1
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Huang X, Zhou J, Pei SC, Cui HL. TBHP/Et 3N-Promoted Chemoselective Formylation and Peroxidation of Pyrrolo[2,1- a]isoquinolines. J Org Chem 2024; 89:6353-6363. [PMID: 38625867 DOI: 10.1021/acs.joc.4c00321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/18/2024]
Abstract
An efficient formylation of pyrrolo[2,1-a]isoquinoline derivatives has been reached by the use of TBHP (tBuOOH) and Et3N as the mediator. In this strategy, CHO and CDO can be readily incorporated into heteroarenes by the utilization of CHCl3 and CDCl3 as the carbonyl sources. Interestingly, a solvent-controlled chemoselectivity was observed. The use of PhCl as a solvent resulted in dearomatization and peroxidation of pyrrolo[2,1-a]isoquinolines, delivering functionalized peroxides in 53-64% yields.
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Affiliation(s)
- Xiang Huang
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Jing Zhou
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Shu-Chen Pei
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
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2
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Pyrrole-2-carboxaldehydes: Origins and Physiological Activities. Molecules 2023; 28:molecules28062599. [PMID: 36985566 PMCID: PMC10058459 DOI: 10.3390/molecules28062599] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 03/06/2023] [Accepted: 03/09/2023] [Indexed: 03/18/2023] Open
Abstract
Pyrrole-2-carboxaldehyde (Py-2-C) derivatives have been isolated from many natural sources, including fungi, plants (roots, leaves, and seeds), and microorganisms. The well-known diabetes molecular marker, pyrraline, which is produced after sequential reactions in vivo, has a Py-2-C skeleton. Py-2-Cs can be chemically produced by the strong acid-catalyzed condensation of glucose and amino acid derivatives in vitro. These observations indicate the importance of the Py-2-C skeleton in vivo and suggest that molecules containing this skeleton have various biological functions. In this review, we have summarized Py-2-C derivatives based on their origins. We also discuss the structural characteristics, natural sources, and physiological activities of isolated compounds containing the Py-2-C group.
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3
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Pinčeková L, Jančiová E, Berkeš D, Gyepes R, Kolarovič A, Caletková O. Total Synthesis of Hemerocallisamine I Paved by Gram-Scale Synthesis of (2 S,4 S)-4-Hydroxyglutamic Acid Lactone. Molecules 2023; 28:molecules28052177. [PMID: 36903423 PMCID: PMC10037412 DOI: 10.3390/molecules28052177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 02/24/2023] [Accepted: 02/24/2023] [Indexed: 03/02/2023] Open
Abstract
Total synthesis of the 2-formylpyrrole alkaloid hemerocallisamine I is presented, both in racemic and enantiopure form. Our synthetic strategy involves (2S,4S)-4-hydroxyglutamic acid lactone as the key intermediate. Starting from an achiral substrate, the target stereogenic centers were introduced by means of crystallization-induced diastereomer transformation (CIDT) in a highly stereoselective fashion. A Maillard-type condensation was crucial to constructing the desired pyrrolic scaffold.
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Affiliation(s)
- Lucia Pinčeková
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Eva Jančiová
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Dušan Berkeš
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
| | - Róbert Gyepes
- Department of Inorganic Chemistry, Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Andrej Kolarovič
- Department of Chemistry, Faculty of Education, Trnava University, Priemyselná 4, 918 43 Trnava, Slovakia
| | - Oľga Caletková
- Institute of Organic Chemistry, Catalysis and Petrochemistry, Slovak University of Technology, Radlinského 9, 812 37 Bratislava, Slovakia
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4
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Kánya N, Kun S, Somsák L. Glycopyranosylidene-Spiro-Morpholinones: Evaluation of the Synthetic Possibilities Based on Glyculosonamide Derivatives and a New Method for the Construction of the Morpholine Ring. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227785. [PMID: 36431884 PMCID: PMC9698030 DOI: 10.3390/molecules27227785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/07/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022]
Abstract
Glycosylidene-spiro-morpholin(on)es are scarcely described skeletons in the literature. In this work, we have systematically explored the synthetic routes towards such morpholinones based on the reactions of O-peracylated hept-2-ulopyranosonamide derivatives of D-gluco and D-galacto configuration. Koenigs-Knorr type glycosylation of 2-chloroethanol, allylic and propargylic alcohols by (glyculosylbromide)onamides furnished the expected glycosides. The 2-chloroethyl glycosides were ring closed to the corresponding spiro-morpholinones by treatment with K2CO3. The (allyl glyculosid)onamides gave diastereomeric mixtures of spiro-5-hydroxymorpholinones by ozonolysis and 5-iodomethylmorpholinones under iodonium ion mediated conditions. The ozonolytic method has not yet been known for the construction of morpholine rings, therefore, it was also extended to O-allyl mandelamide. The 5-hydroxymorpholinones were subjected to oxidation and acid catalyzed elimination reactions to give the corresponding morpholine-3,5-dions and 5,6-didehydro-morpholin-3-ones, respectively. Base induced elimination of the 5-iodomethylmorpholinones gave 5-methyl-2H-1,4-oxazin-3(4H)-ones. O-Acyl protecting groups of all of the above compounds were removed under Zemplén conditions. Some of the D-gluco configured unprotected compounds were tested as inhibitors of glycogen phosphorylase, but showed no significant effect.
