistan
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12
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Pilania M, Vaishya V, Singhal R, Kriplani T. Recent Advances in Transition-Metal-Catalyzed Reactions of N-Tosylhydrazones. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/s-0040-1719930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Abstract
N-Tosylhydrazones are highly versatile precursors for in situ carbene formation and are frequently used in metal-catalyzed cross-coupling reactions. Due to their many applications in organic synthesis, including C–C, C–O, C–N, and C–S bond formation, N-tosylhydrazones have recently received much interest. They can be simply synthesized by reacting an aldehyde or ketone with N-tosylhydrazine to produce a solid N-tosylhydrazone, which is a ‘green’ precursor of diazo compounds. Using a suitable metal catalyst, N-tosylhydrazones show versatile substrate scope for the synthesis of substituted diaminopyrroles, chromenopyrazoles, alkenylpyrazoles, benzofuran thioethers, tetrahydropyridazines, sulfur-containing heterocycles, and benzofurans with potent biological activities and even regioselective N-functionalization reactions. Metal-catalyzed reactions of N-tosylhydrazones for the construction of bioactive heterocycles are still highly in demand. Hence, this review focuses on the recent synthetic application of N-tosylhydrazones influenced by different transition metals with notable features like simple workup procedures, gram-scale synthesis, broad substrate scope, multicomponent processes, cyclization, and carbon–heteroatom bond formation.1 Introduction2 Applications of N-Tosylhydrazones3 Conclusion
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13
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Singhal R, Choudhary SP, Malik B, Pilania M. Emerging Trends in
N
‐Tosylhydrazone Mediated Transition‐Metal‐Free Reactions. ChemistrySelect 2022. [DOI: 10.1002/slct.202200134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rakshanda Singhal
- Department of Chemistry Manipal University Jaipur Off Jaipur-Ajmer Express Way Jaipur Rajasthan India 303007
| | - Satya Prakash Choudhary
- Department of Chemistry Manipal University Jaipur Off Jaipur-Ajmer Express Way Jaipur Rajasthan India 303007
| | - Babita Malik
- Department of Chemistry Manipal University Jaipur Off Jaipur-Ajmer Express Way Jaipur Rajasthan India 303007
| | - Meenakshi Pilania
- Department of Chemistry Manipal University Jaipur Off Jaipur-Ajmer Express Way Jaipur Rajasthan India 303007
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Zhang Q, Zhang S, Tang M. Method for Preparing N-Tosylhydrazonyl Chlorides. J Org Chem 2022; 87:6393-6396. [PMID: 35417162 DOI: 10.1021/acs.joc.2c00191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A facile and efficient method for preparing N-tosylhydrazonyl chlorides was developed. The reaction was general for a variety of substrates and displayed wonderful compatibility to diverse substituents. A range of N-tosylhydrazonyl chlorides was prepared for the first time.
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Affiliation(s)
- Qian Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Siyu Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Meng Tang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
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15
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Bhagat DS, Bumbrah GS, Chawla PA, Gurnule WB, Shejul SK. Recent advances in synthesis and anticancer potential of triazole containing scaffolds. Anticancer Agents Med Chem 2022; 22:2852-2875. [PMID: 35176982 DOI: 10.2174/1871520622666220217161346] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/20/2021] [Accepted: 12/20/2021] [Indexed: 11/22/2022]
Abstract
Cancer is the most lethal disease that may be found anywhere on the globe. Approximately 10% of individuals die as a result of cancer of various types, with 19.3 million new cancer cases and 10 million deaths expected in 2020. More than 100 medications are commercially available for the treatment of cancer, but only a few candidates have high specificity, resulting in several side effects. The scientific community has spent the past decades focusing on drug discovery. Natural resources are used to isolate pharmaceutically active candidates, which are then synthesized in laboratories. More than 60% of all prescribed drugs are made from natural ingredients. Unique five-membered heteroaromatic center motifs with sulfur, oxygen and nitrogen atoms are found in heterocyclic compounds such as indazole, thiazole, triazole, triazole, and oxazole, and are used as a core scaffold in many medicinally important therapies. Triazole possesses a wide range of pharmacological activities including anticancer, antibacterial, antifungal, antibiotic antiviral, analgesic, anti-inflammatory, anti-HIV, antidiabetic, and antiprotozoal activities. Novel Triazole motifs with a variety of biological characteristics have been successfully synthesized using versatile synthetic methods. We intend here to facilitate the rational design and development of innovative triazole-based anti-cancer medicines with increased selectivity for various cancer cell lines by providing insight into various ligand-receptor interactions.
