1
|
Paroi B, Pegu C, Mane MV, Patil NT. Gold-Catalyzed Arylative Cope Rearrangement. Angew Chem Int Ed Engl 2024; 63:e202406936. [PMID: 38769939 DOI: 10.1002/anie.202406936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2024] [Revised: 05/14/2024] [Accepted: 05/20/2024] [Indexed: 05/22/2024]
Abstract
Cope rearrangements have garnered significant attention owing to their ability to undergo structural reorganization in stereoselective manner. While substantial advances have been achieved over decades, these rearrangements remained applicable exclusively to parent 1,5-hexadienes. Herein, we disclose the gold-catalyzed arylative Cope rearrangement of 1,6-heptadienes via a cyclization-induced [3,3]-rearrangement employing ligand-enabled gold redox catalysis. Detailed mechanistic investigations including several control experiments, cross-over experiment, HRMS analysis, 31P NMR and DFT studies have been performed to underpin the mechanism.
Collapse
Affiliation(s)
- Bidisha Paroi
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-, 462 066, India
| | - Chayanika Pegu
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-, 462 066, India
| | - Manoj V Mane
- Centre for Nano and Material Science, Jain (Deemed-to-be University), Jain Global Campus Kanakapura, Bangalore, Karnataka-, 562112, India
| | - Nitin T Patil
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal-, 462 066, India
| |
Collapse
|
2
|
Martinaux P, Laher R, Marin C, Michelet V. Transition Metal‐Catalyzed Rearrangement and Cycloisomerization Reactions Toward Hedonic Materials. Isr J Chem 2022. [DOI: 10.1002/ijch.202200047] [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)
- Philippe Martinaux
- Université Côte d'Azur Institut de Chimie de Nice UMR 7272 CNRS Parc Valrose, Faculté des Sciences 06100 Nice France
| | - Romain Laher
- Université Côte d'Azur Institut de Chimie de Nice UMR 7272 CNRS Parc Valrose, Faculté des Sciences 06100 Nice France
| | | | - Véronique Michelet
- Université Côte d'Azur Institut de Chimie de Nice UMR 7272 CNRS Parc Valrose, Faculté des Sciences 06100 Nice France
| |
Collapse
|
3
|
Nowrouzi B, Lungang L, Rios-Solis L. Exploring optimal Taxol® CYP725A4 activity in Saccharomyces cerevisiae. Microb Cell Fact 2022; 21:197. [PMID: 36123694 PMCID: PMC9484169 DOI: 10.1186/s12934-022-01922-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 09/12/2022] [Indexed: 11/23/2022] Open
Abstract
Background CYP725A4 catalyses the conversion of the first Taxol® precursor, taxadiene, to taxadiene-5α-ol (T5α-ol) and a range of other mono- and di-hydroxylated side products (oxygenated taxanes). Initially known to undergo a radical rebound mechanism, the recent studies have revealed that an intermediate epoxide mediates the formation of the main characterised products of the enzyme, being T5α-ol, 5(12)-oxa-3(11)-cyclotaxane (OCT) and its isomer, 5(11)-oxa-3(11)-cyclotaxane (iso-OCT) as well as taxadienediols. Besides the high side product: main product ratio and the low main product titre, CYP725A4 is also known for its slow enzymatic activity, massively hindering further progress in heterologous production of Taxol® precursors. Therefore, this study aimed to systematically explore the key parameters for improving the regioselectivity and activity of eukaryotic CYP725A4 enzyme in a whole-cell eukaryotic biocatalyst, Saccharomyces cerevisiae. Results Investigating the impact of CYP725A4 and reductase gene dosages along with construction of self-sufficient proteins with strong prokaryotic reductases showed that a potential uncoupling event accelerates the formation of oxygenated taxane products of this enzyme, particularly the side products OCT and iso-OCT. Due to the harmful effect of uncoupling products and the reactive metabolites on the enzyme, the impact of flavins and irons, existing as prosthetic groups in CYP725A4 and reductase, were examined in both their precursor and ready forms, and to investigate the changes in product distribution. We observed that the flavin adenine dinucleotide improved the diterpenoids titres and biomass accumulation. Hemin was found to decrease the titre of iso-OCT and T5α-ol, without impacting the side product OCT, suggesting the latter being the major product of CYP725A4. The interaction between this iron and the iron precursor, δ-Aminolevulinic acid, seemed to improve the production of these diterpenoids, further denoting that iso-OCT and T5α-ol were the later products. While no direct correlation between cellular-level oxidative stress and oxygenated taxanes was observed, investigating the impact of salt and antioxidant on CYP725A4 