1
|
Panahi F, Khosravi H, Bauer F, Breit B. Asymmetric hydroalkylation of alkynes and allenes with imidazolidinone derivatives: α-alkenylation of α-amino acids. Chem Sci 2021; 12:7388-7392. [PMID: 34163828 PMCID: PMC8171337 DOI: 10.1039/d1sc00240f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 04/21/2021] [Indexed: 01/20/2023] Open
Abstract
This work reports a new method for the synthesis of quaternary α-alkenyl substituted amino acids by the enantio- and diastereoselective addition of imidazolidinone derivatives to alkynes and allenes. Further hydrolysis of the imidazolidinone products under acidic conditions afforded biologically relevant amino acid derivatives. This method is geometry-selective (E-isomer), enantio- and diastereoselective, and products were obtained in good to excellent yields. The utility of this new methodology is proved by its operational simplicity and the successful accomplishment of gram-scale reactions. Experimental and computational studies suggest the key role of Li in terms of selectivity and support the proposed reaction mechanism.
Collapse
Affiliation(s)
- Farhad Panahi
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg im Breisgau Germany
| | - Hormoz Khosravi
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg im Breisgau Germany
| | - Felix Bauer
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg im Breisgau Germany
| | - Bernhard Breit
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg Albertstraße 21 79104 Freiburg im Breisgau Germany
| |
Collapse
|
2
|
Abas H, Mas‐Roselló J, Amer MM, Durand DJ, Groleau RR, Fey N, Clayden J. Asymmetric and Geometry‐Selective α‐Alkenylation of α‐Amino Acids. Angew Chem Int Ed Engl 2019; 58:2418-2422. [DOI: 10.1002/anie.201813984] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Indexed: 11/11/2022]
Affiliation(s)
- Hossay Abas
- School of Chemistry Cantock's Close Bristol BS8 1TS UK
| | | | | | | | | | - Natalie Fey
- School of Chemistry Cantock's Close Bristol BS8 1TS UK
| | | |
Collapse
|
3
|
Abas H, Mas-Roselló J, Amer MM, Durand DJ, Groleau RR, Fey N, Clayden J. Asymmetric and Geometry-Selective α-Alkenylation of α-Amino Acids. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201813984] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hossay Abas
- School of Chemistry; Cantock's Close Bristol BS8 1TS UK
| | | | | | | | | | - Natalie Fey
- School of Chemistry; Cantock's Close Bristol BS8 1TS UK
| | | |
Collapse
|
4
|
Saati-Santamaría Z, López-Mondéjar R, Jiménez-Gómez A, Díez-Méndez A, Větrovský T, Igual JM, Velázquez E, Kolarik M, Rivas R, García-Fraile P. Discovery of Phloeophagus Beetles as a Source of Pseudomonas Strains That Produce Potentially New Bioactive Substances and Description of Pseudomonas bohemica sp. nov. Front Microbiol 2018; 9:913. [PMID: 29867824 PMCID: PMC5953339 DOI: 10.3389/fmicb.2018.00913] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Accepted: 04/20/2018] [Indexed: 12/21/2022] Open
Abstract
Antimicrobial resistance is a worldwide problem that threatens the effectiveness of treatments for microbial infection. Consequently, it is essential to study unexplored niches that can serve for the isolation of new microbial strains able to produce antimicrobial compounds to develop new drugs. Bark beetles live in phloem of host trees and establish symbioses with microorganisms that provide them with nutrients. In addition, some of their associated bacteria play a role in the beetle protection by producing substances that inhibit antagonists. In this study the capacity of several bacterial strains, isolated from the bark beetles Ips acuminatus, Pityophthorus pityographus Cryphalus piceae, and Pityogenes bidentatus, to produce antimicrobial compounds was analyzed. Several isolates exhibited the capacity to inhibit Gram-positive and Gram-negative bacteria, as well as fungi. The genome sequence analysis of three Pseudomonas isolates predicted the presence of several gene clusters implicated in the production of already described antimicrobials and moreover, the low similarity of some of these clusters with those previously described, suggests that they encode new undescribed substances, which may be useful for developing new antimicrobial agents. Moreover, these bacteria appear to have genetic machinery for producing antitumoral and antiviral substances. Finally, the strain IA19T showed to represent a new species of the genus Pseudomonas. The 16S rRNA gene sequence analysis showed that its most closely related species include Pseudomonas lutea, Pseudomonas graminis, Pseudomonas abietaniphila and Pseudomonas alkylphenolica, with 98.6, 98.5 98.4, and 98.4% identity, respectively. MLSA of the housekeeping genes gyrB, rpoB, and rpoD confirmed that strain IA19T clearly separates from its closest related species. Average nucleotide identity between strains IA19T and P. abietaniphila ATCC 700689T, P. graminis DSM 11363T, P. alkylphenolica KL28T and P. lutea DSM 17257T were 85.3, 80.2, 79.0, and 72.1%, respectively. Growth occurs at 4-37°C and pH 6.5-8. Optimal growth occurs at 28°C, pH 7-8 and up to 2.5% NaCl. Respiratory ubiquinones are Q9 (97%) and Q8 (3%). C16:0 and in summed feature 3 are the main fatty acids. Based on genotypic, phenotypic and chemotaxonomic characteristics, the description of Pseudomonas bohemica sp. nov. has been proposed. The type strain is IA19T (=CECT 9403T = LMG 30182T).
