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Jeon H, Kim JH, Kim S. Recent asymmetric synthesis of natural products bearing an α-tertiary amine moiety via temporary chirality induction strategies. Nat Prod Rep 2024; 41:228-250. [PMID: 37846620 DOI: 10.1039/d3np00032j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2023]
Abstract
Covering: 2013 to 2023The α-tertiary amine moiety is a common structural motif in natural alkaloids and is frequently associated with intriguing biological activities and inherent synthetic challenges. A major hurdle in the total synthesis of these alkaloids is the asymmetric construction of the α-tertiary amine moiety. Temporary chirality inductions have been effective strategies employed to address this issue, particularly in natural product synthesis. The temporary chirality induction strategies in α-tertiary amine synthesis can be broadly classified into three categories based on the types of temporary chirality involved: Seebach's self-regeneration of stereocenters (SRS), C-to-N-to-C chirality transfer, and memory of chirality (MOC). This review highlights the recent advancements in temporary chirality induction strategies for the total synthesis of α-tertiary amine-containing natural products between 2013 and 2023.
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Affiliation(s)
- Hongjun Jeon
- Therapeutics & Biotechnology Division, Korea Research Institute of Chemical Technology (KRICT), Daejeon 34114, Republic of Korea
| | - Jae Hyun Kim
- College of Pharmacy, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Sanghee Kim
- College of Pharmacy, Seoul National University, Seoul 08826, Republic of Korea.
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2
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Scheerer JR, Leeth EB, Sprow JA. Synthesis of Guaipyridine Alkaloids Rupestine M and L by Cycloaddition/Cycloreversion of an Intermediate 1,4-Oxazinone. SYNTHESIS-STUTTGART 2023; 55:2319-2324. [PMID: 37691879 PMCID: PMC10489027 DOI: 10.1055/s-0042-1751413] [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] [Indexed: 02/05/2023]
Abstract
A new method to prepare 1,4-oxazinone intermediates was developed based on aza-conjugate addition of β-amino alcohols to electron-deficient alkyne precursors. A tandem intramolecular cycloaddition/cycloreversion reaction sequence was evaluated, leading to the synthesis of the guaipyridine alkaloid natural products rupestine M and L. Starting from (-)-citronellal and thus a known configuration of the C5 stereocenter, a revised absolute configuration of natural rupestine L is suggested based on optical rotation.
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Affiliation(s)
- Jonathan R Scheerer
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, VA 23187, USA
| | - Ella B Leeth
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, VA 23187, USA
| | - Jennifer A Sprow
- Department of Chemistry, William & Mary, P.O. Box 8795, Williamsburg, VA 23187, USA
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3
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Sebastian A, Srinivasulu V, Abu-Yousef IA, Gorka O, Al-Tel TH. Domino Transformations of Ene/Yne Tethered Salicylaldehyde Derivatives: Pluripotent Platforms for the Construction of High sp 3 Content and Privileged Architectures. Chemistry 2019; 25:15710-15735. [PMID: 31365773 DOI: 10.1002/chem.201902596] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/30/2019] [Indexed: 12/23/2022]
Abstract
Diversity-oriented synthesis (DOS) has become a powerful synthetic tool that facilitates the construction of nature-inspired and privileged chemical space, particularly for sp3 -rich non-flat scaffolds, which are needed for phenotypic screening campaigns. These diverse compound collections led to the discovery of novel chemotypes that can modulate the protein function in underrepresented biological space. In this context, starting material-driven DOS is one of the most important tools used to build diverse compound libraries with rich stereochemical and scaffold diversity. To this end, ene/yne tethered salicylaldehyde derivatives have emerged as a pluripotent chemical platform, the products of which led to the construction of a privileged chemical space with significant biological activities. In this review, various domino transformations employing o-alkene/alkyne tethered aryl aldehyde/ketone platforms are described and discussed, with emphasis on the period from 2011 to date.
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Affiliation(s)
- Anusha Sebastian
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Vunnam Srinivasulu
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE
| | - Imad A Abu-Yousef
- College of Arts and Sciences, Department of Biology, Chemistry and Environmental Sciences, American University of Sharjah, Sharjah, UAE
| | - Orive Gorka
- NanoBioCel Group, Laboratory of Pharmaceutics, School of Pharmacy, University of the Basque Country UPV/EHU, Paseo de la Universidad 7, Vitoria-Gasteiz, 01006, Spain.,Biomedical Research Networking Centre in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Vitoria-Gasteiz, Spain
| | - Taleb H Al-Tel
- Sharjah Institute for Medical Research, University of Sharjah, P.O. Box 27272, Sharjah, UAE.,College of Pharmacy, University of Sharjah, P.O. Box 27272, Sharjah, UAE
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4
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Zhang Y, Huang L, Li X, Wang L, Feng H. Chemo- and Diastereoselective Synthesis of N-Propargyl Oxazolidines through a Copper-Catalyzed Domino A3 Reaction. J Org Chem 2019; 84:5046-5055. [DOI: 10.1021/acs.joc.8b03244] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yazhen Zhang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Liliang Huang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Xiaoyang Li
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Le Wang
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
| | - Huangdi Feng
- College of Chemistry and Chemical Engineering, Shanghai University of Engineering Science, 333 Longteng Road, Shanghai 201620, China
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Williamson JB, Smith ER, Scheerer JR. A Merged Aldol Condensation, Alkene Isomerization, Cycloaddition/Cycloreversion Sequence Employing Oxazinone Intermediates for the Synthesis of Substituted Pyridines. Synlett 2018; 28:1170-1172. [PMID: 29398786 DOI: 10.1055/s-0036-1588729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A domino reaction sequence has been evaluated that begins with union of novel dihydrooxazinone precursors with 2-alkynyl-substituted benzaldehyde components through aldol condensation. Ensuing operations, including alkene isomerization, Diels-Alder, and retrograde Diels-Alder with loss of CO2 occurs in the same reaction vessel to provide polysubstituted tricyclic pyridine products.
