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Asymmetric synthesis of sex pheromone of the western hemlock looper, Lambdina fiscellaria lugubrosa (Hulst). Tetrahedron Lett 2023. [DOI: 10.1016/j.tetlet.2023.154401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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2
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Yu S, Yuan G, Liu J, Bian Q, Wang M, Zhong J. Asymmetric synthesis of the sex pheromone of the apple leafminer, Lyonetia prunifoliella. Chirality 2023; 35:118-128. [PMID: 36573613 DOI: 10.1002/chir.23524] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/24/2022] [Accepted: 12/01/2022] [Indexed: 12/28/2022]
Abstract
Lyonetia prunifoliella is a significant pest in orchards and damages apple. The sex pheromones of this pest were prepared via a new and concise method. The central to our method were Evans' chiral auxiliaries, the addition of chiral Grignard reagent to aldehyde and Wittig coupling.
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Affiliation(s)
- Shihang Yu
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Gucheng Yuan
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Jiawei Liu
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Qinghua Bian
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Min Wang
- Department of Applied Chemistry, China Agricultural University, Beijing, China
| | - Jiangchun Zhong
- Department of Applied Chemistry, China Agricultural University, Beijing, China
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3
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Wang X, Wang J, Ma F, Bian Q, Wang M, Zhong J. Asymmetric Synthesis of Contact Sex Pheromone of Tetropium fuscum and Its Enantiomer. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27206897. [PMID: 36296492 PMCID: PMC9611917 DOI: 10.3390/molecules27206897] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 10/11/2022] [Accepted: 10/12/2022] [Indexed: 11/08/2022]
Abstract
Tetropium fuscum is a harmful forest pest and attacks spruces. The contact sex pheromone of this pest, (S)-11-methyl-heptacosane, and its enantiomer were synthesized via Evans' chiral auxiliaries. The key steps of this approach included acylation of carboxylic acid, diastereoselective methylation of oxazolidinone amide, and Wittig coupling of the aldehyde with chiral phosphonium salt. The synthetic pheromones would have potential utility in the control of this pest.
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Affiliation(s)
- Xueyang Wang
- Department of Applied Chemistry, China Agricultural University, 2 West Yuanmingyuan Road, Beijing 100193, China
| | - Jianan Wang
- Department of Applied Chemistry, China Agricultural University, 2 West Yuanmingyuan Road, Beijing 100193, China
| | - Fengbo Ma
- College of Enviromental Sciences, Sichuan Agricultural University, 211 Huimin Road, Chengdu 611130, China
| | - Qinghua Bian
- Department of Applied Chemistry, China Agricultural University, 2 West Yuanmingyuan Road, Beijing 100193, China
| | - Min Wang
- Department of Applied Chemistry, China Agricultural University, 2 West Yuanmingyuan Road, Beijing 100193, China
| | - Jiangchun Zhong
- Department of Applied Chemistry, China Agricultural University, 2 West Yuanmingyuan Road, Beijing 100193, China
- Correspondence: ; Tel.: +86-010-6273-1356
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4
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Fernández-López M, Sánchez-Reyes A, Barcelos C, Sidón-Ceseña K, Leite RB, Lago-Lestón A. Deep-Sea Sediments from the Southern Gulf of Mexico Harbor a Wide Diversity of PKS I Genes. Antibiotics (Basel) 2022; 11:antibiotics11070887. [PMID: 35884142 PMCID: PMC9311598 DOI: 10.3390/antibiotics11070887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 06/08/2022] [Accepted: 06/20/2022] [Indexed: 11/19/2022] Open
Abstract
The excessive use of antibiotics has triggered the appearance of new resistant strains, which is why great interest has been taken in the search for new bioactive compounds capable of overcoming this emergency in recent years. Massive sequencing tools have enabled the detection of new microorganisms that cannot be cultured in a laboratory, thus opening the door to the search for new biosynthetic genes. The great variety in oceanic environments in terms of pressure, salinity, temperature, and nutrients enables marine microorganisms to develop unique biochemical and physiological properties for their survival, enhancing the production of secondary metabolites that can vary from those produced by terrestrial microorganisms. We performed a search for type I PKS genes in metagenomes obtained from the marine sediments of the deep waters of the Gulf of Mexico using Hidden Markov Models. More than 2000 candidate genes were detected in the metagenomes that code for type I PKS domains, while biosynthetic pathways that may code for other secondary metabolites were also detected. Our research demonstrates the great potential use of the marine sediments of the Gulf of Mexico for identifying genes that code for new secondary metabolites.
