1
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Cazzaniga G, Tresoldi A, Gelain A, Meneghetti F, Mori M, Villa S. Eco-Friendly Bio-Based Solvents for the Acetylation of the Amino Group of Amino Acids. Chem Biodivers 2024; 21:e202301729. [PMID: 38241063 DOI: 10.1002/cbdv.202301729] [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: 11/03/2023] [Accepted: 01/19/2024] [Indexed: 02/07/2024]
Abstract
Nature-derived products, like juices and peel extracts of fruits and vegetables, have emerged in recent years as interesting and sustainable alternatives to traditional solvents in several synthetic applications. Herein, we present a green and fast method for the N-acetylation of amino acids, using several bio-based solvents (vinegar, tomato/kiwi/apple peel extracts, lemon juice, etc.). The high reactivity of the amino group is often a limitation in synthetic processes, making its protection a necessary step to achieve pure products and limit side reactions. Therefore, versatile, time-efficient procedures, minimal purification efforts, and good yields are desirable features for these transformations. Our new method meets all these criteria, offering a valuable and eco-friendly alternative to traditional approaches. In detail, we managed to obtain comparable yields to established setups, while improving safety and reducing the environmental impact of the overall process. Most notably, the milder conditions made it possible to avoid the use of running water (saving about 250 L/reaction) and electric-powered cooling devices.
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Affiliation(s)
- Giulia Cazzaniga
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Andrea Tresoldi
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Arianna Gelain
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Fiorella Meneghetti
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Matteo Mori
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Stefania Villa
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133, Milano, Italy
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2
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Capelli D, Cazzaniga G, Mori M, Laghezza A, Loiodice F, Quaglia M, Negro E, Meneghetti F, Villa S, Montanari R. Biological Screening and Crystallographic Studies of Hydroxy γ-Lactone Derivatives to Investigate PPARγ Phosphorylation Inhibition. Biomolecules 2023; 13:biom13040694. [PMID: 37189440 DOI: 10.3390/biom13040694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 03/31/2023] [Accepted: 04/17/2023] [Indexed: 05/17/2023] Open
Abstract
PPARγ represents a key target for the treatment of type 2 diabetes and metabolic syndrome. To avoid serious adverse effects related to the PPARγ agonism profile of traditional antidiabetic drugs, a new opportunity is represented by the development of molecules acting as inhibitors of PPARγ phosphorylation by the cyclin-dependent kinase 5 (CDK5). Their mechanism of action is mediated by the stabilization of the PPARγ β-sheet containing Ser273 (Ser245 in PPARγ isoform 1 nomenclature). In this paper, we report the identification of new γ-hydroxy-lactone-based PPARγ binders from the screening of an in-house library. These compounds exhibit a non-agonist profile towards PPARγ, and one of them prevents Ser245 PPARγ phosphorylation by acting mainly on PPARγ stabilization and exerting a weak CDK5 inhibitory effect.
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Affiliation(s)
- Davide Capelli
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Strada Provinciale 35d, n. 9-00010, Montelibretti, 34149 Rome, Italy
| | - Giulia Cazzaniga
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133 Milano, Italy
| | - Matteo Mori
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133 Milano, Italy
| | - Antonio Laghezza
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy
| | - Fulvio Loiodice
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", Via Orabona 4, 70125 Bari, Italy
| | - Martina Quaglia
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133 Milano, Italy
| | - Elisa Negro
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Strada Provinciale 35d, n. 9-00010, Montelibretti, 34149 Rome, Italy
| | - Fiorella Meneghetti
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133 Milano, Italy
| | - Stefania Villa
- Department of Pharmaceutical Sciences, University of Milan, Via L. Mangiagalli 25, 20133 Milano, Italy
| | - Roberta Montanari
- Istituto di Cristallografia, Consiglio Nazionale delle Ricerche, Strada Provinciale 35d, n. 9-00010, Montelibretti, 34149 Rome, Italy
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3
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Recent update on the role of N-methyl glycine as a building block for the construction of N-heterocyclic frameworks. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Yang MH, Russell JL, Mifune Y, Wang Y, Shi H, Moresco EMY, Siegwart DJ, Beutler B, Boger DL. Next-Generation Diprovocims with Potent Human and Murine TLR1/TLR2 Agonist Activity That Activate the Innate and Adaptive Immune Response. J Med Chem 2022; 65:9230-9252. [PMID: 35767437 DOI: 10.1021/acs.jmedchem.2c00419] [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
The diprovocims, a new class of toll-like receptor (TLR) agonists, bear no similarity to prior TLR agonists, act through a well-defined mechanism (TLR1/TLR2 agonist), exhibit exquisite structure-activity relationships, and display in vivo adjuvant activity. They possess potent and efficacious agonist activity toward human TLR1/TLR2 but modest agonism toward the murine receptor. A manner by which diprovocims can be functionalized without impacting hTLR1/TLR2 activity is detailed, permitting future linkage to antigenic, targeting, or delivery moieties. Improvements in both potency and its low efficacy in the murine system were also achieved, permitting more effective use in animal models while maintaining the hTLR1/TLR2 activity. The prototypical member diprovocim-X exhibits the excellent potency/efficacy of diprovocim-1 in human cells, displays substantially improved potency/efficacy in mouse macrophages, and serves as an adjuvant in mice when coadministered with a nonimmunogenic antigen, indicating stimulation of the adaptive as well as innate immune response.
