1
|
Ali R, Ahmed W, Jayant V, alvi S, Ahmed N, Ahmed A. Metathesis reactions in total‐ and natural product fragments syntheses. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100753] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rashid Ali
- Jamia Millia Islamia New Delhi India 110025 Department of Chemistry Jamia Nagar,New Delhi india110025 110025 New Delhi INDIA
| | - Waqar Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Vikrant Jayant
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - shakeel alvi
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Nadeem Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| | - Azeem Ahmed
- Jamia Millia Islamia Central University: Jamia Millia Islamia Chemistry INDIA
| |
Collapse
|
2
|
Monsigny L, Piątkowski J, Trzybiński D, Woźniak K, Nienałtowski T, Kajetanowicz A, Grela K. Activated Hoveyda‐Grubbs Olefin Metathesis Catalysts Derived from a Large Scale Produced Pharmaceutical Intermediate – Sildenafil Aldehyde. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100669] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Louis Monsigny
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Jakub Piątkowski
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Damian Trzybiński
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Krzysztof Woźniak
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Tomasz Nienałtowski
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
- Polpharma SA Pharmaceutical Works Pelplińska 19 83-200 Starogard Gdański Poland
| | - Anna Kajetanowicz
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| | - Karol Grela
- Biological and Chemical Research Centre Faculty of Chemistry University of Warsaw Żwirki i Wigury Street 101 02-089 Warsaw Poland
| |
Collapse
|
3
|
Smit W, Ekeli JB, Occhipinti G, Woźniak B, Törnroos KW, Jensen VR. Z-Selective Monothiolate Ruthenium Indenylidene Olefin Metathesis Catalysts. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00641] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wietse Smit
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen Norway
| | - Jonas B. Ekeli
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen Norway
| | - Giovanni Occhipinti
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen Norway
| | - Bartosz Woźniak
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen Norway
| | - Karl W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen Norway
| | - Vidar R. Jensen
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen Norway
| |
Collapse
|
4
|
Bidal YD, Urbina-Blanco CA, Poater A, Cordes DB, Slawin AMZ, Cavallo L, Cazin CSJ. Electronic effects in mixed N-heterocyclic carbene/phosphite indenylidene ruthenium metathesis catalysts. Dalton Trans 2019; 48:11326-11337. [PMID: 31273362 DOI: 10.1039/c9dt01811e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Five new complexes [RuCl2(SIMes)(Ind)(O-pXC5H4)] bearing different para-substituted triphenylphosphites (X = H, OCH3, CF3, Cl, SF5 and CN) were synthesised and used to study the effect of the electronic properties of the phosphite on olefin metathesis activity. Investigations of the physical properties of the new ligands and complexes were performed using physicochemical and DFT calculations. The catalytic activity of the complexes was benchmarked in challenging ring closing metathesis transformations featuring the formation of tetra-substituted double bonds. Complex [RuCl2(SIMes)(Ind)P(O-pCF3C5H4)3] (3c) exhibited a particularly high catalytic activity, superior to state-of-the-art catalysts, and was further tested on a wide range of substrates.
Collapse
Affiliation(s)
- Yannick D Bidal
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - César A Urbina-Blanco
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK and Laboratory for Chemical Technology, Ghent University, Technologiepark 125, B-9052 Gent, Belgium
| | - Albert Poater
- Institut de Química Computacional i Catàlisi, Departament de Química, University of Girona, Girona 17003, Catalonia, Spain
| | - David B Cordes
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - Alexandra M Z Slawin
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK
| | - Luigi Cavallo
- KAUST Catalysis Center, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Catherine S J Cazin
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, UK and Centre for Sustainable Chemistry, Department of Chemistry, Ghent University, Krijgslaan 281 - S3, 9000 Gent, Belgium.
| |
Collapse
|
5
|
Groso EJ, Schindler CS. Recent advances in the application of ring-closing metathesis for the synthesis of unsaturated nitrogen heterocycles. SYNTHESIS-STUTTGART 2019; 51:1100-1114. [PMID: 31983781 PMCID: PMC6983305 DOI: 10.1055/s-0037-1611651] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
This short review summarizes recent advances relating to the application of ring-closing olefin-olefin and carbonyl-olefin metathesis reactions towards the synthesis of unsaturated five- and six-membered nitrogen heterocycles. These developments include catalyst modifications and reaction designs that will enable access to more complex nitrogen heterocycles.
Collapse
Affiliation(s)
- Emilia J. Groso
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| | - Corinna S. Schindler
- Department of Chemistry, Willard Henry Dow Laboratory, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109, United States
| |
Collapse
|
6
|
Zhang GL, Yang L, Zhu J, Wei M, Yan W, Xiong DC, Ye XS. Synthesis and Antigenic Evaluation of Oligosaccharide Mimics of Vi Antigen from Salmonella typhi. Chemistry 2017. [DOI: 10.1002/chem.201702114] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Gao-Lan Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Lin Yang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Jingjing Zhu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Mengman Wei
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Wanjun Yan
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences; Peking University; Xue Yuan Road No. 38 Beijing 100191 China
| |
Collapse
|
7
|
Gawin R, Kozakiewicz A, Guńka PA, Dąbrowski P, Skowerski K. Bis(Cyclic Alkyl Amino Carbene) Ruthenium Complexes: A Versatile, Highly Efficient Tool for Olefin Metathesis. Angew Chem Int Ed Engl 2017; 56:981-986. [PMID: 27943616 PMCID: PMC5299612 DOI: 10.1002/anie.201609009] [Citation(s) in RCA: 71] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2016] [Revised: 10/28/2016] [Indexed: 12/21/2022]
Abstract
The state-of-the-art in olefin metathesis is application of N-heterocyclic carbene (NHC)-containing ruthenium alkylidenes for the formation of internal C=C bonds and of cyclic alkyl amino carbene (CAAC)-containing ruthenium benzylidenes in the production of terminal olefins. A straightforward synthesis of bis(CAAC)Ru indenylidene complexes, which are highly effective in the formation of both terminal and internal C=C bonds at loadings as low as 1 ppm, is now reported.
Collapse
Affiliation(s)
- Rafał Gawin
- Apeiron Synthesis SADuńska 954-427WrocławPoland
| | - Anna Kozakiewicz
- Faculty of ChemistryUniversity of Nicolaus Copernicus in ToruńGagarina 787-100TroruńPoland
| | - Piotr A. Guńka
- Faculty of ChemistryWarsaw University of TechnologyNoakowskiego 300-664WarszawaPoland
| | - Paweł Dąbrowski
- Faculty of ChemistryWrocław University of Science and TechnologyWybrzeże Wyspiańskiego 2750-370WrocławPoland
| | | |
Collapse
|
8
|
Gawin R, Kozakiewicz A, Guńka PA, Dąbrowski P, Skowerski K. Bis(Cyclic Alkyl Amino Carbene) Ruthenium Complexes: A Versatile, Highly Efficient Tool for Olefin Metathesis. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609009] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Rafał Gawin
- Apeiron Synthesis SA; Duńska 9 54-427 Wrocław Poland
| | - Anna Kozakiewicz
- Faculty of Chemistry; University of Nicolaus Copernicus in Toruń; Gagarina 7 87-100 Troruń Poland
| | - Piotr A. Guńka
- Faculty of Chemistry; Warsaw University of Technology; Noakowskiego 3 00-664 Warszawa Poland
| | - Paweł Dąbrowski
- Faculty of Chemistry; Wrocław University of Science and Technology; Wybrzeże Wyspiańskiego 27 50-370 Wrocław Poland
| | | |
Collapse
|
9
|
Hu DX, Withall DM, Challis GL, Thomson RJ. Structure, Chemical Synthesis, and Biosynthesis of Prodiginine Natural Products. Chem Rev 2016; 116:7818-53. [PMID: 27314508 PMCID: PMC5555159 DOI: 10.1021/acs.chemrev.6b00024] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The prodiginine family of bacterial alkaloids is a diverse set of heterocyclic natural products that have likely been known to man since antiquity. In more recent times, these alkaloids have been discovered to span a wide range of chemical structures that possess a number of interesting biological activities. This review provides a comprehensive overview of research undertaken toward the isolation and structural elucidation of the prodiginine family of natural products. Additionally, research toward chemical synthesis of the prodiginine alkaloids over the last several decades is extensively reviewed. Finally, the current, evidence-based understanding of the various biosynthetic pathways employed by bacteria to produce prodiginine alkaloids is summarized.
Collapse
Affiliation(s)
- Dennis X. Hu
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| | - David M. Withall
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Gregory L. Challis
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Regan J. Thomson
- Department of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
| |
Collapse
|
10
|
Lafaye K, Bosset C, Nicolas L, Guérinot A, Cossy J. Beyond catalyst deactivation: cross-metathesis involving olefins containing N-heteroaromatics. Beilstein J Org Chem 2015; 11:2223-41. [PMID: 26664645 PMCID: PMC4660986 DOI: 10.3762/bjoc.11.241] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/20/2015] [Indexed: 11/23/2022] Open
Abstract
Alkenes containing N-heteroaromatics are known to be poor partners in cross-metathesis reactions, probably due to catalyst deactivation caused by the presence of a nitrogen atom. However, some examples of ring-closing and cross-metathesis involving alkenes that incorporate N-heteroaromatics can be found in the literature. In addition, recent mechanistic studies have focused on the rationalization of nitrogen-induced catalysts deactivation. The purpose of this mini-review is to give a brief overview of successful metathesis reactions involving olefins containing N-heteroaromatics in order to delineate some guidelines for the use of these challenging substrates in metathesis reactions.