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Affiliation(s)
- Maikel Fernández-López
- Centro de Investigación en Dinámica Celular, Instituto de Investigación en Ciencias Básicas y Aplicadas, Universidad Autónoma del Estado de Morelos, Av. Universidad 1001, Col. Chamilpa, Cuernavaca 62209, Mexico;
| | - Ayixon Sánchez-Reyes
- CONACYT-Instituto de Biotecnología, Universidad Nacional Autónoma de México (UNAM), Av. Universidad 2001, Col. Chamilpa, Cuernavaca 62210, Mexico;
| | - Clara Barcelos
- Posgrado de Ciencias de la Vida, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico; (C.B.); (K.S.-C.)
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico
| | - Karla Sidón-Ceseña
- Posgrado de Ciencias de la Vida, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico; (C.B.); (K.S.-C.)
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico
| | - Ricardo B. Leite
- Instituto Gulbenkian de Ciência, Rua da Quinta Grande, 6, 2780-156 Oeiras, Portugal;
| | - Asunción Lago-Lestón
- Departamento de Innovación Biomédica, Centro de Investigación Científica y de Educación Superior de Ensenada, Carretera Ensenada-Tijuana No. 3918, Zona Playitas, Ensenada 22860, Mexico
- Correspondence:
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In Silico and In Vitro Assessment of Antimicrobial and Antibiofilm Activity of Some 1,3-Oxazole-Based Compounds and Their Isosteric Analogues. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12115571] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
In this paper, we report on the antimicrobial activity assessment of 49 compounds previously synthesized as derivatives of alanine or phenylalanine that incorporate a 4-(4-X-phenylsulfonyl)phenyl fragment (X = H, Cl, or Br), namely 21 acyclic compounds (6 × N-acyl-α-amino acids, 1 × N-acyl-α-amino acid ester, and 14 × N-acyl-α-amino ketones) and 28 pentatomic heterocycles from the oxazole-based compound class (6 × 4H-1,3-oxazol-5-ones, 16 × 5-aryl-1,3-oxazoles, and 6 × ethyl 1,3-oxazol-5-yl carbonates). Both in silico and in vitro qualitative and quantitative assays were used to investigate the antimicrobial potential of these derivatives against planktonic and biofilm-embedded microbial strains. Some of the tested compounds showed promising antimicrobial and antibiofilm activity depending on their chemical scaffold and lipophilic character.
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6
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Mironov VF, Nemtarev AV, Tsepaeva OV, Dimukhametov MN, Litvinov IA, Voloshina AD, Pashirova TN, Titov EA, Lyubina AP, Amerhanova SK, Gubaidullin AT, Islamov DR. Rational Design 2-Hydroxypropylphosphonium Salts as Cancer Cell Mitochondria-Targeted Vectors: Synthesis, Structure, and Biological Properties. Molecules 2021; 26:6350. [PMID: 34770759 PMCID: PMC8588467 DOI: 10.3390/molecules26216350] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 10/09/2021] [Accepted: 10/11/2021] [Indexed: 11/17/2022] Open
Abstract
It has been shown for a wide range of epoxy compounds that their interaction with triphenylphosphonium triflate occurs with a high chemoselectivity and leads to the formation of (2-hydroxypropyl)triphenylphosphonium triflates 3 substituted in the 3-position with an alkoxy, alkylcarboxyl group, or halogen, which were isolated in a high yield. Using the methodology for the disclosure of epichlorohydrin with alcohols in the presence of boron trifluoride etherate, followed by the substitution of iodine for chlorine and treatment with triphenylphosphine, 2-hydroxypropyltriphenylphosphonium iodides 4 were also obtained. The molecular and supramolecular structure of the obtained phosphonium salts was established, and their high antitumor activity was revealed in relation to duodenal adenocarcinoma. The formation of liposomal systems based on phosphonium salt 3 and L-α-phosphatidylcholine (PC) was employed for improving the bioavailability and reducing the toxicity. They were produced by the thin film rehydration method and exhibited cytotoxic properties. This rational design of phosphonium salts 3 and 4 has promising potential of new vectors for targeted delivery into mitochondria of tumor cells.
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Affiliation(s)
- Vladimir F. Mironov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Andrey V. Nemtarev
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Olga V. Tsepaeva
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Mudaris N. Dimukhametov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Igor A. Litvinov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Alexandra D. Voloshina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Tatiana N. Pashirova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Eugenii A. Titov
- Alexander Butlerov Institute of Chemistry, Kazan (Volga Region) Federal University, 18 Kremlevskaya St., 420008 Kazan, Russia;
| | - Anna P. Lyubina
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Syumbelya K. Amerhanova
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Aidar T. Gubaidullin
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
| | - Daut R. Islamov
- Arbuzov Institute of Organic and Physical Chemistry, FRC Kazan Scientific Center of RAS, 8 Arbuzov St., 420088 Kazan, Russia; (A.V.N.); (O.V.T.); (M.N.D.); (I.A.L.); (A.D.V.); (T.N.P.); (A.P.L.); (S.K.A.); (A.T.G.); (D.R.I.)
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7
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Li W, Zheng Y, Qu E, Bai J, Deng Q. β
‐Keto Amides: A Jack‐of‐All‐Trades Building Block in Organic Chemistry. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wanfang Li
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Yan Zheng
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Erdong Qu
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Jin Bai
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
| | - Qinyue Deng
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai 200093 P. R. China
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Brosge F, Singh P, Almqvist F, Bolm C. Selected applications of Meldrum's acid - a tutorial. Org Biomol Chem 2021; 19:5014-5027. [PMID: 34019615 DOI: 10.1039/d1ob00395j] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Due to its unique structure and the vast array of substituents that can be attached to its core, Meldrum's acid is a molecule with exceptional chemical properties. In water, it has a remarkably low pKa value of about 4.9. Its C5 position is readily involved in electrophilic substitution reactions whereas the C4 and C6 positions are easily attacked by nucleophiles. At elevated temperatures Meldrum's acid undergoes distinctive decomposition pathways, which can be used in cycloaddition and acylation reactions. In this Tutorial Review, the authors intend to introduce the principles of the synthetic chemistry of Meldrum's acid and provide the essential knowledge for the design and preparation of compounds with desired properties. As there are many reviews focusing on a specific detail of Meldrum's acid chemistry, we would like to give a broader picture of this diverse molecule for undergraduate and graduate students as well as experienced lab leaders. For achieving this goal, some recent advances in using Meldrum's acid derivatives in synthetic scenarios are presented with the hope to further stimulate and promote research leading to additional innovative applications of this synthetically highly relevant molecule.
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Affiliation(s)
- Felix Brosge
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Pardeep Singh
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Fredrik Almqvist
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
| | - Carsten Bolm
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany.
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Abstract
This review covers the literature published between January and December in 2018 for marine natural products (MNPs), with 717 citations (706 for the period January to December 2018) referring to compounds isolated from marine microorganisms and phytoplankton, green, brown and red algae, sponges, cnidarians, bryozoans, molluscs, tunicates, echinoderms, mangroves and other intertidal plants and microorganisms. The emphasis is on new compounds (1554 in 469 papers for 2018), together with the relevant biological activities, source organisms and country of origin. Reviews, biosynthetic studies, first syntheses, and syntheses that led to the revision of structures or stereochemistries, have been included. The proportion of MNPs assigned absolute configuration over the last decade is also surveyed.