further showed the significant drop in OCT titre, highlighting the possibility of enzymatic-level uncoupling event and reactivity as the major mechanism behind the enzyme activity. To characterise the product spectrum and production capacity of CYP725A4 in the absence of cell growth, resting cell assays with optimal neutral pH revealed an array of novel diterpenoids along with higher quantities of characterised diterpenoids and independence of the oxygenated product spectra from the acidity effect. Besides reporting on the full product ranges of CYP725A4 in yeast for the first time, the highest total taxanes of around 361.4 ± 52.4 mg/L including 38.1 ± 8.4 mg/L of T5α-ol was produced herein at a small, 10-mL scale by resting cell assay, where the formation of some novel diterpenoids relied on the prior existence of other diterpenes/diterpenoids as shown by statistical analyses. Conclusions This study shows how rational strain engineering combined with an efficient design of experiment approach systematically uncovered the promoting effect of uncoupling for optimising the formation of the early oxygenated taxane precursors of Taxol®. The provided strategies can effectively accelerate the design of more efficient Taxol®-producing yeast strains. Supplementary Information The online version contains supplementary material available at 10.1186/s12934-022-01922-1.
Collapse
Affiliation(s)
- Behnaz Nowrouzi
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, Edinburgh, EH9 3BF, UK.,Centre for Synthetic and Systems Biology (SynthSys), The University of Edinburgh, Edinburgh, EH9 3BD, UK
| | - Liang Lungang
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, Edinburgh, EH9 3BF, UK.,Centre for Synthetic and Systems Biology (SynthSys), The University of Edinburgh, Edinburgh, EH9 3BD, UK
| | - Leonardo Rios-Solis
- Institute for Bioengineering, School of Engineering, The University of Edinburgh, Edinburgh, EH9 3BF, UK. .,Centre for Synthetic and Systems Biology (SynthSys), The University of Edinburgh, Edinburgh, EH9 3BD, UK. .,School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK.
| |
Collapse
|
4
|
Burevschi E, Sanz ME. Seven Conformations of the Macrocycle Cyclododecanone Unveiled by Microwave Spectroscopy. Molecules 2021; 26:molecules26175162. [PMID: 34500596 PMCID: PMC8433831 DOI: 10.3390/molecules26175162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/15/2021] [Accepted: 08/21/2021] [Indexed: 11/16/2022] Open
Abstract
The physicochemical properties and reactivity of macrocycles are critically shaped by their conformations. In this work, we have identified seven conformations of the macrocyclic ketone cyclododecanone using chirped-pulse Fourier transform microwave spectroscopy in combination with ab initio and density functional theory calculations. Cyclododecanone is strongly biased towards adopting a square configuration of the heavy atom framework featuring three C-C bonds per side. The substitution and effective structures of this conformation have been determined through the observation of its 13C isotopologues. The minimisation of transannular interactions and, to a lesser extent, HCCH eclipsed configurations drive conformational preferences. Our results contribute to a better understanding of the intrinsic forces mediating structural choices in macrocycles.
Collapse
|
5
|
|
6
|
Gambacorta G, Sharley JS, Baxendale IR. A comprehensive review of flow chemistry techniques tailored to the flavours and fragrances industries. Beilstein J Org Chem 2021; 17:1181-1312. [PMID: 34136010 PMCID: PMC8182698 DOI: 10.3762/bjoc.17.90] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 04/22/2021] [Indexed: 12/28/2022] Open
Abstract
Due to their intrinsic physical properties, which includes being able to perform as volatile liquids at room and biological temperatures, fragrance ingredients/intermediates make ideal candidates for continuous-flow manufacturing. This review highlights the potential crossover between a multibillion dollar industry and the flourishing sub-field of flow chemistry evolving within the discipline of organic synthesis. This is illustrated through selected examples of industrially important transformations specific to the fragrances and flavours industry and by highlighting the advantages of conducting these transformations by using a flow approach. This review is designed to be a compendium of techniques and apparatus already published in the chemical and engineering literature which would constitute a known solution or inspiration for commonly encountered procedures in the manufacture of fragrance and flavour chemicals.