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5
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Kil YS, Baral A, Jeong BS, Laatikainen P, Liu Y, Han AR, Hong MJ, Kim JB, Choi H, Park PH, Nam JW. Combining NMR and MS to Describe Pyrrole-2-Carbaldehydes in Wheat Bran of Radiation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:13002-13014. [PMID: 36167496 DOI: 10.1021/acs.jafc.2c04771] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Nuclear magnetic resonance (NMR) spectroscopy and mass spectrometry (MS) are indispensable analytical tools to provide chemical fingerprints in metabolomics studies. The present study evaluated radiation breeding wheat lines for chemical changes by non-targeted NMR-based metabolomics analysis of bran extracts. Multivariate analysis following spectral binning suggested pyrrole-2-carbaldehydes as chemical markers of four mutant lines with distinct NMR fingerprints in a δH range of 9.28-9.40 ppm. Further NMR and MS data analysis, along with chromatographic fractionation and synthetic preparation, aimed at structure identification of marker metabolites and identified five pyrrole-2-carbaldehydes. Quantum-mechanical driven 1H iterative full spin analysis (QM-HiFSA) on synthetic pyrrole-2-carbaldehydes provided a precise description of complex peak patterns. Biological evaluation of pyrrole-2-carbaldehydes was performed with nine synthetic products, and six compounds showed hepatoprotective effects via modulation of reactive oxygen species production. Given that three out of five identified in wheat bran of radiation were described for hepatoprotective activity, the value of radiation mutation to greatly enhance pyrrole-2-carbaldehyde production was supported.
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Affiliation(s)
- Yun-Seo Kil
- College of Pharmacy, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
| | - Ananda Baral
- College of Pharmacy, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
| | - Byeong-Seon Jeong
- College of Pharmacy, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
| | | | - Yang Liu
- Product Quality & Analytical Method Department, United States Pharmacopeial Convention, Rockville, Maryland 20852, United States
| | - Ah-Reum Han
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do 56212, South Korea
| | - Min-Jeong Hong
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do 56212, South Korea
| | - Jin-Baek Kim
- Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup-si, Jeollabuk-do 56212, South Korea
| | - Hyukjae Choi
- College of Pharmacy, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
| | - Pil-Hoon Park
- College of Pharmacy, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
| | - Joo-Won Nam
- College of Pharmacy, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
- Research Institute of Cell Culture, Yeungnam University, Gyeongsan-si, Gyeongsangbuk-do 38541, South Korea
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6
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Xia M, Moussa Z, Judeh ZMA. Acetic Acid‐Catalyzed Selective Synthesis of
N
‐Substituted 2‐Amino‐3‐Cyanopyrroles
via
a Three‐Component Reaction Between Carbohydrates, Primary Amines and Malononitrile. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Mengxin Xia
- School of Chemical and Biomedical Engineering Nanyang Technological University 62 Nanyang Drive, N1.2-B1-14 637459 Singapore Singapore
| | - Ziad Moussa
- Ziad Moussa – Department of Chemistry College of Science United Arab Emirates University P. O. Box 15551 Al Ain United Arab Emirates
| | - Zaher M. A. Judeh
- School of Chemical and Biomedical Engineering Nanyang Technological University 62 Nanyang Drive, N1.2-B1-14 637459 Singapore Singapore
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7
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Xia M, Moussa Z, Judeh ZMA. Selective One-Pot Multicomponent Synthesis of N-Substituted 2,3,5-Functionalized 3-Cyanopyrroles via the Reaction between α-Hydroxyketones, Oxoacetonitriles, and Primary Amines. Molecules 2022; 27:5285. [PMID: 36014523 PMCID: PMC9416797 DOI: 10.3390/molecules27165285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 11/16/2022] Open
Abstract
A one-step, three-component reaction between α-hydroxyketones, oxoacetonitriles, and primary amines gives N-substituted 2,3,5-functionalized 3-cyanopyrroles with complete selectivity in up to 90% isolated yields. The reaction worked on a wide substrate scope under mild reaction conditions (AcOH as a catalyst, EtOH, 70 °C, 3 h). The reaction proceeded with very high atom efficiency as water is the only molecule lost during the reaction. The practicality of the reaction was demonstrated on a large gram scale. The structures of the 3-cyanopyrroles were confirmed by single-crystal X-ray diffraction and NMR; this work provides a general and practical entry to pyrrole scaffolds suitably decorated for the synthesis of various bioactive pyrroles in a concise manner.
