1
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Mali G, Kumar Yadav V, Priya H, Shukla M, Pandey P, Kumar A, Paranjothy M, Bhattacharyya S, Erande RD. The rapid construction and biological evaluation of densely substituted pyrrolo[1,2- a]indoles via a BF 3·OEt 2-assisted cascade approach. Org Biomol Chem 2023. [PMID: 38038241 DOI: 10.1039/d3ob01457f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
Lewis-acid cascade reactions promoted by BF3·OEt2 are reported for the synthesis of highly substituted pyrrolo[1,2-a]indoles and congeners of benzofuro[2,3-b]indoles. These reactions are highly regio- and diastereoselective towards generating up to five contiguous stereogenic centers, including two vicinal quaternary centers. Furthermore, an established cascade approach and the mechanism proposed herein are well supported by quantum chemistry calculations. In addition, a self-dimerization intermediate was trapped and isolated to establish a strategy for potential access to both pyrrolo and benzo indole derivatives, leaving sufficient freedom for broadening. Furthermore, in-silico molecular docking and all atomistic molecular dynamic (MD) simulation analysis suggests that the synthesized pyrrolo[1,2-a]indole derivatives stably bind at the active site of the mycobacterial secreted tyrosine phosphatase B (MptpB) enzyme, an emerging anti-mycobacterial drug target. Deep learning-based affinity predictions and MMPBGBSA-based energy calculations of the docked poses are presented herein.
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Affiliation(s)
- Ghanshyam Mali
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
| | - Vinay Kumar Yadav
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Himani Priya
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
| | - Manjari Shukla
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Peeyush Pandey
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
| | - Akhilesh Kumar
- Department of Chemistry and Nano Science, Ewha Womans University, Seoul 03760, Korea
| | - Manikandan Paranjothy
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
| | - Sudipta Bhattacharyya
- Department of Bioscience & Bioengineering, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India
| | - Rohan D Erande
- Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur 342037, Rajasthan, India.
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2
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Liu L, Zhang Y, Zhao W, Li J. Electron Donor-Acceptor Complex Induced Fused Indoles with Hypervalent Iodine(III) Reagents. Org Lett 2023; 25:6251-6255. [PMID: 37607047 DOI: 10.1021/acs.orglett.3c02009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An operationally simple and efficient method for the cyclization of tertiary amines and hypervalent iodine reagents enabled by an EDA complex has been developed. A series of [1,2-α]indoles derivatives were obtained in good yields, including some key intermediates for the synthesis of biologically active molecules. In addition, this established strategy features a broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Li Liu
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Yage Zhang
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Wenyan Zhao
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Jian Li
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
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3
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Duarte-Filho LAMDS, Amariz IA, Nishimura RHV, Massaranduba ABR, Menezes PMN, Damasceno TA, Brys I, Rolim LA, Silva FS, Ribeiro LADA. β-carboline-independent antidepressant-like effect of the standardized extract of the barks of Mimosa tenuiflora (Willd) Poir. occurs via 5-HT 2A/2C receptors in mice. J Psychopharmacol 2022; 36:836-848. [PMID: 35723216 DOI: 10.1177/02698811221104050] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Depression is a psychiatric disorder with limited therapy options. Psychedelics are new antidepressant candidates, being the ayahuasca one of the most promising ones. A synergistic combination of N,N-dimethyltryptamine (DMT) and β-carbolines allows ayahuasca antidepressant properties. Another psychedelic and DMT-containing beverage is the jurema wine used religiously by indigenous people from Northeastern Brazil. AIMS To evaluate the antidepressant-like effect of standardized extract of Mimosa tenuiflora (SEMT), associated or not with harmine (β-carboline), in behavioral models of depression. METHODS The SEMT was submitted to (+) ESI-IT-LC/MS analysis for DMT quantification. To assess the antidepressant-like effect of SEMT, the open field (OFT), tail suspension (TST), and forced swim (FST) tests were performed. To verify the participation of serotonergic systems, the 5-hydroxytryptophan (5-HTP)-induced head twitch test was performed. RESULTS The content of DMT found in SEMT was 24.74 ± 0.8 mg/g. Yuremamine was also identified. SEMT presented an antidepressant-like effect in mice submitted to the TST and FST, independent from harmine, with no significant alterations on the OFT. The sub-dose interaction between SEMT and ketamine also produced an anti-immobility effect in the TST, with no changes in the OFT. SEMT potentiated the head twitch behavior induced by 5-HTP and ketanserin prevented its antidepressant-like effect in the TST (p < 0.05). CONCLUSIONS SEMT presented a harmine-independent antidepressant-like effect in mice submitted to the TST and FST. This effect occurs possibly via activation of serotonergic systems, particularly the 5-HT2A/2C receptors.