Collapse
Affiliation(s)
- Guido Gambacorta
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
| | - James S Sharley
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
| | - Ian R Baxendale
- Department of Chemistry, University of Durham, Stockton Road, Durham, DH1 3LE, United Kingdom
| |
Collapse
|
7
|
Sharma N, Bansal RK. Effect of formal CH/P exchange on tandem Cope rearrangement and [2 + 2] cycloaddition of cis-1,2-diethylnylcyclopropane and its mono-hetero analogues. PHOSPHORUS SULFUR 2020. [DOI: 10.1080/10426507.2020.1737064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
| | - R. K. Bansal
- Department of Chemistry, The IIS University, Jaipur, India
| |
Collapse
|
8
|
Heerdegen D, Junker J, Dittrich S, Mayer P, Bracher F. Traceless Isoprenylation of Aldehydes via
N
‐Boc‐
N
‐(1,1‐dimethylallyl)hydrazones. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000382] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Desirée Heerdegen
- Department of Pharmacy ‐ Center for Drug Research Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
| | - Julia Junker
- Department of Pharmacy ‐ Center for Drug Research Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
| | - Sebastian Dittrich
- Department of Pharmacy ‐ Center for Drug Research Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
| | - Peter Mayer
- Department of Chemistry Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
| | - Franz Bracher
- Department of Pharmacy ‐ Center for Drug Research Ludwig‐Maximilians University Butenandtstr. 5‐13 81377 Munich Germany
| |
Collapse
|
9
|
Unexpected Rearrangement of N-Allyl-2-phenyl-4,5-Dihydrooxazole-4-Carboxamides to Construct Aza-Quaternary Carbon Centers. Molecules 2019; 24:molecules24244495. [PMID: 31817984 PMCID: PMC6943665 DOI: 10.3390/molecules24244495] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 12/01/2019] [Accepted: 12/06/2019] [Indexed: 11/21/2022] Open
Abstract
The unexpected rearrangement of N-allyl-2-phenyl-4,5-dihydrooxazole-4-carboxamides in the presence of LiHMDS has been found. The key features are: (1) the net reaction consisted of 1,3-migration of the N-allyl group, (2) the rearrangement produced a congested aza-quaternary carbon center, (3) both cyclic and acyclic substrates underwent the unexpected rearrangement to afford products in moderate to high yields, and (4) the reaction seemed to be highly stereoselective. In addition, a plausible mechanism has been discussed.
Collapse
|
10
|
|
11
|
Pandey G, Khamrai J, Mishra A, Maity P, Chikkade PK. Iminium ion-enamine cascade reaction enables the asymmetric total syntheses of aspidosperma alkaloids vincadifformine and ervinceine. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.08.025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
12
|
Pandey G, Mishra A, Khamrai J. Generation of all carbon quaternary stereocenters at the C-3 carbon of piperidinones and pyrrolidinones and its application in natural product total synthesis. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
|
13
|
A one-pot access to pyridine/benzo fused cyclododecanes via multi-component tandem reactions. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
14
|
Kumar KS, Ramulu MS, Kumar NP. Unexpected C–N bond formation via Smiles rearrangement: one pot synthesis of N-arylated coumarin/pyran derivatives. NEW J CHEM 2018. [DOI: 10.1039/c8nj02109k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A conceptually new and one-pot method for the synthesis of N-arylated coumarin/pyran derivatives via Smiles rearrangement.