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Affiliation(s)
- Mengxin Xia
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, N1.2–B1-14, Singapore 637459, Singapore
| | - Ziad Moussa
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Zaher M. A. Judeh
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, N1.2–B1-14, Singapore 637459, Singapore
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8
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Abstract
Indolizidine alkaloids have been the target of chemical and biological studies for decades, most recently highlighted by the isolation of the curvulamine and bipolamine polypyrrole-containing subclass. Herein we report a stereoselective 15-step synthesis of bipolamine I, a distinct member of the broader family, and through this work develop an intermediate that will serve to access other polypyrrole natural products and key analogues going forward.
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Affiliation(s)
- Xiang Qiu
- Department of Chemistry and Comparative Medicine Institute, NC State University, Raleigh, North Carolina 27695, United States
| | - Joshua G Pierce
- Department of Chemistry and Comparative Medicine Institute, NC State University, Raleigh, North Carolina 27695, United States
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9
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Gu Z, Jin Z, Schwarz P, Rao J, Chen B. Uncovering aroma boundary compositions of barley malts by untargeted and targeted flavoromics with HS-SPME-GC-MS/olfactometry. Food Chem 2022; 394:133541. [PMID: 35759835 DOI: 10.1016/j.foodchem.2022.133541] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 06/07/2022] [Accepted: 06/19/2022] [Indexed: 11/04/2022]
Abstract
In this study, HS-SPME/GC-MS based untargeted and targeted flavoromics combing with olfactometry were employed to uncover aroma boundary compositions of five types of commercial barley malts with a wide range of Lovibond (L), including kilned base malts (1.8 L and 3.5 L) and roasted caramel malts (10 L, 60 L, and 120 L). Thirty-two compounds were identified as aroma-active with modified detection frequency (MF) > 50%. 3-Methylbutanal (malty), (2E)-nonenal (fatty, cardboard-like), and 2-furfural (burnt, bready) were recognized as the most influential odorants with MF > 70% in all the malts. After untargeted flavoromics, twenty-eight aromas were retained and quantitated. Furthermore, aroma boundary compositions inside/among malt groups were explored with PLS-DA. Eight aroma markers, 3-methylbutanal, 2-isopropyl-5-methyl-2-hexenal, (2E,4E)-Decadienal, 2-furfual, maltol, 2-acetylpyrrole, phenylacetaldehyde, and ethyl hexadecanoate were shortlisted for aroma boundary compositions regarding to the Lovibond of malts.
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Affiliation(s)
- Zixuan Gu
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Zhao Jin
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Paul Schwarz
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Jiajia Rao
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Bingcan Chen
- Department of Plant Sciences, North Dakota State University, Fargo, ND 58108, USA.
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10
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Fouotsa H, Mkounga P, Lannang AM, Vanheuverzwijn J, Zhou Z, Leblanc K, Rharrabti S, Nkengfack AE, Gallard JF, Fontaine V, Meyer F, Poupon E, Le Pogam P, Beniddir MA. Pyrrovobasine, hybrid alkylated pyrraline monoterpene indole alkaloid pseudodimer discovered using a combination of mass spectral and NMR-based machine learning annotations. Org Biomol Chem 2021; 20:98-105. [PMID: 34596204 DOI: 10.1039/d1ob01791h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A new vobasine-tryptamine-based monoterpene indole alkaloid pseudodimer was isolated from the stem bark of Voacanga africana. As a minor constituent occurring in a thoroughly investigated plant, this molecule was targeted based on a molecular networking strategy and a rational MS2-guided phytochemical investigation led to its isolation. Its structure was formally established based on HRMS, 1D/2D NMR data, and the application of the tool Small Molecule Accurate Recognition Technology (SMART 2.0). Its absolute configuration was assigned by the exciton chirality method and TD-DFT ECD calculations. Besides featuring an unprecedented intermonomeric linkage in the small group of vobasine/tryptamine hybrids, pyrrovobasine also represents the first pyrraline-containing representative in the whole monoterpene indole alkaloids group. Biosynthetic hypotheses possibly underpinning these structural oddities are proposed here.
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Affiliation(s)
- Hugues Fouotsa
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 5 rue J.-B. Clément, 92290 Châtenay-Malabry, France. .,Faculty of Pharmacy, Microbiology, Bioorganic and Macromolecular Chemistry Unit, Université Libre de Bruxelles, Campus de la Plaine-CP 206/04, Boulevard du Triomphe, ACC.2, Po Box 1050, Belgium.,Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Pierre Mkounga
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Alain Meli Lannang
- Department of Chemistry, Higher Teachers Training College, University of Maroua, P.O. Box 55, Maroua, Cameroon
| | - Jérôme Vanheuverzwijn
- Faculty of Pharmacy, Microbiology, Bioorganic and Macromolecular Chemistry Unit, Université Libre de Bruxelles, Campus de la Plaine-CP 206/04, Boulevard du Triomphe, ACC.2, Po Box 1050, Belgium
| | - Zhiyu Zhou
- Faculty of Pharmacy, Microbiology, Bioorganic and Macromolecular Chemistry Unit, Université Libre de Bruxelles, Campus de la Plaine-CP 206/04, Boulevard du Triomphe, ACC.2, Po Box 1050, Belgium
| | - Karine Leblanc
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 5 rue J.-B. Clément, 92290 Châtenay-Malabry, France.
| | - Somia Rharrabti
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 5 rue J.-B. Clément, 92290 Châtenay-Malabry, France.
| | - Augustin Ephrem Nkengfack
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P.O. Box 812, Yaoundé, Cameroon
| | - Jean-François Gallard
- Institut de Chimie des Substances Naturelles, CNRS, ICSN UPR 2301, Université Paris-Saclay, 91198 Gif-sur-Yvette, France
| | - Véronique Fontaine
- Faculty of Pharmacy, Microbiology, Bioorganic and Macromolecular Chemistry Unit, Université Libre de Bruxelles, Campus de la Plaine-CP 206/04, Boulevard du Triomphe, ACC.2, Po Box 1050, Belgium
| | - Franck Meyer
- Faculty of Pharmacy, Microbiology, Bioorganic and Macromolecular Chemistry Unit, Université Libre de Bruxelles, Campus de la Plaine-CP 206/04, Boulevard du Triomphe, ACC.2, Po Box 1050, Belgium
| | - Erwan Poupon
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 5 rue J.-B. Clément, 92290 Châtenay-Malabry, France.
| | - Pierre Le Pogam
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 5 rue J.-B. Clément, 92290 Châtenay-Malabry, France.
| | - Mehdi A Beniddir
- Équipe "Chimie des Substances Naturelles" Université Paris-Saclay, CNRS, BioCIS, 5 rue J.-B. Clément, 92290 Châtenay-Malabry, France.
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Purnomo KA, Korinek M, Tsai YH, Hu HC, Wang YH, Backlund A, Hwang TL, Chen BH, Wang SW, Wu CC, Chang FR. Decoding Multiple Biofunctions of Maca on Its Anti-allergic, Anti-inflammatory, Anti-thrombotic, and Pro-angiogenic Activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:11856-11866. [PMID: 34590863 DOI: 10.1021/acs.jafc.1c03485] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Four active partition layers and ten isolates, including (5R)- and (5S)-macapyrrolidone A (1a, 1b), and four new alkaloids, (5R)- and (5S)-macapyrrolidone B (2a, 2b) and macapyrrolins D, E (3, 4), were isolated from maca (Lepidium meyenii Walp.), an indigenous food plant from Peru. Derived from the n-hexane layer, the macamide-rich fraction exhibited pro-angiogenic activity on EPC and HUVEC cells. Anti-thrombotic activity was displayed by the polar part of maca extracts (n-butanol and water layers). Both 75% methanol aq. (midlower polar part) and n-hexane (low polar part) layers, which showed signs of fatty acid content, markedly inhibited superoxide and elastase release in an anti-inflammatory assay. The 75% methanol aq. layer showed strong anti-allergic activity, and macapyrrolin A (5) was found active based on β-hexosaminidase release inhibition assays and a ChemGPS-NP experiment. These valuable bioactivity results suggest that maca is a food plant with good benefits for human health.
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Affiliation(s)
- Kartiko Arif Purnomo
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Michal Korinek
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
| | - Yi-Hong Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Hao-Chun Hu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yi-Hsuan Wang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Anders Backlund
- Research Group Pharmacognosy, Department of Pharmaceutical Biochemistry, Uppsala University, BMC, Box 574, S-75123 Uppsala, Sweden
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital 33305 Taoyuan, Taiwan
| | - Bing-Hung Chen
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Shih-Wei Wang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 25245, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City 25245, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City 25245, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
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12
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Cho S, Gu L, In IJ, Wu B, Lee T, Kim H, Koo S. Ribose conversion with amino acids into pyrraline platform chemicals - expeditious synthesis of diverse pyrrole-fused alkaloid compounds. RSC Adv 2021; 11:31511-31525. [PMID: 35496880 PMCID: PMC9041667 DOI: 10.1039/d1ra06110k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 09/13/2021] [Indexed: 11/21/2022] Open
Abstract
One-pot conversion of sustainable d-ribose with l-amino acid, methyl esters produced pyrrole-2-carbaldehydes 5 in reasonable yields (32-63%) under pressurized conditions of 2.5 atm at 80 °C. The value-added pyrraline compounds 5 as platform chemicals were utilized for quick installation of poly-heterocyclic cores for the development of pyrrole-motif natural and artificial therapeutic agents. A pyrrole-fused piperazin-2-one scaffold 6 was prepared by reductive amination of pyrralines 5 with benzylamine. While further cyclization of pyrralines 5 with ethane-1,2-diamine produced pyrrolo-piperazin-2-ones 7 with an extra imidazolidine ring, the reaction with 2-amino alcohols derived from natural l-amino acids, alanine, valine, and phenylalanine, respectively provided pyrrolo-piperazin-2-ones 8, 9, and 10 with oxazolidine as the third structural core. Cell viability and an anti-inflammatory effect of the synthesized compounds were briefly tested by the MTT method and the Griess assay, among which 8h and 10g exhibited significant anti-inflammatory effects with negligible cell toxicity.
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Affiliation(s)
- Soohyeon Cho
- Department of Energy Science and Technology, Department of Chemistry, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
| | - Lina Gu
- Department of Energy Science and Technology, Department of Chemistry, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
- School of Pharmacy, East China University of Science and Technology Meilong Road 130 Shanghai 200237 China
| | - Ik Joon In
- Department of Energy Science and Technology, Department of Chemistry, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
| | - Bo Wu
- School of Forensic Medicine, China Medical University Puhe Road 77 Shenyang 110122 China
| | - Taehoon Lee
- Global Center for Pharmaceutical Ingredient Materials, Department of Applied Chemistry, Kyung Hee University Yongin Gyeonggi-Do 17104 Korea
| | - Hakwon Kim
- Global Center for Pharmaceutical Ingredient Materials, Department of Applied Chemistry, Kyung Hee University Yongin Gyeonggi-Do 17104 Korea
| | - Sangho Koo
- Department of Energy Science and Technology, Department of Chemistry, Myongji University Myongji-Ro 116, Cheoin-Gu Yongin Gyeonggi-Do 17058 Korea
- School of Pharmacy, East China University of Science and Technology Meilong Road 130 Shanghai 200237 China
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13
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Seipp K, Geske L, Opatz T. Marine Pyrrole Alkaloids. Mar Drugs 2021; 19:514. [PMID: 34564176 PMCID: PMC8471394 DOI: 10.3390/md19090514] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 09/05/2021] [Accepted: 09/07/2021] [Indexed: 12/13/2022] Open
Abstract
Nitrogen heterocycles are essential parts of the chemical machinery of life and often reveal intriguing structures. They are not only widespread in terrestrial habitats but can also frequently be found as natural products in the marine environment. This review highlights the important class of marine pyrrole alkaloids, well-known for their diverse biological activities. A broad overview of the marine pyrrole alkaloids with a focus on their isolation, biological activities, chemical synthesis, and derivatization covering the decade from 2010 to 2020 is provided. With relevant structural subclasses categorized, this review shall provide a clear and timely synopsis of this area.
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Affiliation(s)
| | | | - Till Opatz
- Department of Chemistry, Organic Chemistry Section, Johannes Gutenberg University, Duesbergweg 10–14, 55128 Mainz, Germany; (K.S.); (L.G.)
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14
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Azomethine ylide cycloaddition of 2-C-formyl glycals with α-amino acids for the synthesis of substituted pyrroles. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Ghosh A, Barik S, Barik S, Shee S, Biju AT. Oxidative N-heterocyclic carbene (NHC) catalysis for the rapid access to functionalized pyrrolo-oxazinones. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Philkhana SC, Badmus FO, Dos Reis IC, Kartika R. Recent Advancements in Pyrrole Synthesis. SYNTHESIS-STUTTGART 2021; 53:1531-1555. [PMID: 34366491 PMCID: PMC8340853 DOI: 10.1055/s-0040-1706713] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
This review article features selected examples on the synthesis of functionalized pyrroles that were reported between 2014 and 2019. Pyrrole is an important nitrogen-containing aromatic heterocycle that can be found in numerous compounds of biological and material significance. Given its vast importance, pyrrole continues to be an attractive target for the development of new synthetic reactions. The contents of this article are organized by the starting materials, which can be broadly classified into four different types: substrates bearing π-systems, substrates bearing carbonyl and other polar groups, and substrates bearing heterocyclic motifs. Brief discussions on plausible reaction mechanisms for most transformations are also presented.