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Affiliation(s)
- Devidas S Bhagat
- Department of Forensic Chemistry and Toxicology, Government Institute of Forensic Science, Aurangabad 431 004, (MS), India
| | - Gurvinder S Bumbrah
- Department of Chemistry, Biochemistry and Forensic Science, Amity School of Applied Sciences, Amity University, 122413, Haryana, India
| | - Pooja A Chawla
- Department of Pharmaceutical Chemistry and Analysis, ISF College of Pharmacy, Moga 142001, Punjab, India
| | - Wasudeo B Gurnule
- Department of Chemistry, Kamla Nehru Mahavidyalaya, Nagpur-440024, (MS) India
| | - Sampada K Shejul
- Department of Life Science, Vivekanand Arts, Sardar Dalipsingh Commerce and Science College, Aurangabad 431 001, (MS), India
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Zhang S, Zhang Q, Tang M. Synthesis of Hydrazides from N-Tosylhydrazones and Its Application in the Preparation of Indazolones. J Org Chem 2022; 87:3845-3850. [PMID: 35084186 DOI: 10.1021/acs.joc.1c03037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We have developed a facile synthesis of hydrazides from N-tosylhydrazones under metal-free conditions. The reactions were suitable for different substrates and had excellent tolerance to various substituents. Meanwhile, a series of indazolones could be prepared from corresponding o-bromobenzohydrazides under mild conditions.
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Affiliation(s)
- Siyu Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Qian Zhang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
| | - Meng Tang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China
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17
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Lv Y, Meng J, Li C, Wang X, Ye Y, Sun K. Update on the Synthesis of N‐Heterocycles via Cyclization of Hydrazones (2017–2021). Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101184] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Yunhe Lv
- College of Chemistry and Chemical Engineering Anyang Normal University Anyang 4550008 People's Republic of China
| | - Jianping Meng
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
| | - Chen Li
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
| | - Xin Wang
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
| | - Yong Ye
- College of Chemistry Zhengzhou University Zhengzhou 450001 People's Republic of China
| | - Kai Sun
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 People's Republic of China
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Zhang J, She M, Liu L, Feng X, Li Y, Liu H, Zheng T, Leng X, Liu P, Zhang S, Li J. Selective Thiocyanation and Aromatic Amination To Achieve Organized Annulation of Enaminone with Thiocyanate. Org Lett 2021; 23:8396-8401. [PMID: 34694822 DOI: 10.1021/acs.orglett.1c03129] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A tandem insertion of thiocyanate to enamine was performed for the regioselective synthesis of multisubstituted benzoimidazo[2,1-b]thiazoles. This method was shown to be effective in addressing the issue of isomerization encountered in common strategies. With a change made to the leading group on the aniline fragment of enamine, the reaction achieved different transformations, thus enabling multisubstituted benzo[4,5]imidazo[2,1-b]thiazoles and thiazoles in satisfactory yields.
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Affiliation(s)
- Jun Zhang
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Mengyao She
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China.,Laboratory of Tissue Engineering, Provincial Key Laboratory of Biotechnology of Shaanxi, Ministry of Education Key Laboratory of Resource Biology and Modern Biotechnology, The College of Life Sciences, Faculty of Life and Health Science, Northwest University, Xi'an, Shaanxi 710069, People's Republic of China
| | - Lang Liu
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Xukai Feng
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Yao Li
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Hua Liu
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Tingting Zheng
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Xin Leng
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Ping Liu
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Shengyong Zhang
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
| | - Jianli Li
- Ministry of Education Key Laboratory of Synthetic and Natural Functional Molecule Chemistry, College of Chemistry & Materials Science, Northwest University, Xi'an, Shaanxi 710127, People's Republic of China
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Obakachi VA, Kushwaha B, Kushwaha ND, Mokoena S, Ganai AM, Pathan TK, van Zyl WE, Karpoormath R. Synthetic and anti-cancer activity aspects of 1, 3, 4-thiadiazole containing bioactive molecules: A concise review. J Sulphur Chem 2021. [DOI: 10.1080/17415993.2021.1963441] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Vincent A. Obakachi
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Babita Kushwaha
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Narva Deshwar Kushwaha
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Sithabile Mokoena
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Ab Majeed Ganai
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Tabasum Khan Pathan
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Werner E. van Zyl
- School of Chemistry and Physics, University of KwaZulu-Natal, Durban, South Africa
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry, Discipline of Pharmaceutical Sciences, College of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
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