Collapse
Affiliation(s)
- K. Shiva Kumar
- Department of Chemistry
- Osmania University
- Hyderabad-500 007
- India
| | | | | |
Collapse
|
15
|
Kour M, Gupta R, Bansal R. Tandem Cope-rearrangement and [2 + 2] cycloaddition of cis-1,2-diethynylcyclopropane and its mono-hetero analogues: A DFT investigation. COMPUT THEOR CHEM 2018. [DOI: 10.1016/j.comptc.2017.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
16
|
Pandey G, Khamrai J, Mishra A. Generation of All-Carbon Quaternary Stereocenters at the C-3 Carbon of Lactams via [3,3]-Sigmatropic Rearrangement and Revision of Absolute Configuration: Total Synthesis of (−)-Physostigmine. Org Lett 2017; 20:166-169. [DOI: 10.1021/acs.orglett.7b03537] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Ganesh Pandey
- Molecular Synthesis and Drug
Discovery Laboratory, Centre of Biomedical Research, SGPGIMS Campus, Lucknow 226014, India
| | - Jagadish Khamrai
- Molecular Synthesis and Drug
Discovery Laboratory, Centre of Biomedical Research, SGPGIMS Campus, Lucknow 226014, India
| | - Akash Mishra
- Molecular Synthesis and Drug
Discovery Laboratory, Centre of Biomedical Research, SGPGIMS Campus, Lucknow 226014, India
| |
Collapse
|
17
|
Liu J, Zou Y, Zhou L, Chai A, Wang C, Dang HS, Wang Q, Goeke A. A Practical Domino-Claisen-CopeSequence in the Synthesis of New Blooming Citrus and Potent Floral Rose Alcohols. Helv Chim Acta 2017. [DOI: 10.1002/hlca.201700200] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jie Liu
- Department of Chemistry; Fudan University; 220 Handan Road Shanghai 200433 P. R. China
- Fragrance Ingredients Research; Givaudan Fragrances (Shanghai) Ltd.; 298 Li Shi Zhen Road Shanghai 201203 P. R. China
| | - Yue Zou
- Fragrance Ingredients Research; Givaudan Fragrances (Shanghai) Ltd.; 298 Li Shi Zhen Road Shanghai 201203 P. R. China
| | - Lijun Zhou
- Fragrance Ingredients Research; Givaudan Fragrances (Shanghai) Ltd.; 298 Li Shi Zhen Road Shanghai 201203 P. R. China
| | - An Chai
- Fragrance Ingredients Research; Givaudan Fragrances (Shanghai) Ltd.; 298 Li Shi Zhen Road Shanghai 201203 P. R. China
| | - Chao Wang
- Fragrance Ingredients Research; Givaudan Fragrances (Shanghai) Ltd.; 298 Li Shi Zhen Road Shanghai 201203 P. R. China
| | - Hai-Shan Dang
- Fragrance Ingredients Research; Givaudan Fragrances (Shanghai) Ltd.; 298 Li Shi Zhen Road Shanghai 201203 P. R. China
| | - Quanrui Wang
- Department of Chemistry; Fudan University; 220 Handan Road Shanghai 200433 P. R. China
| | - Andreas Goeke
- Fragrance Ingredients Research; Givaudan Schweiz AG; Überlandstrasse 138 8600 Dübendorf Switzerland
| |
Collapse
|
18
|
Vandewiele NM, Van De Vijver R, Carstensen HH, Van Geem KM, Reyniers MF, Marin GB. Implementation of Stereochemistry in Automatic Kinetic Model Generation. INT J CHEM KINET 2016. [DOI: 10.1002/kin.21030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
19
|
Arkan F, Izadyar M. Quantum chemical aspects of solvent effects on the Diels–Alder reaction of 2,3-dimethyl-1,3-butadiene and diethyl azodicarboxylate. PROGRESS IN REACTION KINETICS AND MECHANISM 2016. [DOI: 10.3184/146867816x14702227410256] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A comprehensive theoretical study was performed regarding the solvent effect on the Diels–Alder reaction of 2,3-dimethyl-1,3-butadiene and the hetero-dienophile, diethyl azodicarboxylate. Reaction rates in the various solutions were studied using SCRF–DFT theory and good agreement with the experimental results was obtained. According to natural bond orbital analysis, it was confirmed that the stabilisation energy of the C–N bonds contributes to the strong interaction between the solvents and transition state (TS) structures. Topological analyses showed a linear correlation between the interaction energy and the sum of electron density at the bond critical point of C–N at the TS. Moreover, with an increase in the overall electron density of the C–N bond critical point, the vibrational frequencies were decreased. Finally, some correlations between the quantum reactivity indices and the rate constants in the presence of 23 solvents were investigated.
Collapse
Affiliation(s)
- Foroogh Arkan
- Department of Chemistry, Ferdowsi University of Mashhad, International Campus, Mashhad, Iran
| | - Mohammad Izadyar
- Department of Chemistry, Faculty of Sciences, Ferdowsi University of Mashhad, Mashhad, Iran
| |
Collapse
|
20
|
Chen ZS, Huang LZ, Jeon HJ, Xuan Z, Lee SG. Cooperative Pd(0)/Rh(II) Dual Catalysis: Interceptive Capturing of π-Allyl Pd(II) Complexes with α-Imino Rh(II) Carbenoids. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01110] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zi-Sheng Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, People’s Republic of China
- Department
of Chemistry and Nano Science (BK21 Plus), Ewha Womans University, 120-750 Seoul, Korea
| | - Liang-Zhu Huang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Science, Northwest A&F University, Yangling 712100, People’s Republic of China
- Department
of Chemistry and Nano Science (BK21 Plus), Ewha Womans University, 120-750 Seoul, Korea
| | - Hyun Ji Jeon
- Department
of Chemistry and Nano Science (BK21 Plus), Ewha Womans University, 120-750 Seoul, Korea
| | - Zi Xuan
- Department
of Chemistry and Nano Science (BK21 Plus), Ewha Womans University, 120-750 Seoul, Korea
| | - Sang-gi Lee
- Department
of Chemistry and Nano Science (BK21 Plus), Ewha Womans University, 120-750 Seoul, Korea
| |
Collapse
|
21
|
Feasible Approach to Tricyclic and Tetracyclic cyclododecanone. J Heterocycl Chem 2015. [DOI: 10.1002/jhet.2062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
22
|
Dittrich S, Bracher F. Triflimide-Catalysed Rearrangement of N-(1-Trimethylsilyl)allylhydrazones Results in the Formation of Vinylsilanes and Cyclopropanes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501180] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
23
|
Wang P, Li J, Yu CL, Xiao X, Wu PY, Zeng BB. Concise synthesis of (+)-subersic acid from (−)-Sclareol. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.04.100] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
24
|
Petta T, Moraes LAB, Faccioli LH. Versatility of tandem mass spectrometry for focused analysis of oxylipids. JOURNAL OF MASS SPECTROMETRY : JMS 2015; 50:879-890. [PMID: 26349642 DOI: 10.1002/jms.3595] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2014] [Revised: 03/12/2015] [Accepted: 03/13/2015] [Indexed: 06/05/2023]
Abstract
Liquid chromatography-tandem mass spectrometry (LC-MS/MS) in the multiple reaction monitoring (MRM) scan mode has been the primary MS method applied for the target identification of specific and minor oxylipids in complex matrices, such as eicosanoids and docosanoids, which are potent lipid mediators derived from polyunsaturated fatty acid oxygenation. However, the high specificity of MRM can limit the detection of species with m/z MRM transitions not covered by the method. In addition to MRM, tandem-quadrupole mass analyzers enable other experiments to be conducted, by fragmenting ions via collision-induced dissociation process (CID). This paper presents the potential of tandem mass spectrometry for the focused analysis of oxylipids. We have successfully developed an LC-MS/MS method for the identification of precursor ions of m/z 115, a diagnostic product ion of 5-hydroxy- and 5-epoxy-fatty acids. As a proof of concept, the developed method was used to discover several oxylipids oxidized at C5 derived from arachidonic acid (C20 : 4) oxygenation in a hypothalamus rat extract that were not identified using the target MRM methodology. The proposed focused MS/MS-based approach in a tandem mass analyzer has proven to be a powerful strategy to accelerate the identification of oxylipids with structural similarities and assist the field of lipidomic research.
Collapse
Affiliation(s)
- Tania Petta
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, Ribeirão Preto, SP, CEP 14040-903, Brazil
| | - Luiz A B Moraes
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Avenida Bandeirantes 3900, Bairro Monte Alegre, Ribeirão Preto, SP, CEP 14040-901, Brazil
| | - Lúcia H Faccioli
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Avenida do Café s/n, Ribeirão Preto, SP, CEP 14040-903, Brazil
| |
Collapse
|
25
|
Zou Y, Zhou L, Ding C, Wang Q, Kraft P, Goeke A. A novel oxy-oxonia(azonia)-cope reaction: serendipitous discovery and its application to the synthesis of macrocyclic musks. Chem Biodivers 2015; 11:1608-28. [PMID: 25329787 DOI: 10.1002/cbdv.201400058] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Indexed: 11/11/2022]
Abstract
This brief review, including new experimental results, is the summary of a talk at the GDCh conference 'flavors & fragrances 2013' in Leipzig, Germany, 11th-13th September, 2013. Musk odorants are indispensable in perfumery to lend sensuality to fine fragrances, a nourishing effect to cosmetics, and a comforting feeling to laundry. We have recently found serendipitously a new oxy-oxonia-Cope rearrangement. In this account, we review the background of oxonia-sigmatropic rearrangements and the discovery of this novel reaction. Special attention is focused on the versatile lactone and lactam formation reactions via [n+4] ring enlargement and the macrocyclization in the synthesis of new macrocyclic musks. The synthesized structures provide new insights into the structure-odor relationships of musks.
Collapse
Affiliation(s)
- Yue Zou
- Givaudan Fragrances (Shanghai) Ltd., Li Shi Zhen Road 298, Shanghai 201203, P. R. China.
| | | | | | | | | | | |
Collapse
|
26
|
Traceless bond construction via rearrangement of N-Boc-N-allylhydrazones giving 1,1-disubstituted olefins. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.021] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
27
|
Pandey G, Khamrai J, Mishra A. An Expeditious Route to Both Enantiomers of All Carbon Quaternary Stereocenters at C-3 Carbon of Lactams via [3,3]-Sigmatropic Rearrangement: Total Synthesis of (−)-Physostigmine. Org Lett 2015; 17:952-5. [DOI: 10.1021/ol503766y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ganesh Pandey
- Molecular Synthesis and Drug
Discovery Laboratory, Centre of Biomedical Research, SGPGIMS Campus, Lucknow-226014, India
| | - Jagadish Khamrai
- Molecular Synthesis and Drug
Discovery Laboratory, Centre of Biomedical Research, SGPGIMS Campus, Lucknow-226014, India
| | - Akash Mishra
- Molecular Synthesis and Drug
Discovery Laboratory, Centre of Biomedical Research, SGPGIMS Campus, Lucknow-226014, India
| |
Collapse
|
28
|
|
29
|
Trofimov BA, Schmidt EY. Reactions of acetylenes in superbasic media. Recent advances. RUSSIAN CHEMICAL REVIEWS 2014. [DOI: 10.1070/rc2014v083n07abeh004425] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
30
|
Getlik M, Wilson BJ, Morshed MM, Watson IDG, Tang D, Subramanian P, Al-awar R. Rearrangement of 4-Amino-3-halo-pyridines by Nucleophilic Aromatic Substitution. J Org Chem 2013; 78:5705-10. [DOI: 10.1021/jo4003773] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthäus Getlik
- Drug Discovery Program, Ontario Institute for Cancer Research, 101 College
Street, MaRS Centre, South Tower, Toronto, ON M5G 0A3, Canada
| | - Brian J. Wilson
- Drug Discovery Program, Ontario Institute for Cancer Research, 101 College
Street, MaRS Centre, South Tower, Toronto, ON M5G 0A3, Canada
| | - M. Monzur Morshed
- Drug Discovery Program, Ontario Institute for Cancer Research, 101 College
Street, MaRS Centre, South Tower, Toronto, ON M5G 0A3, Canada
| | - Iain D. G. Watson
- Drug Discovery Program, Ontario Institute for Cancer Research, 101 College
Street, MaRS Centre, South Tower, Toronto, ON M5G 0A3, Canada
| | - Doris Tang
- Drug Discovery Program, Ontario Institute for Cancer Research, 101 College
Street, MaRS Centre, South Tower, Toronto, ON M5G 0A3, Canada
| | - Pandiaraju Subramanian
- Drug Discovery Program, Ontario Institute for Cancer Research, 101 College
Street, MaRS Centre, South Tower, Toronto, ON M5G 0A3, Canada
| | - Rima Al-awar
- Drug Discovery Program, Ontario Institute for Cancer Research, 101 College
Street, MaRS Centre, South Tower, Toronto, ON M5G 0A3, Canada
- Department of Pharmacology and
Toxicology, University of Toronto, Medical
Sciences Building, 1 King’s College Circle, Toronto, ON M5S
1A8, Canada
| |
Collapse
|
31
|
Shmidt EY, Bidusenko IA, Protsuk NI, Mikhaleva AI, Trofimov BA. Improved synthesis of tertiary propargyl alcohols by the Favorskii reaction of alkyl aryl (hetaryl) ketones with acetylene. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2013. [DOI: 10.1134/s1070428013010028] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
32
|
A gold-catalysed enantioselective Cope rearrangement of achiral 1,5-dienes. Nat Chem 2012; 4:405-9. [PMID: 22522261 DOI: 10.1038/nchem.1327] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2012] [Accepted: 03/08/2012] [Indexed: 12/25/2022]
Abstract
Since the discovery of the Cope rearrangement in the 1940s, no asymmetric variant of the rearrangement of achiral 1,5-dienes has emerged, despite the successes that have been achieved with its heteroatom variants (Claisen, aza-Cope, and so on). This article reports the first example of an enantioselective Cope reaction that starts from an achiral diene. The new gold(I) catalyst derived from double Cl(-)-abstraction of ((S)-3,5-xylyl-PHANEPHOS(AuCl)(2)), has been developed for the sigmatropic rearrangement of alkenyl-methylenecyclopropanes. The reaction proceeds at low temperature and the synthetically useful vinylcyclopropane products are obtained in high yield and enantioselectivity. Density functional theory calculations predict that: (1) the reaction proceeds via a cyclic carbenium ion intermediate, (2) the relief of strain in the methylenecyclopropane moiety provides the thermodynamic driving force for the rearrangement and (3) metal complexation of the transition-state structure lowers the rearrangement barriers.
Collapse
|
33
|
Trofimov BA, Schmidt EY, Bidusenko IA, Ushakov IA, Protsuk NI, Zorina NV, Mikhaleva AI. A peculiar transition-metal-free cyclodimerization of propargylic alcohols to vinyl bicyclic ketals. Tetrahedron 2012. [DOI: 10.1016/j.tet.2011.11.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
34
|
Graulich N. The Cope rearrangement—the first born of a great family. WILEY INTERDISCIPLINARY REVIEWS-COMPUTATIONAL MOLECULAR SCIENCE 2011. [DOI: 10.1002/wcms.17] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nicole Graulich
- Justus‐Liebig University Giessen, Institute of Organic Chemistry, Giessen, Hessen, Germany
| |
Collapse
|
35
|
Zhang W, Tang WL, Wang Z, Li Z. Regio- and Stereoselective Biohydroxylations with a Recombinant Escherichia coli Expressing P450pyr Monooxygenase of Sphingomonas Sp. HXN-200. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000266] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
36
|
Lagiakos HR, Aguilar MI, Perlmutter P. A Mild Method for the Efficient [3,3]-Sigmatropic Rearrangement of N,O-Diacylhydroxylamines. J Org Chem 2009; 74:8001-3. [DOI: 10.1021/jo901717a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Helen Rachel Lagiakos
- Monash University, Clayton, Victoria, 3800, Australia, and Department of Biochemistry & Molecular Biology, Monash University, Clayton, Victoria, 3800, Australia
| | - Marie-Isabel Aguilar