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Affiliation(s)
- Satish Chandra Philkhana
- Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA 70803, USA
| | - Fatimat O Badmus
- Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA 70803, USA
| | - Isaac C Dos Reis
- Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA 70803, USA
| | - Rendy Kartika
- Department of Chemistry, Louisiana State University, 232 Choppin Hall, Baton Rouge, LA 70803, USA
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17
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Tian W, Chen G, Tilley M, Li Y. Changes in phenolic profiles and antioxidant activities during the whole wheat bread-making process. Food Chem 2020; 345:128851. [PMID: 33333355 DOI: 10.1016/j.foodchem.2020.128851] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/06/2020] [Accepted: 12/06/2020] [Indexed: 11/17/2022]
Abstract
Health benefits of whole wheat products are partially attributed to their unique phenolic profiles. This study investigated the effect of bread-making processes on the phenolic profiles and antioxidant activities of four different varieties of hard red winter wheat. The fermentation process generally increased soluble phenolic content, flavonoid content, antioxidant activities, and soluble ferulic acid of whole wheat products. The baking process increased the soluble phenolic content and antioxidant activities. Some phenolic acids were incorporated into Maillard reaction products during baking. For the insoluble fraction, fermentation and baking slightly increased phenolic content, flavonoid content, and antioxidant activities of certain wheat varieties. Ferulic acid and isomers of di-ferulic acid (DFA) were not significantly affected by the baking process. Overall, the bread-making process demonstrated positive effects on the potential health benefits of whole wheat products.
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Affiliation(s)
- Wenfei Tian
- Department of Grain Science and Industry, Kansas State University, Manhattan, KS 66606, USA
| | - Gengjun Chen
- Department of Grain Science and Industry, Kansas State University, Manhattan, KS 66606, USA
| | - Michael Tilley
- USDA, Agricultural Research Service, Center for Grain and Animal Health Research, 1515 College Ave, Manhattan, KS 66502, USA
| | - Yonghui Li
- Department of Grain Science and Industry, Kansas State University, Manhattan, KS 66606, USA.
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18
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Copper-catalyzed cycloisomerization of alkynylaziridines to access functionalized 2-substituted-4-formylpyrroles. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Identification of a Novel Pyrrole Alkaloid from the Edible Mushroom Basidiomycetes-X (Echigoshirayukidake). Molecules 2020; 25:molecules25214879. [PMID: 33105737 PMCID: PMC7672639 DOI: 10.3390/molecules25214879] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 10/15/2020] [Accepted: 10/20/2020] [Indexed: 12/19/2022] Open
Abstract
Three pyrrole alkaloid derivatives were isolated from the edible mushroom Basidiomycetes-X (Echigoshirayukidake) by water extraction followed by ethyl acetate fractionation. The chemical structures determined by MS and NMR were 4-[2-formyl-5-(hydroxymethyl)-1H-pyrrol-1-yl] butanoic acid (compound I), 4-[2-formyl-5-(hydroxymethyl)-1H-pyrrol-1-yl] butanamide (compound II), and 5-(hydroxymethyl)-1H-pyrrole-2-carboxaldehyde (compound III). Compound I was found to be the major component, followed by compound II, and compound III was the minor component. The dry powder of Basidiomycetes-X contained approximately 825 μg g−1 compound I and 484 μg g−1 compound II. Compound II was found to be a novel pyrrole aldehyde homologue not previously reported and thus is a specific component of this mushroom.
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20
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Quiroga D, Becerra LD, Coy-Barrera E. Solvent Free Three-Component Synthesis of 2,4,5-trisubstituted-1 H-pyrrol-3-ol-type Compounds from L-tryptophan: DFT-B3LYP Calculations for the Reaction Mechanism and 3 H-pyrrol-3-one↔1 H-pyrrol-3-ol Tautomeric Equilibrium. Molecules 2020; 25:molecules25194402. [PMID: 32992704 PMCID: PMC7582317 DOI: 10.3390/molecules25194402] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 09/19/2020] [Accepted: 09/24/2020] [Indexed: 11/16/2022] Open
Abstract
In this paper, we describe the solvent-free three-component synthesis of 2,4,5-trisubstituted-1H-pyrrol-3-ol-type compounds from L-tryptophan. The first step of the synthetic methodology involved the esterification of L-tryptophan in excellent yields (93-98%). Equimolar mixtures of alkyl 2-aminoesters, 1,3-dicarbonyl compounds, and potassium hydroxide (0.1 eq.) were heated under solvent-free conditions. The title compounds were obtained in moderate to good yields (45%-81%). Density functional theory using "Becke, 3-parameter, Lee-Yang-Parr" correlational functional (DFT-B3LYP) calculations were performed to understand the molecular stability of the synthesized compounds and the tautomeric equilibrium from 3H-pyrrol-3-one type intermediates to 1H-pyrrol-3-ol type aromatized rings.
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21
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Xu K, Li W, Sun R, Luo L, Chen X, Zhang C, Zheng X, Yuan M, Fu H, Li R, Chen H. Synthesis of 2-Formylpyrroles from Pyridinium Iodide Salts. Org Lett 2020; 22:6107-6111. [PMID: 32678611 DOI: 10.1021/acs.orglett.0c02178] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first I2-mediated synthesis of 2-formylpyrroles from pyridinium salts is reported. This protocol enables the synthesis of diversely substituted 2-formylpyrroles in good yields under operationally simple conditions. The detailed mechanistic studies reveal that the reaction proceeds via a novel H2O-triggered ring opening of the pyridinium salt and a subsequent intramolecularly nucleophilic addition sequence.
