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Wang H, Liu Y, Zhang H, Yang B, He H, Gao S. Asymmetric Total Synthesis of Cephalotaxus Diterpenoids: Cephinoid P, Cephafortoid A, 14- epi-Cephafortoid A and Fortalpinoids M-N, P. J Am Chem Soc 2023; 145:16988-16994. [PMID: 37493585 DOI: 10.1021/jacs.3c05455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/27/2023]
Abstract
The asymmetric total syntheses of cephalotaxus C19 diterpenoids, bearing a unique cycloheptene A ring with a chiral methyl group at C-12, were disclosed based on a universal strategy. Six members, including cephinoid P, cephafortoid A, 14-epi-cephafortoid A and fortalpinoids M-N, P, were accomplished for the first time. The concise approach relies on two crucial steps: (1) a Nicholas/Hosomi-Sakurai cascade reaction was developed to efficiently generate the cycloheptene ring bearing a chiral methyl group; (2) an intramolecular Pauson-Khand reaction was followed to facilitate the construction of the complete skeleton of target molecules. Our studies provide a new strategy for the synthetic analysis of cephalotaxus diterpenoids and structurally related polycyclic natural products.
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Affiliation(s)
- Hui Wang
- State Key Laboratory of Molecular & Process Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Yi Liu
- State Key Laboratory of Molecular & Process Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Hongyuan Zhang
- State Key Laboratory of Molecular & Process Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Baochao Yang
- State Key Laboratory of Molecular & Process Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Haibing He
- State Key Laboratory of Molecular & Process Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Shuanhu Gao
- State Key Laboratory of Molecular & Process Engineering, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Shanghai Frontiers Science Center of Molecule Intelligent Syntheses, School of Chemistry and Molecular Engineering, Wuhu Hospital Affiliated to East China Normal University, East China Normal University, Shanghai 200062, P. R. China
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2
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Nguyen KC, Lindsey JS. Synthesis of a BC-Dihydrodipyrrin Building Block of Bacteriochlorophyll a. J Org Chem 2023; 88:11205-11216. [PMID: 37471708 DOI: 10.1021/acs.joc.3c01216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
A strategy for the synthesis of bacteriochlorophyll a relies on joining AD and BC halves that contain the requisite stereochemical configurations of the target macrocycle. The BC half (1) is a dihydrodipyrrin bearing a dimethoxymethyl group at the 1-position, a β-ketoester at the 8-position, and (R)-2-methyl and (R)-3-ethyl substituents in the pyrroline ring. An established route to AD-dihydrodipyrrins (Pd-mediated coupling of a 2-halopyrrole with a chiral 4-pentynoic acid followed by Petasis methenylation, acidic hydrolysis, Paal-Knorr ring closure, and Riley oxidation) proved to be unviable for BC-dihydrodipyrrins given the presence of the β-ketoester unit. A route presented here entails Pd-mediated coupling of a 2-halopyrrole (2) with (3R,4R)-4-ethyl-1,1-dimethoxy-3-methylhex-5-yn-2-one (3), anti-Markovnikov hydration of the alkyne to give the 1,4-diketone, and Paal-Knorr ring closure. Compound 3 was prepared by Schreiber-modified Nicholas reaction beginning with (S)-4-isopropyl-3-propionyloxazolidin-2-one and the hexacarbonyldicobalt complex of (±) 3-methoxy-1-(trimethylsilyl)pentyne followed by transformation of the aldehyde derived therefrom to the 1,1-dimethoxymethylcarbonyl motif. The absolute stereochemical configuration of the Schreiber-Nicholas alkylation product was confirmed by single-crystal X-ray diffraction, whereas the BC half (1) by 1H NMR spectroscopy showed a J value of 2.9 Hz consistent with the trans-configuration. Taken together, the route provides a key chiral building block for the synthesis of photosynthetic tetrapyrroles and analogues.