Collapse
Affiliation(s)
- Kevin Lafaye
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin, 75231 Paris Cedex 05, France
| | - Cyril Bosset
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin, 75231 Paris Cedex 05, France
| | - Lionel Nicolas
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin, 75231 Paris Cedex 05, France
| | - Amandine Guérinot
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin, 75231 Paris Cedex 05, France
| | - Janine Cossy
- Laboratoire de Chimie Organique, Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231 ESPCI ParisTech, CNRS, PSL Research University, 10, rue Vauquelin, 75231 Paris Cedex 05, France
| |
Collapse
|
11
|
Kancharla P, Kelly JX, Reynolds KA. Synthesis and Structure-Activity Relationships of Tambjamines and B-Ring Functionalized Prodiginines as Potent Antimalarials. J Med Chem 2015; 58:7286-309. [PMID: 26305125 PMCID: PMC11177801 DOI: 10.1021/acs.jmedchem.5b00560] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Synthesis and antimalarial activity of 94 novel bipyrrole tambjamines (TAs) and a library of B-ring functionalized tripyrrole prodiginines (PGs) against a panel of Plasmodium falciparum strains are described. The activity and structure-activity relationships demonstrate that the ring-C of PGs can be replaced by an alkylamine, providing for TAs with retained/enhanced potency. Furthermore, ring-B of PGs/TAs can be substituted with short alkyl substitutions at either 4-position (replacement of OMe) or 3- and 4-positions without impacting potency. Eight representative TAs and two PGs have been evaluated for antimalarial activity against multidrug-resistant P. yoelii in mice in the dose range of 5-100 mg/kg × 4 days by oral administration. The KAR425 TA offered greater efficacy than previously observed for any PG, providing 100% protection to malaria-infected mice until day 28 at doses of 25 and 50 mg/kg × 4 days, and was also curative in this model in a single oral dose (80 mg/kg). This study presents the first account of antimalarial activity in tambjamines.
Collapse
Affiliation(s)
- Papireddy Kancharla
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| | - Jane Xu Kelly
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
- Department of Veterans Affairs Medical Center, Portland, Oregon 97239, United States
| | - Kevin A. Reynolds
- Department of Chemistry, Portland State University, Portland, Oregon 97201, United States
| |
Collapse
|
12
|
Computational study on aromaticity and resonance structures of substituted BODIPY derivatives. COMPUT THEOR CHEM 2015. [DOI: 10.1016/j.comptc.2015.06.031] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
13
|
Vega MM, Crain DM, Konkol LC, Thomson RJ. Enantioselective synthesis of metacycloprodigiosin via the "Wasserman pyrrole". Tetrahedron Lett 2015; 56:3228-3230. [PMID: 26120213 DOI: 10.1016/j.tetlet.2014.12.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
A concise, nine-step enantioselective total synthesis of metacycloprodigiosin is reported. The synthesis provides increased step-efficiency over the previous racemic and enantioselective syntheses of this compound. Key features of the work include investigations into a convergent oxidative coupling reaction and subsequent ring-closing metathesis to deliver an advanced pyrrole intermediate we name the "Wasserman pyrrole" that can be converted to metacycloprodigiosin in one step.
Collapse
Affiliation(s)
- Marvin M Vega
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Diana M Crain
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Leah C Konkol
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| | - Regan J Thomson
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208
| |
Collapse
|
14
|
Katsuta R, Fujikawa S, Yajima A, Nukada T. Stereoselective synthesis of (−)-decarestrictine G. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.082] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
15
|
Nisha N, Kumar K, Kumar V. Prodigiosin alkaloids: recent advancements in total synthesis and their biological potential. RSC Adv 2015. [DOI: 10.1039/c4ra10296g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The present review article is focused on the medicinal potential and total synthesis of prodigiosins witnessed in the last decade. The aim will be to provide an inspiration to the marvels and pit falls of constructing the polypyrrole heterocycles with in the complex systems.
Collapse
Affiliation(s)
- Nisha Nisha
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Kewal Kumar
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar-143005
- India
| | - Vipan Kumar
- Department of Chemistry
- Guru Nanak Dev University
- Amritsar-143005
- India
| |
Collapse
|
16
|
Yu B, Xie Y, Hamad FB, Leus K, Lyapkov AA, Van Hecke K, Verpoort F. Synthesis and characterization of non-chelating ruthenium–indenylidene olefin metathesis catalysts derived from substituted 1,1-diphenyl-2-propyn-1-ols. NEW J CHEM 2015. [DOI: 10.1039/c4nj02034k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
The synthesis and characterization of four first-generation modified non-chelating indenylidene ruthenium catalysts is reported, as well as their catalytic performance in olefin metathesis reactions.
Collapse
Affiliation(s)
- Baoyi Yu
- Department of Inorganic and Physical Chemistry
- Ghent University
- Ghent
- Belgium
| | - Yu Xie
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing
- Center for Chemical and Material Engineering
- Wuhan University of Technology
| | - Fatma B. Hamad
- Dar es Salaam University College of Education
- Faculty of Science
- Department of Chemistry
- Dar es Salaam
- Tanzania
| | - Karen Leus
- Department of Inorganic and Physical Chemistry
- Ghent University
- Ghent
- Belgium
| | - Alex A. Lyapkov
- National Research Tomsk Polytechnic University
- Russian Federation
| | - Kristof Van Hecke
- Department of Inorganic and Physical Chemistry
- Ghent University
- Ghent
- Belgium
| | - Francis Verpoort
- Department of Inorganic and Physical Chemistry
- Ghent University
- Ghent
- Belgium
- Laboratory of Organometallics
| |
Collapse
|
17
|
Yu B, Hamad FB, Sels B, Van Hecke K, Verpoort F. Ruthenium indenylidene complexes bearing N-alkyl/N-mesityl-substituted N-heterocyclic carbene ligands. Dalton Trans 2015; 44:11835-42. [DOI: 10.1039/c5dt00967g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Three ruthenium indenylidene complexes containing N-alkyl/N-mesityl mixed N-heterocyclic carbene ligands show a significant improvement in their catalytic initiation rate. The smaller sized NHC contributes to a better catalytic performance.