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Affiliation(s)
| | - Isabela Araujo Amariz
- Rede Nordeste de Biotecnologia (RENORBIO), Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil.,Central de Análise de Fármacos, Medicamentos e Alimentos (CAFMA) UNIVASF, Petrolina, Pernambuco, Brazil
| | | | - Ana Beatriz Rodrigues Massaranduba
- Pós-Graduação em Ciências da Saúde e Biológicas (PGCSB) UNIVASF, Petrolina, Pernambuco, Brazil.,Grupo de Pesquisa em Neurociências e Psicologia Experimental (Neurovale) UNIVASF, Petrolina, Pernambuco, Brazil.,Grupo de Pesquisa em Processamento de Sinais e Visão Computacional (SigProCV) UNIVASF, Petrolina, Pernambuco, Brazil
| | | | | | - Ivani Brys
- Pós-Graduação em Ciências da Saúde e Biológicas (PGCSB) UNIVASF, Petrolina, Pernambuco, Brazil.,Grupo de Pesquisa em Neurociências e Psicologia Experimental (Neurovale) UNIVASF, Petrolina, Pernambuco, Brazil
| | - Larissa Araújo Rolim
- Pós-Graduação em Biociências (PGB) UNIVASF, Pernambuco, Brazil.,Rede Nordeste de Biotecnologia (RENORBIO), Universidade Federal Rural de Pernambuco, Recife, Pernambuco, Brazil.,Central de Análise de Fármacos, Medicamentos e Alimentos (CAFMA) UNIVASF, Petrolina, Pernambuco, Brazil.,Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Pernambuco, Brazil
| | - Fabrício Souza Silva
- Pós-Graduação em Biociências (PGB) UNIVASF, Pernambuco, Brazil.,Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Pernambuco, Brazil
| | - Luciano Augusto de Araújo Ribeiro
- Pós-Graduação em Biociências (PGB) UNIVASF, Pernambuco, Brazil.,Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Pernambuco, Brazil
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4
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Rizwan K, Majeed I, Bilal M, Rasheed T, Shakeel A, Iqbal S. Phytochemistry and Diverse Pharmacology of Genus Mimosa: A Review. Biomolecules 2022; 12:biom12010083. [PMID: 35053231 PMCID: PMC8773851 DOI: 10.3390/biom12010083] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 12/31/2021] [Accepted: 01/04/2022] [Indexed: 12/25/2022] Open
Abstract
The genus Mimosa belongs to the Fabaceae family and comprises almost 400 species of herbs, shrubs and ornamental trees. The genus Mimosa is found all over the tropics and subtropics of Asia, Africa, South America, North America and Australia. Traditionally, this genus has been popular for the treatment of jaundice, diarrhea, fever, toothache, wound healing, asthma, leprosy, vaginal and urinary complaints, skin diseases, piles, gastrointestinal disorders, small pox, hepatitis, tumor, HIV, ulcers and ringworm. The review covered literature available from 1959 to 2020 collected from books, scientific journals and electronic searches, such as Science Direct, Web of Science and Google scholar. Various keywords, such as Mimosa, secondary metabolites, medicines, phytochemicals and pharmacological values, were used for the data search. The Mimosa species are acknowledged to be an essential source of secondary metabolites with a wide-ranging biological functions, and up until now, 145 compounds have been isolated from this genus. Pharmacological studies showed that isolated compounds possess significant potential, such as antiprotozoal, antimicrobial, antiviral, antioxidant, and antiproliferative as well as cytotoxic activities. Alkaloids, chalcones, flavonoids, indoles, terpenes, terpenoids, saponins, steroids, amino acids, glycosides, flavanols, phenols, lignoids, polysaccharides, lignins, salts and fatty esters have been isolated from this genus. This review focused on the medicinal aspects of the Mimosa species and may provide a comprehensive understanding of the prospective of this genus as a foundation of medicine, supplement and nourishment. The plants of this genus could be a potential source of medicines in the near future.
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Affiliation(s)
- Komal Rizwan
- Department of Chemistry, University of Sahiwal, Sahiwal 57000, Pakistan
- Correspondence: (K.R.); (A.S.)
| | - Ismat Majeed
- Department of Chemistry, Government College Women University, Faisalabad 38000, Pakistan;
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China;
| | - Tahir Rasheed
- Interdisciplinary Research Center for Advanced Materials, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran 31261, Saudi Arabia;
| | - Ahmad Shakeel
- Department of Hydraulic Engineering, Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, The Netherlands
- Correspondence: (K.R.); (A.S.)
| | - Shahid Iqbal
- Department of Chemistry, School of Natural Sciences (SNS), National University of Science and Technology (NUST), H-12, Islamabad 46000, Pakistan;
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5
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Gharpure SJ, Jegadeesan S, Vishwakarma DS. Total synthesis of myristinins A–F and 3′-hydroxy-5,7-dimethoxy-4- O-2′-cycloflavan by iterative generation of o-quinone methides. NEW J CHEM 2022. [DOI: 10.1039/d2nj00244b] [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
An iterative generation of o-quinone methides (o-QMs) and [4+2] cycloaddition followed by inter/intra-molecular Michael addition in a cascade sequence gave expedient access to the total synthesis of myristinins A–F and 3′-hydroxy-5,7-dimethoxy-4-O-2′-cycloflavan and their analogues, respectively.
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Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai – 400076, India
| | - S. Jegadeesan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai – 400076, India
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6
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Pandey KP, Rahman MT, Cook JM. Bisindole Alkaloids from the Alstonia Species: Recent Isolation, Bioactivity, Biosynthesis, and Synthesis. Molecules 2021; 26:molecules26113459. [PMID: 34200196 PMCID: PMC8201064 DOI: 10.3390/molecules26113459] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Revised: 05/24/2021] [Accepted: 05/27/2021] [Indexed: 01/22/2023] Open
Abstract
Bisindoles are structurally complex dimers and are intriguing targets for partial and total synthesis. They exhibit stronger biological activity than their corresponding monomeric units. Alkaloids, including those containing C-19 methyl-substitution in their monomeric units, their synthetic derivatives, and their mismatched pairs can be attractive targets for synthesis and may unlock better drug targets. We herein discuss the isolation of bisindoles from various Alstonia species, their bioactivity, putative biosynthesis, and synthesis. The total synthesis of macralstonidine, macralstonine, O-acetylmacralstonine, and dispegatrine, as well as the partial synthesis of alstonisidine, villalstonine, and macrocarpamine are also discussed in this review. The completion of the total synthesis of pleiocarpamine by Sato et al. completes the formal synthesis of the latter two bisindoles.
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Affiliation(s)
- Kamal P. Pandey
- Department of Chemistry and Biochemistry, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA;
| | - Md Toufiqur Rahman
- RTI International, Center for Drug Discovery, Research Triangle Park, Durham, NC 27709, USA;
| | - James M. Cook
- Department of Chemistry and Biochemistry, University of Wisconsin Milwaukee, Milwaukee, WI 53211, USA;
- Correspondence: ; Tel.: +1-414-614-0919
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7
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Kouamé T, Okpekon AT, Bony NF, N’Tamon AD, Gallard JF, Rharrabti S, Leblanc K, Mouray E, Grellier P, Champy P, Beniddir MA, Le Pogam P. Corynanthean-Epicatechin Flavoalkaloids from Corynanthe pachyceras. Molecules 2020; 25:E2654. [PMID: 32517373 PMCID: PMC7321195 DOI: 10.3390/molecules25112654] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/05/2020] [Accepted: 06/05/2020] [Indexed: 11/17/2022] Open
Abstract
Epicatechocorynantheines A and B, and epicatechocorynantheidine were isolated from the stem bark of Corynanthe pachyceras. These molecules were pinpointed, and their isolation streamlined, by a molecular networking strategy. The structural elucidation was unambiguously accomplished from HRMS and 1D/2D NMR data. These compounds represent the first examples of corynanthean-type alkaloids tethered with a flavonoid. Epicatechocorynantheidine notably instigated two connections between the monoterpene indole alkaloid and the flavonoid, yielding an unprecedented octacyclic appendage. These flavoalkaloids exerted moderate antiplasmodial activities.
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Affiliation(s)
- Tapé Kouamé
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France; (T.K.); (A.D.N.); (S.R.); (K.L.); (P.C.)
- Laboratoire de Chimie Organique et de Substances Naturelles (LCOSN), UFR Sciences des Structures de la Matière et Technologie, Univ. FHB, 22 BP 582 Abidjan 22, Côte d’Ivoire, France;
| | - Aboua Timothée Okpekon
- Laboratoire de Chimie Organique et de Substances Naturelles (LCOSN), UFR Sciences des Structures de la Matière et Technologie, Univ. FHB, 22 BP 582 Abidjan 22, Côte d’Ivoire, France;
| | - Nicaise F. Bony
- Département de Chimie Analytique, Minérale et Générale, Technologie Alimentaire, UFR Sciences Pharmaceutiques et Biologiques, Univ. FHB, 06 B. P. 2256 Abidjan 06, Côte d’Ivoire, France;
| | - Amon Diane N’Tamon
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France; (T.K.); (A.D.N.); (S.R.); (K.L.); (P.C.)
- Département de Chimie Analytique, Minérale et Générale, Technologie Alimentaire, UFR Sciences Pharmaceutiques et Biologiques, Univ. FHB, 06 B. P. 2256 Abidjan 06, Côte d’Ivoire, France;
| | - Jean-François Gallard
- Institut de Chimie des Substances Naturelles, CNRS, ICSN UPR 2301, Université Paris-Saclay, 21 Avenue de la Terrasse, 91198 Gif-sur-Yvette, France;
| | - Somia Rharrabti
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France; (T.K.); (A.D.N.); (S.R.); (K.L.); (P.C.)
| | - Karine Leblanc
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France; (T.K.); (A.D.N.); (S.R.); (K.L.); (P.C.)
| | - Elisabeth Mouray
- Muséum National d′Histoire Naturelle, Unité Molécules de Communication et Adaptation des Micro-organismes, UMR7245, CP54, 57 Rue Cuvier, 75005 Paris, France; (E.M.); (P.G.)
| | - Philippe Grellier
- Muséum National d′Histoire Naturelle, Unité Molécules de Communication et Adaptation des Micro-organismes, UMR7245, CP54, 57 Rue Cuvier, 75005 Paris, France; (E.M.); (P.G.)
| | - Pierre Champy
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France; (T.K.); (A.D.N.); (S.R.); (K.L.); (P.C.)
| | - Mehdi A. Beniddir
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France; (T.K.); (A.D.N.); (S.R.); (K.L.); (P.C.)
| | - Pierre Le Pogam
- Université Paris-Saclay, CNRS, BioCIS, 92290 Châtenay-Malabry, France; (T.K.); (A.D.N.); (S.R.); (K.L.); (P.C.)
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8
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Devlin R, Sperry J. Biomimetic synthesis of nudicaulins I and II, yellow pigments from the Iceland poppy Papaver nudicaule. Chem Commun (Camb) 2019; 55:13594-13597. [PMID: 31657378 DOI: 10.1039/c9cc07943b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Indole and the anthocyanin orientalin proceed through a unique cascade sequence that leads to nudicaulins I and II in 92% yield. This biomimetic synthesis confirms the biosynthesis proposal for these structurally unprecedented flavoalkaloids that play a key role in the colour range displayed by the Iceland poppy.
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Affiliation(s)
- Rory Devlin
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand.
| | - Jonathan Sperry
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand.
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9
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Gao YQ, Hou Y, Zhu L, Chen G, Xu D, Zhang SY, He Y, Xie W. A bio-inspired synthesis of hybrid flavonoids from 2-hydroxychalcone driven by visible light. RSC Adv 2019; 9:29005-29009. [PMID: 35528404 PMCID: PMC9071822 DOI: 10.1039/c9ra07198a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 09/09/2019] [Indexed: 11/21/2022] Open
Abstract
An efficient protocol for the synthesis of hybrid flavonoids was achieved via a bio-inspired tandem reaction of 2-hydroxychalcone with various nucleophiles.
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Affiliation(s)
- Yu-Qi Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Yi Hou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Liming Zhu
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Guzhou Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Dongyang Xu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
| | - Sheng-Yong Zhang
- Department of Chemistry
- Fourth Military Medical University
- Xi'an 710032
- China
| | - Yupeng He
- College of Chemistry
- Chemical Engineering and Environmental Engineering
- Liaoning Shihua University
- Fushun 113001
- China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology
- College of Chemistry & Pharmacy
- Northwest A&F University
- Yangling 712100
- China
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10
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Formation of Nudicaulins In Vivo and In Vitro and the Biomimetic Synthesis and Bioactivity of O-Methylated Nudicaulin Derivatives. Molecules 2018; 23:molecules23123357. [PMID: 30567384 PMCID: PMC6320756 DOI: 10.3390/molecules23123357] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 12/03/2018] [Accepted: 12/15/2018] [Indexed: 12/19/2022] Open
Abstract
Nudicaulins are yellow flower pigments accounting for the color of the petals of Papaver nudicaule (Papaveraceae). These glucosidic compounds belong to the small group of indole/flavonoid hybrid alkaloids. Here we describe in vivo and in vitro experiments which substantiate the strongly pH-dependent conversion of pelargonidin glucosides to nudicaulins as the final biosynthetic step of these alkaloids. Furthermore, we report the first synthesis of nudicaulin aglycon derivatives, starting with quercetin and ending up at the biomimetic fusion of a permethylated anthocyanidin with indole. A small library of nudicaulin derivatives with differently substituted indole units was prepared, and the antimicrobial, antiproliferative and cell toxicity data of the new compounds were determined. The synthetic procedure is considered suitable for preparing nudicaulin derivatives which are structurally modified in the indole and/or the polyphenolic part of the molecule and may have optimized pharmacological activities.
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11
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Davison EK, Hume PA, Sperry J. Total Synthesis of an Isatis indigotica-Derived Alkaloid Using a Biomimetic Thio-Diels–Alder Reaction. Org Lett 2018; 20:3545-3548. [DOI: 10.1021/acs.orglett.8b01321] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Emma K. Davison
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Paul A. Hume
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, New Zealand
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12
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Homer JA, Sperry J. Biomimetic synthesis of the bisindole framework present in sciodole, an alkaloid fromTricholoma sciodes. Org Biomol Chem 2018; 16:6882-6885. [DOI: 10.1039/c8ob02142b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The unique bisindole bond present in the alkaloid sciodole can be forged by amination of an azafulvene, validating a biosynthetic hypothesis.
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Affiliation(s)
- Joshua A. Homer
- School of Chemical Sciences
- 23 Symonds Street
- University of Auckland
- Auckland
- New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences
- 23 Symonds Street
- University of Auckland
- Auckland
- New Zealand
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13
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Gharpure SJ, Shelke YG. Lewis Acid Mediated Cascade Friedel–Craft/Alkyne Indol-2-yl Cation Cyclization/Vinyl Cation Trapping for the Synthesis of N-Fused Indole Derivatives. Org Lett 2017; 19:5406-5409. [DOI: 10.1021/acs.orglett.7b02680] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India
| | - Yogesh G. Shelke
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai - 400076, India
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14
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Gharpure SJ, Shelke YG. Cascade Radical Cyclization of N-Propargylindoles: Substituents Dictate Stereoselective Formation of N-Fused Indolines versus Indoles. Org Lett 2017; 19:5022-5025. [DOI: 10.1021/acs.orglett.7b02005] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Yogesh G. Shelke
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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15
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Tsutsumi LS, Tan GT, Sun D. Solid-phase synthesis of cyclic hexapeptides wollamides A, B and desotamide B. Tetrahedron Lett 2017; 58:2675-2680. [PMID: 29129945 PMCID: PMC5678967 DOI: 10.1016/j.tetlet.2017.05.084] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Solid-phase synthesis of antibacterial cyclohexapeptides including wollamides A, B and desotamide B has been developed. Briefly, the protected linear hexapeptides were assembled on 2-chlorotrityl chloride resin using standard Fmoc chemistry and diisopropylcarbodiimide/hydroxybenzotriazole coupling reagents, cleaved off-resin with hexafluoroisopropanol/dichloromethane to keep side-chain protecting groups intact, and cyclized in solution. Final global removal of all protecting groups using a cocktail of trifluoroacetic acid/triisopropylsilane/dichloromethane afforded the desired cyclic hexapeptides, which were characterized by 1H, 13C NMR, and HRMS. Subsequent investigation of macrocyclization parameters such as terminal residues, coupling reagents, and cyclization concentration revealed the optimized conditions for the synthesis of this class of cyclic hexapeptides.
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Affiliation(s)
- Lissa S Tsutsumi
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - Ghee T Tan
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
| | - Dianqing Sun
- Department of Pharmaceutical Sciences, The Daniel K. Inouye College of Pharmacy, University of Hawai'i at Hilo, 34 Rainbow Drive, Hilo, HI 96720, USA
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16
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Chakrabarty I, Inamdar SM, Akram MO, Gade AB, Banerjee S, Bera S, Patil NT. [3+2]-Annulation of platinum-bound azomethine ylides with distal C[double bond, length as m-dash]C bonds of N-allenamides. Chem Commun (Camb) 2017; 53:196-199. [PMID: 27917422 DOI: 10.1039/c6cc07874e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A Pt-catalyzed, highly regioselective reaction between N-allenamides and imino-alkynes leading to pyrrolo[1,2-a]indoles is described. This represents the first example of [3+2]-annulation of Pt-bound azomethine ylides with the distal C[double bond, length as m-dash]C bond of N-allenamides. The mechanism of the reaction was established by computational studies.
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Affiliation(s)
- Indradweep Chakrabarty
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Suleman M Inamdar
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India.
| | - Manjur O Akram
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Amol B Gade
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
| | - Subhrashis Banerjee
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India
| | - Saibal Bera
- Physical and Materials Chemistry Division, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India
| | - Nitin T Patil
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr Homi Bhabha Road, Pune - 411008, India. and Academy of Scientific and Innovative Research (AcSIR), New Delhi - 110025, India
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17
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Newton CG, Wang SG, Oliveira CC, Cramer N. Catalytic Enantioselective Transformations Involving C–H Bond Cleavage by Transition-Metal Complexes. Chem Rev 2017; 117:8908-8976. [DOI: 10.1021/acs.chemrev.6b00692] [Citation(s) in RCA: 643] [Impact Index Per Article: 91.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Christopher G. Newton
- Laboratory of Asymmetric
Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Shou-Guo Wang
- Laboratory of Asymmetric
Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Caio C. Oliveira
- Laboratory of Asymmetric
Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
| | - Nicolai Cramer
- Laboratory of Asymmetric
Catalysis and Synthesis, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
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18
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Brown PD, Lawrence AL. The importance of asking “how and why?” in natural product structure elucidation. Nat Prod Rep 2017; 34:1193-1202. [DOI: 10.1039/c7np00025a] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review highlights why careful consideration of the biosynthetic origin (the how) and the biological function (the why) of a natural product can be so useful during the determination of its structure.
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Affiliation(s)
- Patrick D. Brown
- EaStCHEM School of Chemistry
- University of Edinburgh
- Joseph Black Building
- Edinburgh
- UK
| | - Andrew L. Lawrence
- EaStCHEM School of Chemistry
- University of Edinburgh
- Joseph Black Building
- Edinburgh
- UK
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19
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Ren Z, Hao Y, Hu X. Total Synthesis and Structural Reassignment of (±)-Cereoanhydride. Org Lett 2016; 18:4958-4961. [DOI: 10.1021/acs.orglett.6b02424] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhiqiang Ren
- Department of Chemistry & Material Science, Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education of China, Northwest University, Xi’an 710127, China
| | - Yu Hao
- Department of Chemistry & Material Science, Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education of China, Northwest University, Xi’an 710127, China
| | - Xiangdong Hu
- Department of Chemistry & Material Science, Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education of China, Northwest University, Xi’an 710127, China
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20
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Ghosh A, Bainbridge DT, Stanley LM. Enantioselective Model Synthesis and Progress toward the Putative Structure of Yuremamine. J Org Chem 2016; 81:7945-51. [PMID: 27494137 DOI: 10.1021/acs.joc.6b01730] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
An enantioselective model synthesis of the 2,3-dihydro-1H-pyrrolo[1,2-a]indole core of the putative structure of yuremamine is reported in 39% overall yield and 96% ee over five steps. The model synthesis leverages enantioselective, rhodium-catalyzed hydroacylation of an N-vinylindole-2-carboxaldehyde as the key step in the installation of the stereochemical triad. An enantioselective synthesis of a densely functionalized dihydropyrroloindolone that maps onto the putative structure of yuremamine is demonstrated in 26% yield and 97% ee over eight steps.
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Affiliation(s)
- Avipsa Ghosh
- Department of Chemistry, Iowa State University , Ames, Iowa 50011, United States
| | - David T Bainbridge
- Department of Chemistry, Iowa State University , Ames, Iowa 50011, United States
| | - Levi M Stanley
- Department of Chemistry, Iowa State University , Ames, Iowa 50011, United States
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21
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Blair LM, Calvert MB, Sperry J. Flavoalkaloids-Isolation, Biological Activity, and Total Synthesis. THE ALKALOIDS. CHEMISTRY AND BIOLOGY 2016; 77:85-115. [PMID: 28212702 DOI: 10.1016/bs.alkal.2016.04.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The flavoalkaloids possess unique molecular frameworks that contain both a flavonoid and alkaloid component. Flavoalkaloids result from the convergence of distinct biosynthetic pathways, affording natural products that display a wide range of interesting biological activities that would not be expected for flavonoids or alkaloids alone. This chapter collates all the known flavoalkaloids up until early 2016, detailing their isolation, bioactivity, and successful total syntheses.
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22
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Kerr MA. The Annulation of Nitrones and Donor-Acceptor Cyclopropanes: A Personal Account of our Adventures to Date. Isr J Chem 2016. [DOI: 10.1002/ijch.201500095] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Michael A. Kerr
- Department of Chemistry; Western University, London; Ontario N6A 5B7 Canada
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23
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Warskulat AC, Tatsis EC, Dudek B, Kai M, Lorenz S, Schneider B. Unprecedented Utilization of Pelargonidin and Indole for the Biosynthesis of Plant Indole Alkaloids. Chembiochem 2016; 17:318-27. [PMID: 26670055 PMCID: PMC4770437 DOI: 10.1002/cbic.201500572] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2015] [Indexed: 01/19/2023]
Abstract
Nudicaulins are a group of indole alkaloid glycosides responsible for the color of yellow petals of Papaver nudicaule (Iceland poppy). The unique aglycone scaffold of these alkaloids attracted our interest as one of the most unusual flavonoid‐indole hybrid structures that occur in nature. Stable isotope labeling experiments with sliced petals identified free indole, but not tryptamine or l‐tryptophan, as one of the two key biosynthetic precursors of the nudicaulin aglycone. Pelargonidin was identified as the second key precursor, contributing the polyphenolic unit to the nudicaulin molecule. This finding was inferred from the temporary accumulation of pelargonidin glycosides in the petals during flower bud development and a drop at the point in time when nudicaulin levels start to increase. The precursor‐directed incorporation of cyanidin into a new 3′‐hydroxynudicaulin strongly supports the hypothesis that anthocyanins are involved in the biosynthesis of nudicaulins.
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Affiliation(s)
| | - Evangelos C Tatsis
- Max Planck Institut für chemische Ökologie, Hans Knöll Strasse 8, 07745, Jena, Germany
| | - Bettina Dudek
- Max Planck Institut für chemische Ökologie, Hans Knöll Strasse 8, 07745, Jena, Germany
| | - Marco Kai
- Max Planck Institut für chemische Ökologie, Hans Knöll Strasse 8, 07745, Jena, Germany
| | - Sybille Lorenz
- Max Planck Institut für chemische Ökologie, Hans Knöll Strasse 8, 07745, Jena, Germany
| | - Bernd Schneider
- Max Planck Institut für chemische Ökologie, Hans Knöll Strasse 8, 07745, Jena, Germany.
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24
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Calvert MB, Sperry J. Synthetic studies towards putative yuremamine using an iterative C(sp3)–H arylation strategy. Org Biomol Chem 2016; 14:5728-43. [DOI: 10.1039/c6ob00110f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An overview of synthetic efforts toward the initially proposed structure of yuremamine using iterative C(sp3)–H arylations is described.
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Affiliation(s)
| | - Jonathan Sperry
- School of Chemical Sciences
- University of Auckland
- Auckland
- New Zealand
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25
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Abstract
Herein is reported a synthesis of alocasin A (1), an alkaloid component of Alocasia macrorrhiza, a herbaceous plant used in folk medicine throughout southern Asia. A double Suzuki-Miyaura cross-coupling reaction between a 3-borylindole and 2,5-dibromopyrazine was used to assemble the heteroaromatic framework of the natural product. Removal of the protecting groups gave a synthetic sample of 1, the spectroscopic data of which matched those in the isolation report of this compound.
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Affiliation(s)
- Se Hun Kim
- School of Chemical Sciences, University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences, University of Auckland , 23 Symonds Street, Auckland 1142, New Zealand
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26
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Markwell-Heys AW, Kuan KKW, George JH. Total Synthesis and Structure Revision of (-)-Siphonodictyal B and Its Biomimetic Conversion into (+)-Liphagal. Org Lett 2015; 17:4228-31. [PMID: 26295981 DOI: 10.1021/acs.orglett.5b01973] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The structure of siphonodictyal B has been reassigned on the basis of the total synthesis of both possible C-8 epimers. The revised structure of siphonodictyal B was converted into liphagal by acid catalyzed rearrangement of a proposed epoxide intermediate. This biomimetic cascade features a succession of four distinct reactions (epoxidation, o-quinone methide formation, ring expansion, and benzofuran formation) that occur in a one-pot operation under mild conditions. During these studies we also isolated a surprisingly stable o-quinone methide that supports our mechanistic proposal for liphagal biosynthesis.
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Affiliation(s)
| | - Kevin K W Kuan
- Department of Chemistry, University of Adelaide , Adelaide, SA 5005, Australia
| | - Jonathan H George
- Department of Chemistry, University of Adelaide , Adelaide, SA 5005, Australia
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27
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Ohyama T, Uchida M, Kusama H, Iwasawa N. Total Synthesis of Proposed Structure of Yuremamine and All Diastereomers Using [3+2]-Cycloaddition of Platinum-Containing Azomethine Ylide. Chem Asian J 2015; 10:1850-3. [DOI: 10.1002/asia.201500491] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Tomoya Ohyama
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1, O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Masako Uchida
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1, O-okayama, Meguro-ku Tokyo 152-8551 Japan
| | - Hiroyuki Kusama
- Department of Chemistry, Faculty of Science; Gakushuin University; 1-5-1 Mejiro, Toshima-ku Tokyo 171-8588 Japan
| | - Nobuharu Iwasawa
- Department of Chemistry; Tokyo Institute of Technology; 2-12-1, O-okayama, Meguro-ku Tokyo 152-8551 Japan
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28
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Li H, Wang Z, Zu L. [3 + 2] Annulations between indoles and α,β-unsaturated ketones: access to pyrrolo[1,2-a]indoles and model reactions toward the originally assigned structure of yuremamine. RSC Adv 2015. [DOI: 10.1039/c5ra11904a] [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] Open
Abstract
The efficient assembly of densely substituted, highly functionalized pyrrolo[1,2-a]indoles by the direct annulation of indoles and α,β-unsaturated ketones is reported.
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Affiliation(s)
- Haokun Li
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- China
| | - Zhonglei Wang
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- China
| | - Liansuo Zu
- Department of Pharmacology and Pharmaceutical Sciences
- School of Medicine
- Tsinghua University
- Beijing
- China
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29
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Davison EK, Sperry J. Alkaloids from the traditional chinese medicine ChanSu: synthesis-enabled structural reassignment of bufopyramide to bufoserotonin C. Org Biomol Chem 2015; 13:7911-4. [DOI: 10.1039/c5ob01051a] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A synthesis of putative bufopyramide has shown the structure assigned to the natural product to be incorrect.
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Affiliation(s)
- Emma K. Davison
- School of Chemical Sciences
- The University of Auckland
- Auckland
- New Zealand
| | - Jonathan Sperry
- School of Chemical Sciences
- The University of Auckland
- Auckland
- New Zealand
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