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Affiliation(s)
- Ming-Hsiu Yang
- Department of Chemistry and the Skaggs Institute of Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Jamie L Russell
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Yuto Mifune
- Department of Chemistry and the Skaggs Institute of Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Ying Wang
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Hexin Shi
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Eva Marie Y Moresco
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Daniel J Siegwart
- Department of Biochemistry, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Bruce Beutler
- Center for the Genetics of Host Defense, University of Texas Southwestern Medical Center, Dallas, Texas 75390, United States
| | - Dale L Boger
- Department of Chemistry and the Skaggs Institute of Chemical Biology, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
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5
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de Souza AS, Ribeiro RCB, Costa DCS, Pauli FP, Pinho DR, de Moraes MG, da Silva FDC, Forezi LDSM, Ferreira VF. Menadione: a platform and a target to valuable compounds synthesis. Beilstein J Org Chem 2022; 18:381-419. [PMID: 35529893 PMCID: PMC9039524 DOI: 10.3762/bjoc.18.43] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/30/2022] [Indexed: 01/26/2023] Open
Abstract
Naphthoquinones are important natural or synthetic compounds belonging to the general class of quinones. Many compounds in this class have become drugs that are on the pharmaceutical market for the treatment of various diseases. A special naphthoquinone derivative is menadione, a synthetic naphthoquinone belonging to the vitamin K group. This compound can be synthesized by different methods and it has a broad range of biological and synthetic applications, which will be highlighted in this review.
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Affiliation(s)
- Acácio S de Souza
- Universidade Federal Fluminense, Departamento de Tecnologia Farmacêutica, Faculdade de Farmácia, R. Dr. Mario Vianna, 523, Santa Rosa, CEP 24241-002, Niterói-RJ, Brazil
| | - Ruan Carlos B Ribeiro
- Universidade Federal Fluminense, Departamento de Tecnologia Farmacêutica, Faculdade de Farmácia, R. Dr. Mario Vianna, 523, Santa Rosa, CEP 24241-002, Niterói-RJ, Brazil
| | - Dora C S Costa
- Department of Chemistry, CICECO – Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193, Aveiro, Portugal
| | - Fernanda P Pauli
- Universidade Federal Fluminense, Instituto de Química, Departamento de Química Orgânica, 24020-150 Niterói, RJ, Brazil
| | - David R Pinho
- Universidade Federal Fluminense, Instituto de Química, Departamento de Química Orgânica, 24020-150 Niterói, RJ, Brazil
| | - Matheus G de Moraes
- Universidade Federal Fluminense, Instituto de Química, Departamento de Química Orgânica, 24020-150 Niterói, RJ, Brazil
| | - Fernando de C da Silva
- Universidade Federal Fluminense, Instituto de Química, Departamento de Química Orgânica, 24020-150 Niterói, RJ, Brazil
| | - Luana da S M Forezi
- Universidade Federal Fluminense, Instituto de Química, Departamento de Química Orgânica, 24020-150 Niterói, RJ, Brazil
| | - Vitor F Ferreira
- Universidade Federal Fluminense, Departamento de Tecnologia Farmacêutica, Faculdade de Farmácia, R. Dr. Mario Vianna, 523, Santa Rosa, CEP 24241-002, Niterói-RJ, Brazil
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6
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Fang Z, Xie L, Wang L, Zhang Q, Li D. Silver-catalyzed cascade cyclization and functionalization of N-aryl-4-pentenamides: an efficient route to γ-lactam-substituted quinone derivatives. RSC Adv 2022; 12:26776-26780. [PMID: 36320855 PMCID: PMC9490777 DOI: 10.1039/d2ra05283k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 09/09/2022] [Indexed: 11/21/2022] Open