Collapse
Affiliation(s)
- Baoyi Yu
- Department of Inorganic and Physical Chemistry
- Ghent University
- Ghent
- Belgium
| | - Fatma B. Hamad
- Dar es Salaam University College of Education
- Faculty of Science
- Department of Chemistry
- Dar es Salaam
- Tanzania
| | - Bert Sels
- Centre for Surface Chemistry and Catalysis
- Leuven University
- Leuven
- Belgium
| | - Kristof Van Hecke
- Department of Inorganic and Physical Chemistry
- Ghent University
- Ghent
- Belgium
| | - Francis Verpoort
- Laboratory of Organometallics
- Catalysis and Ordered Materials
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing; Center for Chemical and Material Engineering
- Wuhan University of Technology
- Wuhan 430070
| |
Collapse
|
18
|
Pelkey ET, Pelkey SJ, Greger JG. De Novo Synthesis of 3-Pyrrolin-2-Ones. ADVANCES IN HETEROCYCLIC CHEMISTRY 2015. [DOI: 10.1016/bs.aihch.2015.04.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
19
|
Kerr DJ, Flynn BL. Studies Towards a Concise Enantioselective Synthesis of Roseophilins. Aust J Chem 2015. [DOI: 10.1071/ch15407] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An oxazolidone auxiliary-controlled asymmetric Nazarov reaction has been applied to the synthesis of the cyclopentyl-fused pyrrole core of roseophilins. Additionally, a concise synthetic route to the pyrrole-furan biaryl fragment required in the synthesis of the recently isolated dechlororoseophilin is described. It is anticipated that these two syntheses can be combined in future efforts to provide efficient, convergent access to (+)-dechlororoseophilin.
Collapse
|
20
|
Arivizhivendhan KV, Boopathy R, Maharaja P, Regina Mary R, Sekaran G. Bioactive prodigiosin-impregnated cellulose matrix for the removal of pathogenic bacteria from aqueous solution. RSC Adv 2015. [DOI: 10.1039/c5ra09172a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The prodigiosin impregnated column reactor (PICCR) was developed for the removal of pathogenic bacteria from water/wastewater. The impregnation of prodigiosin on cellulose matrix significantly improved the activity and stability.
Collapse
Affiliation(s)
| | - R. Boopathy
- Environmental Technology Division
- Central Leather Research Institute (CSIR)
- Chennai – 600 020
- India
| | - P. Maharaja
- Environmental Technology Division
- Central Leather Research Institute (CSIR)
- Chennai – 600 020
- India
| | - R. Regina Mary
- PG & Research Department of Zoology
- Auxilium College
- Vellore – 623 006
- India
| | - G. Sekaran
- Environmental Technology Division
- Central Leather Research Institute (CSIR)
- Chennai – 600 020
- India
| |
Collapse
|
21
|
Two commercially available initiators for the retarded ring-opening metathesis polymerization of dicyclopentadiene. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1249-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
22
|
Rouen M, Borré E, Falivene L, Toupet L, Berthod M, Cavallo L, Olivier-Bourbigou H, Mauduit M. Cycloalkyl-based unsymmetrical unsaturated (U2)-NHC ligands: flexibility and dissymmetry in ruthenium-catalysed olefin metathesis. Dalton Trans 2014; 43:7044-9. [DOI: 10.1039/c4dt00142g] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Structural features, chemical stabilities and catalytic profiles in olefin metathesis of a new library of low-cost cycloalkyl-based U2-NHC Ru complexes were disclosed.
Collapse
Affiliation(s)
- Mathieu Rouen
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- UMR 6226
- OMC Team
- 35708 Rennes Cedex 7, France
| | - Etienne Borré
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- UMR 6226
- OMC Team
- 35708 Rennes Cedex 7, France
| | - Laura Falivene
- Dipartimento di Chimica
- Università di Salerno
- Via Ponte don Melillo
- I-84084 Fisciano (SA), Italy
| | - Loic Toupet
- Institut de Physique de Rennes - Université Rennes 1
- CNRS
- UMR 6251 Campus de Beaulieu Bâtiment 11A
- 35042 Rennes Cedex, France
| | - Mikaël Berthod
- IFP Energies nouvelles
- Rond Point de l’échangeur de Solaize
- 69360 Solaize, France
| | - Luigi Cavallo
- Dipartimento di Chimica
- Università di Salerno
- Via Ponte don Melillo
- I-84084 Fisciano (SA), Italy
- KAUST Catalysis Center
| | | | - Marc Mauduit
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS
- UMR 6226
- OMC Team
- 35708 Rennes Cedex 7, France
| |
Collapse
|
23
|
Cai XC, Snider BB. Synthesis of the spiroiminal moiety and approaches to the synthesis of marineosins A and B. J Org Chem 2013; 78:12161-75. [PMID: 24199754 PMCID: PMC3885995 DOI: 10.1021/jo402178r] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A short and efficient synthesis of model spiroiminals that have the same stereochemistry as marineosins A and B, but different conformations, was carried out in six or seven steps from 6-methyltetrahydropyran-2-one. These spiroiminals were also prepared biomimetically by reduction of an enol ether. A more highly substituted spiroiminal with the same stereochemistry and conformation as marineosin A was prepared in 11 steps from parasorbic acid. A macrocyclic pyrrole lactone was prepared stereospecifically in 10 steps. A five-step sequence converted the lactone to a late hemi-iminal intermediate that has resisted the methylation and spiroiminal formation that would lead to marineosin A.