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Affiliation(s)
- Anthony R Carroll
- School of Environment and Science, Griffith University, Gold Coast, Australia. and Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia
| | - Brent R Copp
- School of Chemical Sciences, University of Auckland, Auckland, New Zealand
| | - Rohan A Davis
- Griffith Institute for Drug Discovery, Griffith University, Brisbane, Australia and School of Environment and Science, Griffith University, Brisbane, Australia
| | - Robert A Keyzers
- Centre for Biodiscovery, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand
| | - Michèle R Prinsep
- Chemistry, School of Science, University of Waikato, Hamilton, New Zealand
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10
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Berton G, Pizzini S, Fabris F, Bertolin T, Pafumi E, Ceccon L, Daelemans J, Borsato G, Scarso A, Piazza R, Ferretti P. Synthesis of C
37
‐Alkenones for Past Climate Reconstructions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Giacomo Berton
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
| | - Sarah Pizzini
- Dipartimento di Scienze Ambientali Informatica e Statistica Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
- Istituto per la Dinamica dei Processi Ambientali Consiglio Nazionale delle Ricerche (CNR‐IDPA) Via Torino 155 30172 Mestre VE Italy
| | - Fabrizio Fabris
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
| | - Tommaso Bertolin
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
| | - Eugenia Pafumi
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
| | - Leonardo Ceccon
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
| | - Jonas Daelemans
- Department of Chemistry Faculty of Science Antwerpen University Groenenborgerlaan 17 2020 Antwerpen Belgium
| | - Giuseppe Borsato
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
| | - Alessandro Scarso
- Dipartimento di Scienze Molecolari e Nanosistemi Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
| | - Rossano Piazza
- Dipartimento di Scienze Ambientali Informatica e Statistica Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
| | - Patrizia Ferretti
- Dipartimento di Scienze Ambientali Informatica e Statistica Università Ca' Foscari Venezia Via Torino 155 30172 Mestre VE Italy
- Istituto per la Dinamica dei Processi Ambientali Consiglio Nazionale delle Ricerche (CNR‐IDPA) Via Torino 155 30172 Mestre VE Italy
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MacIntyre LW, Charles MJ, Haltli BA, Marchbank DH, Kerr RG. An Ichip-Domesticated Sponge Bacterium Produces an N-Acyltyrosine Bearing an α-Methyl Substituent. Org Lett 2019; 21:7768-7771. [DOI: 10.1021/acs.orglett.9b02710] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Logan W. MacIntyre
- Department of Biomedical Sciences, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
| | - Marie J. Charles
- Department of Biology, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
| | - Bradley A. Haltli
- Department of Biomedical Sciences, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
- Nautilus Biosciences Croda, Regis and Joan Duffy Research Centre, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
| | - Douglas H. Marchbank
- Nautilus Biosciences Croda, Regis and Joan Duffy Research Centre, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
- Department of Chemistry, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
| | - Russell G. Kerr
- Department of Biomedical Sciences, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
- Nautilus Biosciences Croda, Regis and Joan Duffy Research Centre, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
- Department of Chemistry, University of Prince Edward Island, 550 University Avenue, Charlottetown, PE Canada, C1A4P3
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Youn UJ, Lee JH, Han SJ. Diketopiperazine and alloxazine alkaloids from the antarctic bacteria, Pseudorhodobacter psychrotolerans sp. nov. BIOCHEM SYST ECOL 2019. [DOI: 10.1016/j.bse.2019.04.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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13
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Ziesche L, Wolter L, Wang H, Brinkhoff T, Pohlner M, Engelen B, Wagner-Döbler I, Schulz S. An Unprecedented Medium-Chain Diunsaturated N-acylhomoserine Lactone from Marine Roseobacter Group Bacteria. Mar Drugs 2018; 17:md17010020. [PMID: 30602652 PMCID: PMC6356624 DOI: 10.3390/md17010020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 12/20/2018] [Accepted: 12/21/2018] [Indexed: 01/29/2023] Open
Abstract
N-acylhomoserine lactones (AHLs), bacterial signaling compounds involved in quorum-sensing, are a structurally diverse group of compounds. We describe here the identification, synthesis, occurrence and biological activity of a new AHL, N-((2E,5Z)-2,5-dodecadienoyl)homoserine lactone (11) and its isomer N-((3E,5Z)-3,5-dodecadienoyl)homoserine lactone (13), occurring in several Roseobacter group bacteria (Rhodobacteraceae). The analysis of 26 strains revealed the presence of 11 and 13 in six of them originating from the surface of the macroalgae Fucus spiralis or sediments from the North Sea. In addition, 18 other AHLs were detected in 12 strains. Compound identification was performed by GC/MS. Mass spectral analysis revealed a diunsaturated C12 homoserine lactone as structural element of the new AHL. Synthesis of three likely candidate compounds, 11, 13 and N-((2E,4E)-2,4-dodecadienoyl)homoserine lactone (5), revealed the former to be the natural AHLs. Bioactivity test with quorum-sensing reporter strains showed high activity of all three compounds. Therefore, the configuration and stereochemistry of the double bonds in the acyl chain seemed to be unimportant for the activity, although the chains have largely different shapes, solely the chain length determining activity. In combination with previous results with other Roseobacter group bacteria, we could show that there is wide variance between AHL composition within the strains. Furthermore, no association of certain AHLs with different habitats like macroalgal surfaces or sediment could be detected.
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Affiliation(s)
- Lisa Ziesche
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany.
| | - Laura Wolter
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111 Oldenburg, Germany.
| | - Hui Wang
- Helmholtz Centre for Infection Research, Department of Medical Microbiology, Group Microbial Communication, Inhoffenstr. 7, 38124 Braunschweig, Germany.
| | - Thorsten Brinkhoff
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111 Oldenburg, Germany.
| | - Marion Pohlner
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111 Oldenburg, Germany.
| | - Bert Engelen
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111 Oldenburg, Germany.
| | - Irene Wagner-Döbler
- Helmholtz Centre for Infection Research, Department of Medical Microbiology, Group Microbial Communication, Inhoffenstr. 7, 38124 Braunschweig, Germany.
| | - Stefan Schulz
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany.
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Bruns H, Ziesche L, Taniwal NK, Wolter L, Brinkhoff T, Herrmann J, Müller R, Schulz S. N-Acylated amino acid methyl esters from marine Roseobacter group bacteria. Beilstein J Org Chem 2018; 14:2964-2973. [PMID: 30591820 PMCID: PMC6296433 DOI: 10.3762/bjoc.14.276] [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: 09/13/2018] [Accepted: 11/15/2018] [Indexed: 01/13/2023] Open
Abstract
Bacteria of the Roseobacter group (Rhodobacteraceae) are important members of many marine ecosystems. Similar to other Gram-negative bacteria many roseobacters produce N-acylhomoserine lactones (AHLs) for communication by quorum sensing systems. AHLs regulate different traits like cell differentiation or antibiotic production. Related N-acylalanine methyl esters (NAMEs) have been reported as well, but so far only from Roseovarius tolerans EL-164. While screening various roseobacters isolated from macroalgae we encountered four strains, Roseovarius sp. D12_1.68, Loktanella sp. F13, F14 and D3 that produced new derivatives and analogs of NAMEs, namely N-acyl-2-aminobutyric acid methyl esters (NABME), N-acylglycine methyl esters (NAGME), N-acylvaline methyl esters (NAVME), as well as for the first time a methyl-branched NAME, N-(13-methyltetradecanoyl)alanine methyl ester. These compounds were detected by GC–MS analysis, and structural proposals were derived from the mass spectra and by derivatization. Verification of compound structures was performed by synthesis. NABMEs, NAVMEs and NAGMEs are produced in low amounts only, making mass spectrometry the method of choice for their detection. The analysis of both EI and ESI mass spectra revealed fragmentation patterns helpful for the detection of similar compounds derived from other amino acids. Some of these compounds showed antimicrobial activity. The structural similarity of N-acylated amino acid methyl esters and similar lipophilicity to AHLs might indicate a yet unknown function as signalling compounds in the ecology of these bacteria, although their singular occurrence is in strong contrast to the common occurrence of AHLs. Obviously the structural motif is not restricted to Roseovarius spp. and occurs also in other genera.
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Affiliation(s)
- Hilke Bruns
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Lisa Ziesche
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Nargis Khakin Taniwal
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
| | - Laura Wolter
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111 Oldenburg, Germany
| | - Thorsten Brinkhoff
- Institute for Chemistry and Biology of the Marine Environment, University of Oldenburg, Carl-von-Ossietzky-Straße 9-11, 26111 Oldenburg, Germany
| | - Jennifer Herrmann
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarland University, Campus E8.1, 66123 Saarbrücken, Germany
| | - Rolf Müller
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), Helmholtz Center for Infection Research (HZI), Saarland University, Campus E8.1, 66123 Saarbrücken, Germany
| | - Stefan Schulz
- Institute of Organic Chemistry, Technische Universität Braunschweig, Hagenring 30, 38106 Braunschweig, Germany
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