Abstract
The synthesis of γ-lactam-substituted quinone derivatives through a Ag2O-catalyzed cascade cyclization and functionalization of N-aryl-4-pentenamides has been developed. Related 2-oxazolidinone substituted quinone products can be also obtained with N-aryl allyl carbamates. The reactions proceed through an amidyl radical-initiated 5-exo-trig cyclization and followed radical addition to quinones. They provide an efficient route to various γ-lactam-substituted quinone derivatives with a wide range of substrate scope. The synthesis of γ-lactam and related 2-oxazolidinone substituted quinone derivatives through a Ag2O-catalyzed cascade cyclization and functionalization of N-ary-4-pentenamides and N-aryl allyl carbamates has been developed.![]()
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Affiliation(s)
- Zeguo Fang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, China
| | - Lin Xie
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
| | - Liang Wang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
| | - Qian Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, China
| | - Dong Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, China
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7
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Donzel M, Karabiyikli D, Cotos L, Elhabiri M, Davioud‐Charvet E. Direct C−H Radical Alkylation of 1,4‐Quinones. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Maxime Donzel
- UMR7042 Université de Strasbourg-CNRS-UHA Laboratoire d'Innovation Moléculaire et Applications (LIMA) Team Bio (IN) organic and Medicinal Chemistry European School of Chemistry, Polymers and Materials (ECPM) 25 Rue Becquerel Strasbourg 67087 France
| | - Deniz Karabiyikli
- UMR7042 Université de Strasbourg-CNRS-UHA Laboratoire d'Innovation Moléculaire et Applications (LIMA) Team Bio (IN) organic and Medicinal Chemistry European School of Chemistry, Polymers and Materials (ECPM) 25 Rue Becquerel Strasbourg 67087 France
| | - Leandro Cotos
- UMR7042 Université de Strasbourg-CNRS-UHA Laboratoire d'Innovation Moléculaire et Applications (LIMA) Team Bio (IN) organic and Medicinal Chemistry European School of Chemistry, Polymers and Materials (ECPM) 25 Rue Becquerel Strasbourg 67087 France
| | - Mourad Elhabiri
- UMR7042 Université de Strasbourg-CNRS-UHA Laboratoire d'Innovation Moléculaire et Applications (LIMA) Team Bio (IN) organic and Medicinal Chemistry European School of Chemistry, Polymers and Materials (ECPM) 25 Rue Becquerel Strasbourg 67087 France
| | - Elisabeth Davioud‐Charvet
- UMR7042 Université de Strasbourg-CNRS-UHA Laboratoire d'Innovation Moléculaire et Applications (LIMA) Team Bio (IN) organic and Medicinal Chemistry European School of Chemistry, Polymers and Materials (ECPM) 25 Rue Becquerel Strasbourg 67087 France
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8
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Liu RH, He YH, Yu W, Zhou B, Han B. Silver-Catalyzed Site-Selective Ring-Opening and C-C Bond Functionalization of Cyclic Amines: Access to Distal Aminoalkyl-Substituted Quinones. Org Lett 2019; 21:4590-4594. [PMID: 31184916 DOI: 10.1021/acs.orglett.9b01496] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Distal aminoalkyl-substituted quinones have been efficiently prepared through silver-catalyzed site-selective deconstruction and C-C bond transformation of unstrained N-acylated cyclic amines. This method enjoys mild reaction conditions, high selectivity, a broad scope of substrates, and a low catalytic loading of silver. This strategy can also be applied to the modification of peptides bearing cyclic amine residues.