Collapse
Affiliation(s)
- Xiao-Chuan Cai
- Department of Chemistry, MS 015, Brandeis University, Waltham, Massachusetts 02454-9110, United States
| | - Barry B. Snider
- Department of Chemistry, MS 015, Brandeis University, Waltham, Massachusetts 02454-9110, United States
| |
Collapse
|
24
|
Chevalley A, Prunet J, Mauduit M, Férézou JP. Model Studies for a Ring-Closing Metathesis Approach to the Bafilomycin Macrolactone Core from a 2,2-Dimethoxy Tetraenic Ester Precursor. European J Org Chem 2013. [DOI: 10.1002/ejoc.201300559] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
25
|
Jones BT, Hu DX, Savoie BM, Thomson RJ. Elimination of butylcycloheptylprodigiosin as a known natural product inspired by an evolutionary hypothesis for cyclic prodigiosin biosynthesis. JOURNAL OF NATURAL PRODUCTS 2013; 76:1937-45. [PMID: 24053736 PMCID: PMC3828036 DOI: 10.1021/np400531b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
The cyclic prodigiosins are an important family of bioactive natural products that continue to be the subject of numerous structural, synthetic, and biosynthetic studies. In particular, the structural assignments of the isomeric cyclic prodigiosins butylcycloheptylprodigiosin (BCHP) and streptorubin B have been the cause of significant confusion. Herein, we report detailed studies regarding the electron impact (EI) mass spectra of synthetic BCHP and streptorubin B that have allowed us to distinguish the two compounds in the absence of quality historical isolation NMR data. On the basis of these fragmentation differences, the status of BCHP as a natural product is challenged. The proposed mechanism of fragmentation is supported by the EI mass spectra of synthetic pentyl-chain analogues of BCHP and streptorubin B, X-ray crystallography, and DFT calculations. Elimination of BCHP from the prodigiosin family supports a proposed evolutionary hypothesis for the surprising biosynthesis of cyclic prodigiosins.
Collapse
|
26
|
Del Valle DJ, Krische MJ. Total synthesis of (+)-trienomycins A and F via C-C bond-forming hydrogenation and transfer hydrogenation. J Am Chem Soc 2013; 135:10986-9. [PMID: 23862627 PMCID: PMC3757526 DOI: 10.1021/ja4061273] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The triene-containing C17-benzene ansamycins trienomycins A and F were prepared in 16 steps (longest linear sequence, LLS) and 28 total steps. The C11-C13 stereotriad was generated via enantioselective Ru-catalyzed alcohol CH syn crotylation followed by chelation-controlled carbonyl dienylation. Enantioselective Rh-catalyzed acetylene-aldehyde reductive coupling mediated by gaseous H2 was used to form a diene that ultimately was subjected to diene-diene ring closing metathesis to form the macrocycle. The present approach is 14 steps shorter (LLS) than the prior syntheses of trienomycins A and F, and 8 steps shorter than any prior synthesis of a triene-containing C17-benzene ansamycin.
Collapse
Affiliation(s)
- David J Del Valle
- Department of Chemistry and Biochemistry, University of Texas at Austin, Austin, Texas 78712, USA
| | | |
Collapse
|
27
|
Kondoh A, Arlt A, Gabor B, Fürstner A. Total synthesis of nominal gobienine A. Chemistry 2013; 19:7731-8. [PMID: 23589394 DOI: 10.1002/chem.201300827] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Indexed: 11/10/2022]
Abstract
The lichen-derived glycoconjugate gobienine A is structurally more complex than most glycolipids isolated from higher plants by virtue of the all-cis substituted γ-lactone substructure embedded into its macrocyclic frame. A concise entry into this very epimerization-prone and hence challenging structural motif is presented, which relies on an enantioselective cyanohydrin formation, an intramolecular Blaise reaction, a palladium-catalyzed alkoxycarbonylation, and a diastereoselective hydrogenation of the tetrasubstituted alkene in the resulting butenolide. This strategy, in combination with ring-closing olefin metathesis for the formation of the macrocyclic perimeter, allowed the proposed structure of gobienine A (1) to be formed in high overall yield. The recorded spectral data show that the structure originally attributed to gobienine A is incorrect and that it is not the epimerization-prone ester site on the butanolide ring that is the locus of misassignment; rather, the discrepancy must be more profound.
Collapse
Affiliation(s)
- Azusa Kondoh
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | | | | | | |
Collapse
|
28
|
Varnado CD, Jr., Rosen EL, Collins MS, Lynch VM, Bielawski CW. Synthesis and study of olefin metathesis catalysts supported by redox-switchable diaminocarbene[3]ferrocenophanes. Dalton Trans 2013; 42:13251-64. [DOI: 10.1039/c3dt51278a] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
29
|
Lichtenheldt M, Kress S, Blechert S. Synthesis of electronically modified Ru-based neutral 16 VE allenylidene olefin metathesis precatalysts. Molecules 2012; 17:5177-86. [PMID: 22628039 PMCID: PMC6268640 DOI: 10.3390/molecules17055177] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2012] [Revised: 04/25/2012] [Accepted: 04/26/2012] [Indexed: 11/20/2022] Open
Abstract
Electronic modifications within Ru-based olefin metathesis precatalysts have provided a number of new complexes with significant differences in reactivity profiles. So far, this aspect has not been studied for neutral 16 VE allenylidenes. The first synthesis of electronically altered complexes of this type is reported. Following the classical dehydration approach (vide infra) modified propargyl alcohols were transformed to the targeted allenylidene systems in the presence of PCy3. The catalytic performance was investigated in RCM reaction (ring closing metathesis) of benchmark substrates such as diallyltosylamide (6) and diethyl diallylmalonate (7).
Collapse
Affiliation(s)
| | | | - Siegfried Blechert
- Author to whom correspondence should be addressed; ; Tel.: +49-30-314-22255; Fax: +49-30-314-29745
| |
Collapse
|
30
|
Thompson A, Bennett S, Gillis HM, Wood TE. Pyrroles, dipyrrins and prodigiosenes: one, two and three. J PORPHYR PHTHALOCYA 2012. [DOI: 10.1142/s1088424608000303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The Thompson group aims to further the chemistry of pyrroles, dipyrrins and prodigiosenes. This micro-review discusses each of these research areas in turn, focussing on our achievements thus far.
Collapse
Affiliation(s)
- Alison Thompson
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4J3, Canada
| | - Sarah Bennett
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4J3, Canada
| | - H. Martin Gillis
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4J3, Canada
| | - Tabitha E. Wood
- Department of Chemistry, Dalhousie University, Halifax, Nova Scotia, B3H 4J3, Canada
| |
Collapse
|
31
|
|
32
|
Hickmann V, Kondoh A, Gabor B, Alcarazo M, Fürstner A. Catalysis-Based and Protecting-Group-Free Total Syntheses of the Marine Oxylipins Hybridalactone and the Ecklonialactones A, B, and C. J Am Chem Soc 2011; 133:13471-80. [DOI: 10.1021/ja204027a] [Citation(s) in RCA: 127] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Volker Hickmann
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Azusa Kondoh
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Barbara Gabor
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Manuel Alcarazo
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, D-45470 Mülheim/Ruhr, Germany
| |
Collapse
|
33
|
Lipshutz BH, Ghorai S, Leong WWY, Taft BR, Krogstad DV. Manipulating micellar environments for enhancing transition metal-catalyzed cross-couplings in water at room temperature. J Org Chem 2011; 76:5061-73. [PMID: 21539384 PMCID: PMC3608412 DOI: 10.1021/jo200746y] [Citation(s) in RCA: 108] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The remarkable effects of added salts on the properties of aqueous micelles derived from the amphiphile PTS are described. Most notably, Heck reactions run in the presence of NaCl lead to couplings on aryl bromides in water at room temperature. Olefin cross- and ring-closing metathesis reactions run in the presence of small amounts of pH-lowering KHSO(4) are also accelerated, another phenomenon that does not apply to typical processes in organic media. These salt effects allow, in general, for synthetically valuable C-C bond-forming processes to be conducted under environmentally benign conditions. Recycling of the surfactant is also demonstrated.
Collapse
Affiliation(s)
- Bruce H Lipshutz
- Department of Chemistry & Biochemistry, University of California, Santa Barbara, California 93106, USA.