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Affiliation(s)
- Ke Xu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Wenjing Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Rui Sun
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Lihua Luo
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Xue Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Chunchun Zhang
- Analytical & Testing Center, Sichuan University, Chengdu, Sichuan 610064, P. R. China
| | - Xueli Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Maolin Yuan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Haiyan Fu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Ruixiang Li
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
| | - Hua Chen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, P. R. China
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22
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Morikawa D, Morii K, Yasuda Y, Mori A, Okano K. Convergent Total Synthesis of Lamellarins and Their Congeners. J Org Chem 2020; 85:8603-8617. [PMID: 32462869 DOI: 10.1021/acs.joc.0c00998] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A convergent total synthesis of lamellarins S and Z is described. The synthesis features a halogen dance of an easily accessible α,β-dibromopyrrole promoted by an ester moiety. The resultant β,β'-dibromopyrrole undergoes a ligand-controlled Suzuki-Miyaura coupling to provide a range of diarylated pyrrole derivatives. The established synthetic method was also applicable to the synthesis of ningalin B and lukianols A and B.
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Affiliation(s)
- Daiki Morikawa
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| | - Kazuki Morii
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| | - Yuto Yasuda
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| | - Atsunori Mori
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan.,Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
| | - Kentaro Okano
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan
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23
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Liu G, Hao F, He X, Xu Y, Jin Z, Jiang H, Wu J. Catalyst‐ and Additive‐free Synthesis of α‐Pyrrolyl Amides upon Treatment of α‐Keto Amides with 4‐Hydroxy‐L‐proline. ChemistrySelect 2020. [DOI: 10.1002/slct.202002037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Guyue Liu
- School of Pharmaceutical and Materials EngineeringTaizhou UniversityJiaojiang 318000Zhejiang Province China
| | - Feiyue Hao
- School of Pharmaceutical and Materials EngineeringTaizhou UniversityJiaojiang 318000Zhejiang Province China
| | - Xiaoyu He
- School of Pharmaceutical and Materials EngineeringTaizhou UniversityJiaojiang 318000Zhejiang Province China
| | - Yan Xu
- School of Pharmaceutical and Materials EngineeringTaizhou UniversityJiaojiang 318000Zhejiang Province China
| | - Zhengneng Jin
- School of Pharmaceutical and Materials EngineeringTaizhou UniversityJiaojiang 318000Zhejiang Province China
| | - Huajiang Jiang
- School of Pharmaceutical and Materials EngineeringTaizhou UniversityJiaojiang 318000Zhejiang Province China
| | - Jiashou Wu
- School of Pharmaceutical and Materials EngineeringTaizhou UniversityJiaojiang 318000Zhejiang Province China
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24
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Zhou X, Ulaszewska MM, Cuparencu C, De Gobba C, Vázquez-Manjarrez N, Gürdeniz G, Chen J, Mattivi F, Dragsted LO. Urine Metabolome Profiling Reveals Imprints of Food Heating Processes after Dietary Intervention with Differently Cooked Potatoes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:6122-6131. [PMID: 32338001 DOI: 10.1021/acs.jafc.0c01136] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Heat treatment is a widely used method for food processing, and the compounds formed by heat processes may serve as biomarkers of heated food intake in nutrition studies. Therefore, we aimed to characterize the differential metabolic signatures resulting from intake of different potato products and identify potential intake biomarkers. In a randomized, controlled, crossover meal study, healthy volunteers consumed boiled rice, boiled potatoes, and two deep-fried potato products, potato chips and French fries. The urine metabolome was acquired by LC-MS-based untargeted metabolomics. Twenty-two selected metabolites were found for deep-fried potatoes, two for potato intake in general, and one for boiled rice. Fourteen of the 22 selected metabolites were tentatively identified as furan-, pyrrole- and pyrazine-derived compounds indicative of Maillard reactions. With further validation, these candidate biomarkers will be important tools to investigate the influence of heated foods on human health.
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Affiliation(s)
- Xiaomin Zhou
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg 1958, Denmark
| | - Maria M Ulaszewska
- Department of Food Quality and Nutrition, Fondazione Edmund Mach, Research and Innovation Centre, San Michele all'Adige 38010, Italy
- Center for Omics Sciences, Proteomics and Metabolomics Facility-ProMeFa, IRCCS San Raffaele Scientific Institute, Milan 20132, Italy
| | - Cătălina Cuparencu
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg 1958, Denmark
| | - Cristian De Gobba
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg 1958, Denmark
- Department of Food Science, Faculty of Science, University of Copenhagen, Frederiksberg 1958, Denmark
| | - Natalia Vázquez-Manjarrez
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg 1958, Denmark
- Dirección de Nutrición, Instituto Nacional de Ciencias Médicas y Nutrición Slavador Zubirán, Mexico City 14080, Mexico
| | - Gözde Gürdeniz
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg 1958, Denmark
| | - Jie Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi 214122, China
| | - Fulvio Mattivi
- Department of Food Quality and Nutrition, Fondazione Edmund Mach, Research and Innovation Centre, San Michele all'Adige 38010, Italy
- CIBIO - Department of Cellular, Computational, and Integrative Biology, University of Trento, Trento 38122, Italy
| | - Lars Ove Dragsted
- Department of Nutrition, Exercise and Sports, University of Copenhagen, Frederiksberg 1958, Denmark
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25
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Abstract
Curvulamine and related polypyrrole alkaloids represent a fascinating new class of natural products with unprecedented chemical structures, intriguing biological activities, and mysterious biosynthetic origins. Herein we report the first studies toward these molecules, resulting in a 10-step total synthesis of (-)-curvulamine, a dimeric member with promising Gram-positive and -negative antibiotic activity. A number of interesting chemical findings, including exploitation of the heteroaromatic pyrrolo[1,2-a]azepinone nucleus and an efficient stereodivergent reduction, are reported.
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Affiliation(s)
- Karl T Haelsig
- Department of Chemistry , University of California-Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
| | - Jun Xuan
- Department of Chemistry , University of California-Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
| | - Thomas J Maimone
- Department of Chemistry , University of California-Berkeley , 826 Latimer Hall , Berkeley , California 94720 , United States
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26
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Qiu J, Gao S, Li C, Zhang L, Wang Z, Wang X, Ding K. Construction of All-Carbon Chiral Quaternary Centers through Cu I -Catalyzed Enantioselective Reductive Hydroxymethylation of 1,1-Disubstituted Allenes with CO 2. Chemistry 2019; 25:13874-13878. [PMID: 31461578 DOI: 10.1002/chem.201903906] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Indexed: 12/18/2022]
Abstract
A catalytic enantioselective construction of all-carbon chiral quaternary centers through reductive hydroxymethylation of 1,1-disubstituted allenes with CO2 has been developed. In the presence of a copper/Mandyphos catalyst, CO2 is transformed into an alcohol oxidation level by an asymmetric reductive C-C bond formation with allenes by using hydrosilane (HSi(OMe)2 Me) as a reductant. The resulting chiral homoallylic alcohols are versatile synthetic intermediates and can be conveniently converted into a variety of useful chiral chemicals.
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Affiliation(s)
- Jia Qiu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shen Gao
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chaopeng Li
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Lei Zhang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Zheng Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Xiaoming Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China
| | - Kuiling Ding
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai, 200032, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.,Collaborative Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin, 300071, P. R. China
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27
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Kim MJ, Gaube SM, Beh MHR, Smith CD, Thompson A. Synthesis and reactivity of 2-thionoester pyrroles: a route to 2-formyl pyrroles. RSC Adv 2019; 9:31773-31780. [PMID: 35527977 PMCID: PMC9072669 DOI: 10.1039/c9ra07527e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 09/20/2019] [Indexed: 12/05/2022] Open
Abstract
2-Functionalised pyrroles exhibit considerable synthetic utility. Herein, the synthesis and reactivity of 2-thionoester (-C(S)OR) pyrroles is reported. 2-Thionoester pyrroles were synthesised using a Knorr-type approach from aliphatic starting materials. 2-Thionoester pyrroles were reduced to the corresponding 2-formyl pyrroles, or the deuterated formyl variant, in one step using RANEY® nickel, thereby removing the need for the much-utilised hydrolysis/decarboxylation/formylation steps that are typically required to convert Knorr-type 2-carboxylate pyrroles into 2-formyl pyrroles. 2-Thionoester pyrroles proved tolerant of typical functional group interconversions for which the parent 2-carboxylate pyrroles have become known.
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Affiliation(s)
- Min Joon Kim
- Department of Chemistry, Dalhousie University P. O. Box 15000 Halifax NS B3H 4R2 Canada
| | - Sophie M Gaube
- Department of Chemistry, Dalhousie University P. O. Box 15000 Halifax NS B3H 4R2 Canada
| | - Michael H R Beh
- Department of Chemistry, Dalhousie University P. O. Box 15000 Halifax NS B3H 4R2 Canada
| | - Craig D Smith
- Department of Chemistry, Dalhousie University P. O. Box 15000 Halifax NS B3H 4R2 Canada
| | - Alison Thompson
- Department of Chemistry, Dalhousie University P. O. Box 15000 Halifax NS B3H 4R2 Canada
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28
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Qi B, Yang W, Ding N, Luo Y, Jia F, Liu X, Wang J, Wang X, Tu P, Shi S. Pyrrole 2-carbaldehyde derived alkaloids from the roots of Angelica dahurica. J Nat Med 2019; 73:769-776. [DOI: 10.1007/s11418-019-01328-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Accepted: 06/06/2019] [Indexed: 01/25/2023]
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