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Affiliation(s)
- Rui-Hua Liu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Yi-Heng He
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering , Lanzhou University , Lanzhou 730000 , People's Republic of China
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9
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Wang Q, Wang B, Deng H, Shangguan Y, Lin Y, Zhang Y, Zhang Z, Xiao Y, Guo H, Zhang C. Silver-Catalyzed Three-Component Difunctionalization of Alkenes via Radical Pathways: Access to CF3-Functionalized Alkyl-Substituted 1,4-Naphthoquinone Derivatives. J Org Chem 2018; 84:1006-1014. [PMID: 30592606 DOI: 10.1021/acs.joc.8b02997] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Qijun Wang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Bo Wang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Hao Deng
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yu Shangguan
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yan Lin
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yaqi Zhang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Zheming Zhang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Yumei Xiao
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Hongchao Guo
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
| | - Cheng Zhang
- Department of Applied Chemistry, China Agricultural University, 2 Yuanmingyuan West Road, Beijing 100193, China
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10
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Proctor RSJ, Davis HJ, Phipps RJ. Catalytic enantioselective Minisci-type addition to heteroarenes. Science 2018; 360:419-422. [DOI: 10.1126/science.aar6376] [Citation(s) in RCA: 288] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 02/28/2018] [Indexed: 12/31/2022]
Abstract
Basic heteroarenes are a ubiquitous feature of pharmaceuticals and bioactive molecules, and Minisci-type additions of radical nucleophiles are a leading method for their elaboration. Despite many Minisci-type protocols that result in the formation of stereocenters, exerting control over the absolute stereochemistry at these centers remains an unmet challenge. We report a process for addition of prochiral radicals, generated from amino acid derivatives, to pyridines and quinolines. Our method offers excellent control of both enantioselectivity and regioselectivity. An enantiopure chiral Brønsted acid catalyst serves both to activate the substrate and induce asymmetry, while an iridium photocatalyst mediates the required electron transfer processes. We anticipate that this method will expedite access to enantioenriched small-molecule building blocks bearing versatile basic heterocycles.
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Affiliation(s)
| | - Holly J. Davis
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
| | - Robert J. Phipps
- Department of Chemistry, University of Cambridge, Cambridge CB2 1EW, UK
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11
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da Silva Júnior EN, Jardim GAM, Gomes RS, Liang YF, Ackermann L. Weakly-coordinating N-oxide and carbonyl groups for metal-catalyzed C–H activation: the case of A-ring functionalization. Chem Commun (Camb) 2018; 54:7398-7411. [DOI: 10.1039/c8cc03147a] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This feature review is focused on recent challenges based on the functionalizations at C-8 and C-5 positions of heterocyclic and quinoidal compounds – a topic that is still rarely explored in the literature.
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Affiliation(s)
| | - Guilherme A. M. Jardim
- Institute of Exact Sciences
- Department of Chemistry
- Federal University of Minas Gerais
- Belo Horizonte
- Brazil
| | - Roberto S. Gomes
- Faculty of Exact Sciences and Technologies
- Federal University of Grande Dourados
- Dourados
- Brazil
- Department of Chemistry and Chemical Biology
| | - Yu-Feng Liang
- Institut für Organische und Biomolekulare Chemie
- Georg-August-Universität Göttingen
- Gottingen 37077
- Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie
- Georg-August-Universität Göttingen
- Gottingen 37077
- Germany
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12
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Convenient, scalable synthesis of 2-methyl-3-(3′,3′-carboxymethylpropyl)-1,4-naphthoquinone, the principal vitamin K urinary metabolite. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Mansha M, Ullah N, Alhooshani K. Synthesis of structural analogues of GGT1-DU40, a potent GGTase-1 inhibitor. ZEITSCHRIFT FUR NATURFORSCHUNG SECTION B-A JOURNAL OF CHEMICAL SCIENCES 2016. [DOI: 10.1515/znb-2016-0019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
A series of new substituted pyrazoles 2–12 have been synthesized. The synthesized compounds are structural analogues of GGT1-DU40 1, a highly potent and selective inhibitor of protein geranylgeranyltransferase I (GGTase-I) both in vitro and in vivo. The implications of GGTase-I in oncogenesis have highlighted its potential as a cancer therapeutic target. Accordingly, the development of GGTase-I inhibitors has been a subject of much interest. The synthesis of 2–12 stemmed from the acetylation or acylation of N-function of amino acids to produce suitably modified amino acids. Meanwhile, the substituted pyrazole subunit originated from the reaction of ethyl nicotinate with γ-butyrolactone followed by condensation of the resultant β-keto lactone with (3,4-dichlorophenyl)hydrazine. The operations of O-alkylation and thioetherification on the resultant intermediate eventually produced the substituted pyrazole fragment. The amidation of the latter with amino acid derivatives finally rendered 2–12 in good to excellent yields.