| | | | | | | | | |
Collapse
|
34
|
Gagnepain J, Moulin E, Nevado C, Waser M, Maier A, Kelter G, Fiebig HH, Fürstner A. Molecular Editing and Assessment of the Cytotoxic Properties of Iejimalide and Progeny. Chemistry 2011; 17:6973-84. [DOI: 10.1002/chem.201100180] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Indexed: 01/21/2023]
|
35
|
Gagnepain J, Moulin E, Fürstner A. Gram-Scale Synthesis of Iejimalide B. Chemistry 2011; 17:6964-72. [DOI: 10.1002/chem.201100178] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2011] [Indexed: 02/03/2023]
|
36
|
Szadkowska A, Żukowska K, Pazio AE, Woźniak K, Kadyrov R, Grela K. Ruthenium Olefin Metathesis Catalysts Containing Six-Membered Sulfone and Sulfonamide Chelating Rings. Organometallics 2011. [DOI: 10.1021/om101129b] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anna Szadkowska
- Institute of Organic Chemistry, Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Karolina Żukowska
- Institute of Organic Chemistry, Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
- Department of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warsaw, Poland
| | - Aleksandra E. Pazio
- Department of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warsaw, Poland
| | - Krzysztof Woźniak
- Department of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warsaw, Poland
| | - Renat Kadyrov
- Evonik Degussa GmbH, 097-12a Rodenbacher Chaussee 4, 63457 Hanau-Wolfgang, Germany
| | - Karol Grela
- Institute of Organic Chemistry, Polish Academy of Science, Kasprzaka 44/52, 01-224 Warsaw, Poland
- Department of Chemistry, University of Warsaw, Żwirki i Wigury Street 101, 02-089 Warsaw, Poland
| |
Collapse
|
37
|
Rössle M, Del Valle DJ, Krische MJ. Synthesis of the cytotrienin A core via metal catalyzed C-C coupling. Org Lett 2011; 13:1482-5. [PMID: 21323372 DOI: 10.1021/ol200160p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A synthetic approach to the C17-benzene ansamycins via metal catalyzed C-C coupling is described. Key bond formations include direct iridium catalyzed carbonyl crotylation from the alcohol oxidation level followed by chelation-controlled Sakurai-Seyferth dienylation to form the stereotriad, which is attached to the arene via Suzuki cross-coupling. The diene-containing carboxylic acid is prepared using rhodium catalyzed acetylene-aldehyde reductive C-C coupling mediated by gaseous hydrogen. Finally, ring-closing metathesis delivers the cytotrienin core.
Collapse
Affiliation(s)
- Michael Rössle
- University of Texas at Austin, Department of Chemistry and Biochemistry, Austin, Texas 78712, United States
| | | | | |
Collapse
|
38
|
Nuñez A, Abarca B, Cuadro AM, Alvarez-Builla J, Vaquero JJ. Ring-Closing Metathesis Approach to Heteroaromatic Cations: Synthesis of Benzo[a]quinolizinium Salts. European J Org Chem 2011. [DOI: 10.1002/ejoc.201001373] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
39
|
Hudson DM, Valente EJ, Schachner J, Limbach M, Müller K, Schanz HJ. A Ru-vinylvinylidene Complex: Straightforward Synthesis of a Latent Olefin Metathesis Catalyst. ChemCatChem 2011. [DOI: 10.1002/cctc.201000368] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
40
|
Woodward CP, Spiccia ND, Jackson WR, Robinson AJ. A simple amine protection strategy for olefinmetathesis reactions. Chem Commun (Camb) 2011; 47:779-81. [DOI: 10.1039/c0cc03716h] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
41
|
Wappel J, Urbina-Blanco CA, Abbas M, Albering JH, Saf R, Nolan SP, Slugovc C. Halide exchanged Hoveyda-type complexes in olefin metathesis. Beilstein J Org Chem 2010; 6:1091-8. [PMID: 21160566 PMCID: PMC3002021 DOI: 10.3762/bjoc.6.125] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2010] [Accepted: 10/08/2010] [Indexed: 12/02/2022] Open
Abstract
The aims of this contribution are to present a straightforward synthesis of 2nd generation Hoveyda-type olefin metathesis catalysts bearing bromo and iodo ligands, and to disclose the subtle influence of the different anionic co-ligands on the catalytic performance of the complexes in ring opening metathesis polymerisation, ring closing metathesis, enyne cycloisomerisation and cross metathesis reactions.
Collapse
Affiliation(s)
- Julia Wappel
- Institute for Chemistry and Technology of Materials (ICTM), Graz University of Technology, Stremayrgasse 9, 8010 Graz, Austria. -
| | | | | | | | | | | | | |
Collapse
|
42
|
Removal of an olefin metathesis catalyst using 4-nitrophenyl acrylate based polymer supports. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.08.114] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
43
|
West R, Panagabko C, Atkinson J. Synthesis and characterization of BODIPY-alpha-tocopherol: a fluorescent form of vitamin E. J Org Chem 2010; 75:2883-92. [PMID: 20387845 DOI: 10.1021/jo100095n] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Fluorescent nitrobenzoxadiazole analogues of alpha-tocopherol (NBD-alpha-Tocs; lambda(ex) = 468 nm, lambda(em) = 527 nm) have been made previously to aid study of the intracellular location and transfer of vitamin E. However, these analogues are susceptible to photobleaching while under illumination for confocal microscopy as well as in in vitro FRET transfer assays. Here we report the synthesis of three fluorescent analogues of alpha-tocopherol incorporating the more robust dipyrrometheneboron difluoride (BODIPY) fluorophore. A BODIPY-linked chromanol should have no intervening polar functional groups that might interfere with binding to the hydrophobic binding site of the tocopherol transfer protein (alpha-TTP). A key step in bringing the two ring systems together was a metathesis reaction of vinyl chromanol and an alkenyl BODIPY. An o-tolyl containing second generation Grubbs catalyst was identified as the best catalyst for effecting the metathesis without detectable alkene isomerization, which when it occurred produced a mixture of chain lengths in the alkyl linker. C8-BODIPY-alpha-Toc 10c (lambda(ex) = 507 nm, lambda(em) = 511 nm, epsilon(507) = 83,000 M(-1) cm(-1)) having an eight-carbon chain between the chromanol and fluorophore, had the highest affinity for alpha-TTP (K(d) = 94 +/- 3 nM) and bound specifically as it could not be displaced with cholesterol.