Collapse
Affiliation(s)
- Zaki Saati-Santamaría
- Microbiology and Genetics Department, University of Salamanca, Salamanca, Spain.,Spanish-Portuguese Institute for Agricultural Research (CIALE), Salamanca, Spain
| | | | - Alejandro Jiménez-Gómez
- Microbiology and Genetics Department, University of Salamanca, Salamanca, Spain.,Spanish-Portuguese Institute for Agricultural Research (CIALE), Salamanca, Spain
| | - Alexandra Díez-Méndez
- Microbiology and Genetics Department, University of Salamanca, Salamanca, Spain.,Spanish-Portuguese Institute for Agricultural Research (CIALE), Salamanca, Spain
| | - Tomáš Větrovský
- Institute of Microbiology of the Czech Academy of Sciences, Vestec, Czechia
| | - José M Igual
- Institute of Natural Resources and Agrobiology of Salamanca, IRNASA-CSIC, Salamanca, Spain.,Associated R&D Unit, USAL-CSIC (IRNASA), Salamanca, Spain
| | - Encarna Velázquez
- Microbiology and Genetics Department, University of Salamanca, Salamanca, Spain.,Spanish-Portuguese Institute for Agricultural Research (CIALE), Salamanca, Spain.,Associated R&D Unit, USAL-CSIC (IRNASA), Salamanca, Spain
| | - Miroslav Kolarik
- Institute of Microbiology of the Czech Academy of Sciences, Vestec, Czechia
| | - Raúl Rivas
- Microbiology and Genetics Department, University of Salamanca, Salamanca, Spain.,Spanish-Portuguese Institute for Agricultural Research (CIALE), Salamanca, Spain.,Associated R&D Unit, USAL-CSIC (IRNASA), Salamanca, Spain
| | - Paula García-Fraile
- Microbiology and Genetics Department, University of Salamanca, Salamanca, Spain.,Spanish-Portuguese Institute for Agricultural Research (CIALE), Salamanca, Spain.,Institute of Microbiology of the Czech Academy of Sciences, Vestec, Czechia
| |
Collapse
|
5
|
Mas-Roselló J, Hachisu S, Clayden J. Geometry-Retentive C-Alkenylation of Lithiated α-Aminonitriles: Quaternary α-Alkenyl Amino Acids and Hydantoins. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704908] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Josep Mas-Roselló
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Shuji Hachisu
- Syngenta Agrochemicals; Jealotts Hill Research Station Bracknell, Berks RG42 6EY UK
| | - Jonathan Clayden
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| |
Collapse
|
6
|
Mas-Roselló J, Hachisu S, Clayden J. Geometry-Retentive C-Alkenylation of Lithiated α-Aminonitriles: Quaternary α-Alkenyl Amino Acids and Hydantoins. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/anie.201704908] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Josep Mas-Roselló
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| | - Shuji Hachisu
- Syngenta Agrochemicals; Jealotts Hill Research Station Bracknell, Berks RG42 6EY UK
| | - Jonathan Clayden
- School of Chemistry; University of Bristol; Cantock's Close Bristol BS8 1TS UK
| |
Collapse
|
7
|
Wang Y, Li D, Huan X, Zhang L, Song H. Crystallization and preliminary X-ray crystallographic analysis of a putative nonribosomal peptide synthase AmbB from Pseudomonas aeruginosa. ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS 2014; 70:339-42. [PMID: 24598922 DOI: 10.1107/s2053230x14001782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Accepted: 01/24/2014] [Indexed: 11/10/2022]
Abstract
AmbB is a putative nonribosomal peptide synthase from Pseudomonas aeruginosa, which is involved in the production of IQS, a potent cell-cell communication signal molecule that integrates the quorum-sensing mechanism and stress response. It consists of 1249 amino acids and contains an AMP-binding domain, a phosphopantetheine-binding (PB) domain and a condensation (C) domain. In this report, a truncated form of AmbB that contains the PB domain and the condensation domain was overexpressed with an N-terminal GST tag in Escherichia coli and purified as a monomer using affinity and size-exclusion chromatography. The recombinant AmbBc (comprising residues 727-1249 of full-length AmbB) was crystallized using the hanging-drop vapour-diffusion method and a full data set was collected to 2.45 Å resolution using a synchrotron-radiation source. The crystals belonged to space group P6122 or P6522, with unit-cell parameters a = b = 87.81, c = 286.8 Å, α = 90, β = 90, γ = 120°, and contained one molecule per asymmetric unit.
Collapse
Affiliation(s)
- Yiwen Wang
- Life Sciences Institute, Zhejiang University, 388 Yuhangtang Road, Hangzhou, People's Republic of China
| | - Dewang Li
- Life Sciences Institute, Zhejiang University, 388 Yuhangtang Road, Hangzhou, People's Republic of China
| | - Xuelu Huan
- Institute of Molecular and Cell Biology, 61 Biopolis Drive, Singapore 138673, Singapore
| | - Lianhui Zhang
- Institute of Molecular and Cell Biology, 61 Biopolis Drive, Singapore 138673, Singapore
| | - Haiwei Song
- Life Sciences Institute, Zhejiang University, 388 Yuhangtang Road, Hangzhou, People's Republic of China
| |
Collapse
|
8
|
Lee X, Reimmann C, Greub G, Sufrin J, Croxatto A. The Pseudomonas aeruginosa toxin L-2-amino-4-methoxy-trans-3-butenoic acid inhibits growth and induces encystment in Acanthamoeba castellanii. Microbes Infect 2012; 14:268-72. [DOI: 10.1016/j.micinf.2011.10.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 08/18/2011] [Accepted: 10/17/2011] [Indexed: 11/29/2022]
|
9
|
Identification of the biosynthetic gene cluster for the Pseudomonas aeruginosa antimetabolite L-2-amino-4-methoxy-trans-3-butenoic acid. J Bacteriol 2010; 192:4251-5. [PMID: 20543073 DOI: 10.1128/jb.00492-10] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
L-2-amino-4-methoxy-trans-3-butenoic acid (AMB) is a potent antibiotic and toxin produced by Pseudomonas aeruginosa. Using a novel biochemical assay combined with site-directed mutagenesis in strain PAO1, we have identified a five-gene cluster specifying AMB biosynthesis, probably involving a thiotemplate mechanism. Overexpression of this cluster in strain PA7, a natural AMB-negative isolate, led to AMB overproduction.
Collapse
|
10
|
Kobayashi K, Irisawa S, Akamatsu H, Takahashi M, Kitamura T, Tanmatsu M, Morikawa O, Konishi H. A Convenient Synthesis of (E)-4-Alkoxy-2-amino-3-butenoic Acid Derivatives. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1999. [DOI: 10.1246/bcsj.72.2307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
11
|
Kobayashi K, Akamatsu H, Irisawa S, Takahashi M, Morikawa O, Konishi H. A New Synthesis of (E)-4-Alkoxy-2-formylamino-3-butenoic Acid Derivatives Utilizing 3-Alkoxy-1-isocyano-1-lithiopropenes. CHEM LETT 1997. [DOI: 10.1246/cl.1997.503] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
12
|
Alks V, Sufrin JR. Improved synthetic access to the β,γ-enol ether amino acids, L-2-amino-4-methoxy-trans-but-3-enoic acid and l-2-amino-4-methoxy--but-3-enoic acid. Tetrahedron Lett 1990. [DOI: 10.1016/s0040-4039(00)98044-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
13
|
Alks V, Sufrin JR. Improved Synthesis of the Biologically Active Methionine Analog, L-2-Amino-4-methoxy-cis-but-3-enoic Acid (L-cis-amb) Using an Electrophilic Glycinate Synthon. SYNTHETIC COMMUN 1989. [DOI: 10.1080/00397918908051040] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
14
|
Cornell NW, Zuurendonk PF, Kerich MJ, Straight CB. Selective inhibition of alanine aminotransferase and aspartate aminotransferase in rat hepatocytes. Biochem J 1984; 220:707-16. [PMID: 6466297 PMCID: PMC1153687 DOI: 10.1042/bj2200707] [Citation(s) in RCA: 55] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Experiments were conducted with intact rat hepatocytes to identify inhibitors and incubation conditions that cause selective inhibition of alanine aminotransferase or aspartate aminotransferase. Satisfactory results were obtained by preincubating cells with L-cycloserine or L-2-amino-4-methoxy-trans-but-3-enoic acid in the absence of added substrates. When cells were incubated for 20 min with 50 microM-L-cycloserine, alanine aminotransferase activity was decreased by 90%, whereas aspartate aminotransferase was inhibited by 10% or less. On subsequent incubation, synthesis of glucose and urea from alanine was strongly inhibited, but glucose synthesis from lactate was unaffected. L-2-Amino-4-methoxy-trans-but-3-enoic acid (400 microM) in hepatocyte incubations caused 90-95% inactivation of aspartate aminotransferase, but only 15-30% loss of alanine aminotransferase activity. After preincubation with the inhibitor, glucose