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Affiliation(s)
- Khiem Chau Nguyen
- Department of Chemistry North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Jonathan S Lindsey
- Department of Chemistry North Carolina State University, Raleigh, North Carolina 27695, United States
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3
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Gomez AM, Ventura J, Uriel C, Lopez JC. Synthesis of carbohydrate–BODIPY hybrids. PURE APPL CHEM 2023. [DOI: 10.1515/pac-2023-0113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Abstract
Abstract
Owing to the relevance of fluorescently labeled carbohydrates in the study of biological processes, we have investigated several routes for the preparation of saccharides covalently linked to borondipyrromethene (BODIPY) fluorophores. We have shown that BODIPY dyes can be used as aglycons through synthetic saccharide protocols. In particular, a per-alkylated 8-(2-hydroxy-methylphenyl)-4,4′-dicyano-BODIPY derivative, which withstands glycosylation and protection/deprotection reaction conditions without decomposition, has been used in the stepwise synthesis of two fluorescently labeled trisaccharides. These saccharides displayed high water solubility and a low tendency to (H-)aggregation, a phenomenon that causes loss of photophysical efficiency in BODIPYs. Two additional synthetic strategies toward glyco-BODIPYs have also been described. The first method relies on a Ferrier-type C-glycosylation of the BODIPY core, leading to linker-free carbohydrate–BODIPY hybrids. Secondly, the application of the Nicholas propargylation reaction to 1,3,5,7-tetramethyl BODIPYs provides access to 2,6-dipropargylated BODIPYs that readily undergo CuAAC reactions with azido-containing sugars. From a photophysical standpoint, the BODIPY-labeled saccharides could be used as stable and fluorescent water-soluble chromophores, thereby addressing one of the current challenges in molecular imaging.
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Affiliation(s)
- Ana M. Gomez
- Bioorganic Chemistry , IQOG-CSIC, Instituto Quimica Organica General , Juan de la Cierva 3, 28006 , Madrid , Spain
| | - Juan Ventura
- Bioorganic Chemistry , IQOG-CSIC, Instituto Quimica Organica General , Juan de la Cierva 3, 28006 , Madrid , Spain
| | - Clara Uriel
- Bioorganic Chemistry , IQOG-CSIC, Instituto Quimica Organica General , Juan de la Cierva 3, 28006 , Madrid , Spain
| | - Jose Cristobal Lopez
- Bioorganic Chemistry , IQOG-CSIC, Instituto Quimica Organica General , Juan de la Cierva 3, 28006 , Madrid , Spain
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4
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Uriel C, Gómez AM, García Martínez de la Hidalga E, Bañuelos J, Garcia-Moreno I, López JC. Access to 2,6-Dipropargylated BODIPYs as "Clickable" Congeners of Pyrromethene-567 Dye: Photostability and Synthetic Versatility. Org Lett 2021; 23:6801-6806. [PMID: 34403255 PMCID: PMC8419863 DOI: 10.1021/acs.orglett.1c02380] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
![]()
Hitherto
unreported
2,6-dipropargyl-1,3,5,7-tetramethyl BODIPYs
can be efficiently prepared by a Nicholas reaction/decomplexation
protocol from 1,3,5,7-tetramethyl BODIPYs. The title compounds, which
improve the BODIPY photostability by retaining their inherent photophysical
and photochemical properties, can be engaged in efficient copper(I)-catalyzed
azide–alkyne cycloaddition (CuAAC) “click-type”
reactions with azido derivatives to provide all-BODIPY-triads or conjugated
BODIPYs.
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Affiliation(s)
- Clara Uriel
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006, Madrid, Spain
| | - Ana M Gómez
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006, Madrid, Spain
| | | | - Jorge Bañuelos
- Departamento de Química Física. Universidad del Pais Vasco-EHU, Apartado 644, 48080, Bilbao, Spain
| | | | - J Cristobal López
- Instituto de Química Orgánica General, IQOG-CSIC, