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Hazarika H, Gogoi P. Access to diverse organosulfur compounds via arynes: a comprehensive review on Kobayashi's aryne precursor. Org Biomol Chem 2021; 19:8466-8481. [PMID: 34568887 DOI: 10.1039/d1ob01436f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Arynes are highly reactive transient intermediates having enormous applications in organic synthesis. In the last three decades aryne chemistry has shown incredible developments in carbon-carbon and carbon-heteroatom bond formation reactions. After the discovery of Kobayashi's protocol for the generation of aryne intermediates in a mild way, this field of chemistry witnessed rapid growth in synthetic organic chemistry. One aspect of development in this field involves C-S bond formation under mild conditions which has a tremendous scope for the synthesis of various important organosulfur building blocks.
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Affiliation(s)
- Hemanta Hazarika
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, U.P. 201002, India
| | - Pranjal Gogoi
- Applied Organic Chemistry Group, Chemical Science and Technology Division, CSIR-North East Institute of Science and Technology, Jorhat 785006, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, U.P. 201002, India
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2
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Ren X, Tang S, Li L, Li J, Liang H, Li G, Yang G, Li H, Yuan B. Surfactant-Type Catalyst for Aerobic Oxidative Coupling of Hydrazine with Thiol in Water. J Org Chem 2019; 84:8683-8690. [PMID: 31244150 DOI: 10.1021/acs.joc.9b00451] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A series of PEG-functionalized nitrogen ligands were developed to conduct an aerobic oxidative cross-coupling reaction between alkyl- or aryl-hydrazines with thiols in water. This surfactant-type catalyst enables high efficiencies and selectivities, while tolerating a large variety of functional groups. The mother liquor is still catalytically active after five runs.
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Affiliation(s)
- Xuanhe Ren
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
| | - Shanyu Tang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
| | - Longjia Li
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
| | - Jiao Li
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
| | - Helong Liang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
| | - Ganzhong Li
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
| | - Guanyu Yang
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
| | - Heng Li
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
| | - Bingxin Yuan
- College of Chemistry and Molecular Engineering , Zhengzhou University , Henan 450001 , China
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3
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Huang X, Chen Y, Zhen S, Song L, Gao M, Zhang P, Li H, Yuan B, Yang G. Cobalt-Catalyzed Aerobic Cross-Dehydrogenative Coupling of C–H and Thiols in Water for C–S Formation. J Org Chem 2018; 83:7331-7340. [DOI: 10.1021/acs.joc.7b02718] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Xin Huang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yongqi Chen
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Shan Zhen
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Lijuan Song
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Mingqi Gao
- China Tobacco Henan Industry Co., Ltd., Zhengzhou, Henan 450001, China
| | - Panke Zhang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Heng Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Bingxin Yuan
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Guanyu Yang
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001, China
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4
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Thompson KJ, Simister RL, Hahn AS, Hallam SJ, Crowe SA. Nutrient Acquisition and the Metabolic Potential of Photoferrotrophic Chlorobi. Front Microbiol 2017; 8:1212. [PMID: 28729857 PMCID: PMC5498476 DOI: 10.3389/fmicb.2017.01212] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Accepted: 06/14/2017] [Indexed: 11/18/2022] Open
Abstract
Anoxygenic photosynthesis evolved prior to oxygenic photosynthesis and harnessed energy from sunlight to support biomass production on the early Earth. Models that consider the availability of electron donors predict that anoxygenic photosynthesis using Fe(II), known as photoferrotrophy, would have supported most global primary production before the proliferation of oxygenic phototrophs at approximately 2.3 billion years ago. These photoferrotrophs have also been implicated in the deposition of banded iron formations, the world's largest sedimentary iron ore deposits that formed mostly in late Archean and early Proterozoic Eons. In this work we present new data and analyses that illuminate the metabolic capacity of photoferrotrophy in the phylum Chlorobi. Our laboratory growth experiments and biochemical analyses demonstrate that photoferrotrophic Chlorobi are capable of assimilatory sulfate reduction and nitrogen fixation under sulfate and nitrogen limiting conditions, respectively. Furthermore, the evolutionary histories of key enzymes in both sulfur (CysH and CysD) and nitrogen fixation (NifDKH) pathways are convoluted; protein phylogenies, however, suggest that early Chlorobi could have had the capacity to assimilate sulfur and fix nitrogen. We argue, then, that the capacity for photoferrotrophic Chlorobi to acquire these key nutrients enabled them to support primary production and underpin global biogeochemical cycles in the Precambrian.
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Affiliation(s)
- Katharine J. Thompson
- Department of Microbiology and Immunology, University of British Columbia, VancouverBC, Canada
| | - Rachel L. Simister
- Department of Microbiology and Immunology, University of British Columbia, VancouverBC, Canada
| | - Aria S. Hahn
- Department of Microbiology and Immunology, University of British Columbia, VancouverBC, Canada
| | - Steven J. Hallam
- Department of Microbiology and Immunology, University of British Columbia, VancouverBC, Canada
| | - Sean A. Crowe
- Department of Microbiology and Immunology, University of British Columbia, VancouverBC, Canada
- Departments of Earth, Ocean and Atmospheric Sciences, University of British Columbia, VancouverBC, Canada
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5
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Francois CM, Duret L, Simon L, Mermillod-Blondin F, Malard F, Konecny-Dupré L, Planel R, Penel S, Douady CJ, Lefébure T. No Evidence That Nitrogen Limitation Influences the Elemental Composition of Isopod Transcriptomes and Proteomes. Mol Biol Evol 2016; 33:2605-20. [PMID: 27401232 DOI: 10.1093/molbev/msw131] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The field of stoichiogenomics aims at understanding the influence of nutrient limitations on the elemental composition of the genome, transcriptome, and proteome. The 20 amino acids and the 4 nt differ in the number of nutrients they contain, such as nitrogen (N). Thus, N limitation shall theoretically select for changes in the composition of proteins or RNAs through preferential use of N-poor amino acids or nucleotides, which will decrease the N-budget of an organism. While these N-saving mechanisms have been evidenced in microorganisms, they remain controversial in multicellular eukaryotes. In this study, we used 13 surface and subterranean isopod species pairs that face strongly contrasted N limitations, either in terms of quantity or quality. We combined in situ nutrient quantification and transcriptome sequencing to test if N limitation selected for N-savings through changes in the expression and composition of the transcriptome and proteome. No evidence of N-savings was found in the total N-budget of transcriptomes or proteomes or in the average protein N-cost. Nevertheless, subterranean species evolving in N-depleted habitats displayed lower N-usage at their third codon positions. To test if this convergent compositional change was driven by natural selection, we developed a method to detect the strand-asymmetric signature that stoichiogenomic selection should leave in the substitution pattern. No such signature was evidenced, indicating that the observed stoichiogenomic-like patterns were attributable to nonadaptive processes. The absence of stoichiogenomic signal despite strong N limitation within a powerful phylogenetic framework casts doubt on the existence of stoichiogenomic mechanisms in metazoans.
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Affiliation(s)
- Clémentine M Francois
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés UMR5023, Villeurbanne, France
| | - Laurent Duret
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, Villeurbanne, France
| | - Laurent Simon
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés UMR5023, Villeurbanne, France
| | - Florian Mermillod-Blondin
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés UMR5023, Villeurbanne, France
| | - Florian Malard
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés UMR5023, Villeurbanne, France
| | - Lara Konecny-Dupré
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés UMR5023, Villeurbanne, France
| | - Rémi Planel
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, Villeurbanne, France
| | - Simon Penel
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, Laboratoire de Biométrie et Biologie Evolutive UMR5558, Villeurbanne, France
| | - Christophe J Douady
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés UMR5023, Villeurbanne, France Institut Universitaire de France, Paris, France
| | - Tristan Lefébure
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, ENTPE, Laboratoire d'Ecologie des Hydrosystèmes Naturels et Anthropisés UMR5023, Villeurbanne, France
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Taylor CD, Doherty KW. Submersible Incubation Device (SID), autonomous instrumentation for the in situ measurement of primary production and other microbial rate processes. ACTA ACUST UNITED AC 1990. [DOI: 10.1016/0198-0149(90)90132-f] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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8
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Riemann B, Søndergaard M. Measurements of Diel Rates of Bacterial Secondary Production in Aquatic Environments. Appl Environ Microbiol 1984; 47:632-8. [PMID: 16346505 PMCID: PMC239739 DOI: 10.1128/aem.47.4.632-638.1984] [Citation(s) in RCA: 81] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Measurements of bacterial secondary production were carried out during 13 diel studies at one coastal marine station and in five lakes differing with respect to nutrient concentration and primary production. Bacterial secondary production was measured in situ every 3 to 5 h by [
3
H]thymidine incorporation into DNA. In some of the diel studies, these results were compared with results obtained from dark
14
CO
2
uptake and frequency of dividing cells. Only minor diel changes were observed. The rate of [
3
H]thymidine incorporation into DNA and the frequency of dividing cells varied from 23 to 194% of the diel mean. The dark CO
2
uptake rate varied from 12 to 259% of the diel mean. An analysis of variance demonstrated that no specific time periods during 24 h showed significantly different production rates, supporting the idea that bacterial activities in natural assemblages are controlled by a variety of events. The best correction (
r
2
= 0.74) was obtained between the [
3
H]thymidine incorporation and frequency of dividing cells procedures from the lake water samples. The actual production rates calculated by [
3
H]thymidine incorporation into DNA were appreciably lower than those obtained by the frequency of dividing cells and the dark CO
2
uptake techniques. Diel rates of bacterial production are discussed in relation to sampling frequency, statistical errors, and choice of method.
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Affiliation(s)
- B Riemann
- Freshwater Biological Laboratory, University of Copenhagen, Helsingørsgade 51, DK-3400 Hillerød, and Botanical Institute, University of Aarhus, Nordlandsvej 68, DK-8240 Risskov, Denmark
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10
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Cuhel RL, Taylor CD, Jannasch HW. Assimilatory sulfur metabolism in marine microorganisms: Sulfur metabolism, growth, and protein synthesis of Pseudomonas halodurans and Alteromonas luteo-violaceus during sulfate limitation. Arch Microbiol 1981. [DOI: 10.1007/bf00527063] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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