- Monash University, Clayton, Victoria, 3800, Australia, and Department of Biochemistry & Molecular Biology, Monash University, Clayton, Victoria, 3800, Australia
| | - Patrick Perlmutter
- Monash University, Clayton, Victoria, 3800, Australia, and Department of Biochemistry & Molecular Biology, Monash University, Clayton, Victoria, 3800, Australia
| |
Collapse
|
37
|
Liu JH, Song LD, Long YQ. Studies toward the total synthesis of cyclodidemniserinol trisulfate. Part I: 3,5,7-Trisubstituted 6,8-dioxabicyclo [3.2.1] octane core structure construction via a convergent and a linear stereoselective synthesis. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.05.102] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
38
|
Stolle A, Brauns C, Nüchter M, Ondruschka B, Bonrath W, Findeisen M. Thermal Behaviour of Selected C10H16 Monoterpenes. European J Org Chem 2006. [DOI: 10.1002/ejoc.200600022] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
39
|
Markad SD, Karanjule NS, Sharma T, Sabharwal SG, Puranik VG, Dhavale DD. Synthesis of tetrahydroxy perhydroaza-azulenes: tandem Johnson–Claisen rearrangement ofd-glucose-derived allylic alcohols. Org Biomol Chem 2006; 4:2549-55. [PMID: 16791317 DOI: 10.1039/b603545k] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Johnson-Claisen rearrangement of D-glucose-derived allylic alcohols 5a,b, afforded sugar-substituted gamma,delta-unsaturated ester in high yield. Conversion of the ester group to an azidomethyl group, epoxidation of the double bond and hydrogenation gave pyrrolidine ring skeletons 13a and 13b, which were transformed to tetrahydroxy perhydroaza-azulenes 1a and 1b, respectively. Glycosidase inhibitory activity was also evaluated.
Collapse
Affiliation(s)
- Shankar D Markad
- Garware Research Centre, Department of Chemistry, University of Pune, India
| | | | | | | | | | | |
Collapse
|
40
|
Murphy RC, Barkley RM, Zemski Berry K, Hankin J, Harrison K, Johnson C, Krank J, McAnoy A, Uhlson C, Zarini S. Electrospray ionization and tandem mass spectrometry of eicosanoids. Anal Biochem 2005; 346:1-42. [PMID: 15961057 DOI: 10.1016/j.ab.2005.04.042] [Citation(s) in RCA: 197] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2005] [Revised: 04/11/2005] [Accepted: 04/27/2005] [Indexed: 01/09/2023]
Affiliation(s)
- Robert C Murphy
- Department of Pharmacology, University of Colorado at Denver and Health Sciences Center, Mail Stop 8303, P.O. Box 6511, Aurora, CO 80045-0511, USA.
| | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Tisdale EJ, Vong BG, Li H, Kim SH, Chowdhury C, Theodorakis EA. Total synthesis of seco-lateriflorone. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00862-7] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
42
|
|
43
|
Tisdale EJ, Slobodov I, Theodorakis EA. Biomimetic total synthesis of forbesione and desoxymorellin utilizing a tandem Claisen/Diels–Alder/Claisen rearrangement. Org Biomol Chem 2003; 1:4418-22. [PMID: 14727628 DOI: 10.1039/b311833a] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A concise synthesis of forbesione (1) and desoxymorellin (3) is presented. Central to the strategy is a biomimetic Claisen/Diels-Alder/Claisen reaction cascade that proceeds in a regioselective manner and produces the desired scaffold exclusively. The observed regioselectivity and product distribution of the Claisen/Diels-Alder/Claisen reaction are attributed to the electronic effects of the xanthone oxygen (O10), the C9 carbonyl group and the nature of the C1 functionality.
Collapse
Affiliation(s)
- Eric J Tisdale
- Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla 92093-0358, USA
| | | | | |
Collapse
|
44
|
Current awareness in flavour and fragrance. FLAVOUR FRAG J 2001. [DOI: 10.1002/ffj.960] [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]
|