synthesis from lactate was almost completely blocked; with alanine as the substrate, gluconeogenesis was unaffected, and urea synthesis was only slightly decreased. By comparison with preincubation with inhibitors, simultaneous addition of substrates (alanine; lactate plus lysine) and inhibitors (cycloserine; aminomethoxybutenoic acid) resulted in smaller decreases in aminotransferase activities and in metabolic rates. Other compounds were less satisfactory as selective inhibitors. Ethylhydrazinoacetate inactivated the two aminotransferases to similar extents. Vinylglycine was almost equally effective in blocking the two enzymes in vitro, but was a very weak inhibitor when used with intact cells. Concentrations of DL-propargylglycine (4 mM) required to cause at least 90% inhibition of alanine aminotransferase in hepatocytes also caused a 16% decrease in aspartate aminotransferase. When tested in vitro, alanine aminotransferase was, as previously reported by others, more sensitive to inhibition by amino-oxyacetate than was aspartate aminotransferase, but in liver cell incubations the latter enzyme was more rapidly inactivated by amino-oxyacetate.
Collapse
|
15
|
Cooper AJ, Fitzpatrick SM, Ginos JZ, Kaufman C, Dowd P. Inhibition of glutamate-aspartate transaminase by beta-methylene-DL-aspartate. Biochem Pharmacol 1983; 32:679-89. [PMID: 6830631 DOI: 10.1016/0006-2952(83)90493-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
beta-Methylene-DL-aspartate, a new beta, gamma-unsaturated amino acid, is an irreversible inhibitor of soluble pig heart glutamate-aspartate transaminase (Ki approximately 3 mM with respect to the L-form; limiting rate constant for inactivation approximately 0.4 min-1). The new amino acid is the most specific inhibitor of glutamate-aspartate transaminase thus far studied. It does not inactivate pig heart glutamate-alanine transaminase, soluble rat kidney glutamine transaminase K, gamma-aminobutyrate transaminase (from Pseudomonas fluorescens), glutamate decarboxylase (Escherichia coli), snake venom L-amino acid oxidase, or hog kidney D-amino acid oxidase. In addition, the following enzymes were not inhibited by beta-methylene-DL-aspartate in rat tissue homogenates: gamma-aminobutyrate transaminase (brain), tyrosine transaminase (liver), glutamine transaminase L (liver), asparagine, transaminase (liver), ornithine transaminase (liver) or branch-chain transaminase(s) (kidney). Intraperitoneal injection of beta-methylene-DL-aspartate into mice decreased kidney and liver glutamate-aspartate transaminase activities but had no effect on liver glutamate-alanine transaminase activity.
Collapse
|
16
|
Sufrin JR, Lombardini JB, Keith DD. L-2-Amino-4-methoxy-cis-but-3-enoic acid, a potent inhibitor of the enzymatic synthesis of S-adenosylmethionine. Biochem Biophys Res Commun 1982; 106:251-5. [PMID: 7103990 DOI: 10.1016/0006-291x(82)91102-0] [Citation(s) in RCA: 33] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
|
17
|
Tisdale MJ. The effect of L-2-amino-4-methoxy-trans-3-butenoic acid on serine hydroxymethyl transferase. Chem Biol Interact 1981; 34:75-83. [PMID: 7460079 DOI: 10.1016/0009-2797(81)90092-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
The tumour growth inhibitor L-2-amino-4-methoxy-trans-3-butenoic acid (Ro07-7957) inhibits serine hydroxymethyltransferase in cytosolic extracts of Walker carcinoma non-competitively with respect to L-serine with an apparent inhibition constant similar to the Km-value for L-serine. The kinetics of inactivation suggest that it reacts as an irreversible substrate analogue. Incubation of Walker cells with Ro07-7957 causes an increase in serine hydroxymethyltransferase activity which is most pronounced at concentrations less than or equal to LD50. This increase in enzyme activity does not occur in the presence of cycloheximide. These results suggest that inhibition of serine hydroxymethyltransferase in intact cells is accompanied by an increase in enzyme biosynthesis and that the growth inhibitory property or Ro07-7957 does not involve interference with the conversion of serine to glycine.
Collapse
|