Collapse
Affiliation(s)
- Ryan West
- Department of Chemistry and Centre for Biotechnology, Brock University, St. Catharines, Ontario, Canada L2S 3A1
| | | | | |
Collapse
|
44
|
Jimenez LR, Gallon BJ, Schrodi Y. A Most Convenient and Atom-Economic Preparation of a Highly Active Ring-Closing Metathesis Catalyst. Organometallics 2010. [DOI: 10.1021/om1005929] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leonel R. Jimenez
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, California 91330
| | - Benjamin J. Gallon
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, California 91330
| | - Yann Schrodi
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, California 91330
| |
Collapse
|
45
|
Broggi J, Urbina-Blanco C, Clavier H, Leitgeb A, Slugovc C, Slawin A, Nolan S. The Influence of Phosphane Ligands on the Versatility of Ruthenium-Indenylidene Complexes in Metathesis. Chemistry 2010; 16:9215-25. [DOI: 10.1002/chem.201000659] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
46
|
Peeck LH, Plenio H. Synthesis and RCM Activity of [(NHC)(NHCewg)RuCl2(3-phenylindenylid-1-ene)] Complexes. Organometallics 2010. [DOI: 10.1021/om1002717] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Lars H. Peeck
- Organometallic Chemistry, Technische Universität Darmstadt, Petersenstrasse 18, 64287 Darmstadt, Germany
| | - Herbert Plenio
- Organometallic Chemistry, Technische Universität Darmstadt, Petersenstrasse 18, 64287 Darmstadt, Germany
| |
Collapse
|
47
|
Smith BJ, Qu T, Mulder M, Noetzel MJ, Lindsley CW, Sulikowski GA. Synthesis and bioactivity of (±)-tetrahydrohaliclonacyclamine A. Tetrahedron 2010. [DOI: 10.1016/j.tet.2010.03.117] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
48
|
Li CS, Tsai YH, Lee WC, Kuo WJ. Synthesis and Photophysical Properties of Pyrrole/Polycyclic Aromatic Units Hybrid Fluorophores. J Org Chem 2010; 75:4004-13. [DOI: 10.1021/jo100158a] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chang-Shun Li
- Department of Applied Chemistry, National University of Kaohsiung, Kaohsiung, Taiwan 811
| | - Ya-Hsuan Tsai
- Department of Applied Chemistry, National University of Kaohsiung, Kaohsiung, Taiwan 811
| | - Wei-Chen Lee
- Department of Applied Chemistry, National University of Kaohsiung, Kaohsiung, Taiwan 811
| | - Wen-Jang Kuo
- Department of Applied Chemistry, National University of Kaohsiung, Kaohsiung, Taiwan 811
| |
Collapse
|
49
|
Lozano-Vila AM, Monsaert S, Bajek A, Verpoort F. Ruthenium-Based Olefin Metathesis Catalysts Derived from Alkynes. Chem Rev 2010; 110:4865-909. [PMID: 20392041 DOI: 10.1021/cr900346r] [Citation(s) in RCA: 175] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ana M. Lozano-Vila
- Department of Inorganic and Physical Chemistry, Laboratory of Organometallic Chemistry and Catalysis, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium, Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang 110036, People’s Republic of China, and College of Chemistry, Liaoning University, Shenyang 110036, People’s Republic of China
| | - Stijn Monsaert
- Department of Inorganic and Physical Chemistry, Laboratory of Organometallic Chemistry and Catalysis, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium, Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang 110036, People’s Republic of China, and College of Chemistry, Liaoning University, Shenyang 110036, People’s Republic of China
| | - Agata Bajek
- Department of Inorganic and Physical Chemistry, Laboratory of Organometallic Chemistry and Catalysis, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium, Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang 110036, People’s Republic of China, and College of Chemistry, Liaoning University, Shenyang 110036, People’s Republic of China
| | - Francis Verpoort
- Department of Inorganic and Physical Chemistry, Laboratory of Organometallic Chemistry and Catalysis, Ghent University, Krijgslaan 281 (S-3), 9000 Ghent, Belgium, Liaoning Provincial Key Laboratory for Green Synthesis and Preparative Chemistry of Advanced Materials, Liaoning University, Shenyang 110036, People’s Republic of China, and College of Chemistry, Liaoning University, Shenyang 110036, People’s Republic of China
| |
Collapse
|
50
|
Aldrich LN, Dawson ES, Lindsley CW. Evaluation of the Biosynthetic Proposal for the Synthesis of Marineosins A and B. Org Lett 2010; 12:1048-51. [DOI: 10.1021/ol100034p] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leslie N. Aldrich
- Departments of Chemistry and Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Eric S. Dawson
- Departments of Chemistry and Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| | - Craig W. Lindsley
- Departments of Chemistry and Pharmacology, Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, Tennessee 37232
| |
Collapse
|