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Affiliation(s)
| | - Nisar Ullah
- Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
| | - Khalid Alhooshani
- Chemistry Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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14
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Devari S, Shah BA. Visible light-promoted C–H functionalization of ethers and electron-deficient arenes. Chem Commun (Camb) 2016; 52:1490-3. [DOI: 10.1039/c5cc08817h] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Photocatalyst-free visible-light-mediated C–H arylation of ethers via C(Sp2)–C(Sp3) C–H functionalization involving hydrogen atom transfer (HAT) pathway.
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Affiliation(s)
- Shekaraiah Devari
- Academy of Scientific and Innovative Research
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
- Natural Product Microbes
| | - Bhahwal Ali Shah
- Academy of Scientific and Innovative Research
- CSIR-Indian Institute of Integrative Medicine
- Jammu-Tawi
- India
- Natural Product Microbes
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15
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Naujorks AADS, da Silva AO, Lopes RDS, de Albuquerque S, Beatriz A, Marques MR, de Lima DP. Novel naphthoquinone derivatives and evaluation of their trypanocidal and leishmanicidal activities. Org Biomol Chem 2015; 13:428-37. [DOI: 10.1039/c4ob01869a] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel naphthoquinone derivatives were synthesized and tested for trypanocidal and leishmanicidal activities. Compound 11a was the most active against T. cruzi.
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Affiliation(s)
- Aline Alves dos Santos Naujorks
- Programa de Pós-Graduação em Farmácia
- Centro de Ciências Biológicas e da Saúde
- Universidade Federal de Mato Grosso do Sul
- Campo Grande
- Brazil
| | | | | | - Sérgio de Albuquerque
- Departamento de Análises Clínicas
- Toxicológicas e Bromatológicas
- Faculdade de Ciências Farmacêuticas de Ribeirão Preto
- USP
- Ribeirão Preto
| | - Adilson Beatriz
- Instituto de Química (LP4)
- Universidade Federal de Mato Grosso do Sul
- Campo Grande
- Brazil
| | - Maria Rita Marques
- Centro de Ciências Biológicas e da Saúde
- Laboratório de Bioquímica
- Universidade Federal de Mato Grosso do Sul
- Campo Grande
- Brazil
| | - Dênis Pires de Lima
- Instituto de Química (LP4)
- Universidade Federal de Mato Grosso do Sul
- Campo Grande
- Brazil
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16
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Moustafa GAI, Saku Y, Aoyama H, Yoshimitsu T. A new route to platencin via decarboxylative radical cyclization. Chem Commun (Camb) 2014; 50:15706-9. [PMID: 25361063 DOI: 10.1039/c4cc07316a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new approach to platencin, a potent antibiotic isolated from Streptomyces platensis, has been established. The highly congested tricyclic core of the natural product was successfully constructed by decarboxylative radical cyclization of an alkynyl silyl ester with Pb(OAc)4 in the presence of pyridine in refluxing 1,4-dioxane. The key decarboxylation, which likely takes place via lead(IV) esterification followed by carbon-centered radical generation and subsequent capture of the radical with a triple bond, allows the rapid construction of the twisted polycyclic system.
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Affiliation(s)
- Gamal A I Moustafa
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Deb A, Agasti S, Saboo T, Maiti D. Generation of Arylated Quinones by Iron-Catalyzed Oxidative Arylation of Phenols: Formal Synthesis of Phellodonin, Sarcodonin ε, Leucomelone and Betulinan A. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301084] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Gold-catalyzed cascade C–C and C–N bond formation: synthesis of polysubstituted indolequinones and pyrroles. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.100] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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