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Affiliation(s)
- Jill B Williamson
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, VA 23187, USA
| | - Emily R Smith
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, VA 23187, USA
| | - Jonathan R Scheerer
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, VA 23187, USA
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6
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Amatov T, Pohl R, Cisařová I, Jahn U. Sequential Oxidative and Reductive Radical Cyclization Approach toward Asperparaline C and Synthesis of Its 8-Oxo Analogue. Org Lett 2017; 19:1152-1155. [PMID: 28207265 DOI: 10.1021/acs.orglett.7b00187] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The most advanced approach, so far, to the asperparalines is developed. Consecutive oxidative and reductive radical cyclizations serve as the key steps to stereoselectively access the complex fully elaborated skeleton containing the cyclopentane and spiro-succinimide units.
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Affiliation(s)
- Tynchtyk Amatov
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
| | - Radek Pohl
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
| | - Ivana Cisařová
- Department of Inorganic Chemistry, Faculty of Science, Charles University in Prague , Hlavova 8, 12843 Prague 2, Czech Republic
| | - Ullrich Jahn
- Institute of Organic Chemistry and Biochemistry, Czech Academy of Sciences , Flemingovo namesti 2, 16610 Prague 6, Czech Republic
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Amatov T, Gebauer M, Pohl R, Cisařová I, Jahn U. Oxidative radical cyclizations of diketopiperazines bearing an amidomalonate unit. Heterointermediate reaction sequences toward the asperparalines and stephacidins. Free Radic Res 2016; 50:S6-S17. [PMID: 27806645 DOI: 10.1080/10715762.2016.1223295] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A novel approach to the diazabicyclo[2.2.2]octane core of prenylated bridged diketopiperazine alkaloids is described by direct oxidative cyclizations of functionalized diketopiperazines mediated by ferrocenium hexafluorophosphate or the Mn(OAc)3•2H2O/Cu(OTf)2 system. Divergent reaction pathways take place depending on the substitution pattern of the substrates and the oxidation conditions such as temperature or the presence or absence of persistent radical TEMPO. For ester-substituted diketopiperazines, the ester group exerts a significant influence on the reaction outcome and stereochemistry of the radical cyclizations.
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Affiliation(s)
- Tynchtyk Amatov
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Martin Gebauer
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Radek Pohl
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
| | - Ivana Cisařová
- b Department of Inorganic Chemistry, Faculty of Science , Charles University in Prague , Hlavova 2030/8 , Prague 2, Czech Republic
| | - Ullrich Jahn
- a Institute of Organic Chemistry and Biochemistry , Czech Academy of Sciences , Flemingovo namesti 2 , Prague 6, Czech Republic
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8
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Robins JG, Kim KJ, Chinn AJ, Woo JS, Scheerer JR. Intermolecular Diels-Alder Cycloaddition for the Construction of Bicyclo[2.2.2]diazaoctane Structures: Formal Synthesis of Brevianamide B and Premalbrancheamide. J Org Chem 2016; 81:2293-301. [PMID: 26916112 DOI: 10.1021/acs.joc.5b02744] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A stereoselective intermolecular Diels-Alder cycloaddition of an intermediate pyrazinone with both achiral and chiral acrylate-derived dienophiles provides rapid access to the bicyclo[2.2.2]diazaoctane core shared among several prenylated indole alkaloids. The product derived from cycloaddition with 2-nitroacrylate required an additional five to six synthetic operations to intercept established precursors to premalbrancheamide and brevianamide B. The chemistry detailed in this manuscript constitutes a formal total synthesis (12 steps each) of these [2.2.2]diazabicyclic natural products from proline methyl ester.
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Affiliation(s)
- Jacob G Robins
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Kyu J Kim
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Alex J Chinn
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - John S Woo
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Jonathan R Scheerer
- Department of Chemistry, The College of William & Mary , P.O. Box 8795, Williamsburg, Virginia 23187, United States
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9
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Amatov T, Pohl R, Císařová I, Jahn U. Synthesis of Bridged Diketopiperazines by Using the Persistent Radical Effect and a Formal Synthesis of Bicyclomycin. Angew Chem Int Ed Engl 2015; 54:12153-7. [DOI: 10.1002/anie.201504883] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Indexed: 01/29/2023]
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10
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Amatov T, Pohl R, Císařová I, Jahn U. Synthese überbrückter Diketopiperazine mit Hilfe des persistenten Radikaleffekts und eine formale Synthese von Bicyclomycin. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504883] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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11
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Sprague D, Nugent BM, Yoder RA, Vara BA, Johnston JN. Adaptation of a small-molecule hydrogen-bond donor catalyst to an enantioselective hetero-Diels-Alder reaction hypothesized for brevianamide biosynthesis. Org Lett 2015; 17:880-3. [PMID: 25697748 PMCID: PMC4339957 DOI: 10.1021/ol503626w] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Indexed: 12/22/2022]
Abstract
Chiral diamine-derived hydrogen-bond donors were evaluated for their ability to effect stereocontrol in an intramolecular hetero-Diels-Alder (HDA) reaction hypothesized in the biosynthesis of brevianamides A and B. Collectively, these results provide proof of principle that small-molecule hydrogen-bond catalysis, if even based on a hypothetical biosynthesis construct, holds significant potential within enantioselective natural product synthesis.
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Affiliation(s)
- Daniel
J. Sprague
- Department of Chemistry and
Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Benjamin M. Nugent
- Department of Chemistry and
Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Ryan A. Yoder
- Department of Chemistry and
Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Brandon A. Vara
- Department of Chemistry and
Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Jeffrey N. Johnston
- Department of Chemistry and
Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
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12
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Khan I, Khan S, Tyagi V, Chouhan PS, Chauhan PMS. Diversity-oriented reconstruction of primitive diketopiperazine-fused tetrahydro-β-carboline ring systems via Pictet–Spengler/Ugi-4CR/deprotection-cyclization reactions. RSC Adv 2015. [DOI: 10.1039/c5ra17259d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
An expedient construction of tetrahydro-β-carbolinediketopiperazine ring systems, which are present in various indole alkaloids, is documented.
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Affiliation(s)
- Irfan Khan
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Shahnawaz Khan
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Vikas Tyagi
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Pradeep Singh Chouhan
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Prem M. S. Chauhan
- Division of Medicinal and Process Chemistry
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
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13
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Margrey KA, Hazzard AD, Scheerer JR. Synthesis of 2-Pyridones by Cycloreversion of [2.2.2]- Bicycloalkene Diketopiperazines. Org Lett 2014; 16:904-7. [DOI: 10.1021/ol403632t] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Kaila A. Margrey
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Amy D. Hazzard
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
| | - Jonathan R. Scheerer
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg, Virginia 23187, United States
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14
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Wu M, Ma D. Total Syntheses of (±)-Spiroquinazoline, (−)-Alantryphenone, (+)-Lapatin A, and (−)-Quinadoline B. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303893] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Wu M, Ma D. Total Syntheses of (±)-Spiroquinazoline, (−)-Alantryphenone, (+)-Lapatin A, and (−)-Quinadoline B. Angew Chem Int Ed Engl 2013; 52:9759-62. [DOI: 10.1002/anie.201303893] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2013] [Revised: 06/17/2013] [Indexed: 11/08/2022]
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Affiliation(s)
- Stephen W. Laws
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg,
Virginia 23187, United States
| | - Jonathan R. Scheerer
- Department of Chemistry, The College of William & Mary, P.O. Box 8795, Williamsburg,
Virginia 23187, United States
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Mahajan S, Singh IP. Determining and reporting purity of organic molecules: why qNMR. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2013; 51:76-81. [PMID: 23233454 DOI: 10.1002/mrc.3906] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2012] [Revised: 11/06/2012] [Accepted: 11/08/2012] [Indexed: 06/01/2023]
Abstract
Although NMR has been routinely used to determine/estimate relative number of protons for structure elucidation, it has been rarely used to determine and report the purity of organic compounds. Through this paper, we want to emphasize on routine use of quantitative NMR (qNMR) for this purpose. The results of qNMR can be routinely considered as documentation of purity much like other established methods (HPLC, elemental analysis and differential scanning calorimetry). qNMR is a fast, easy, accurate and non-destructive alternate to speed up the whole analytical process and serves the purpose of both identification and purity determination of compounds using single technique.
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Affiliation(s)
- Shivani Mahajan
- Department of Natural Products, National Institute of Pharmaceutical Education and Research, SAS Nagar, Punjab, India
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Chang MY, Wu MH, Tai HY. NH4OAc Promoted Cyclocondensation of 3-(o-Allylphenyl)pentane-1,5-diones: Synthesis of Tetracyclic Benzofused 1-Azahomoisotwistanes. Org Lett 2012; 14:3936-9. [DOI: 10.1021/ol301693s] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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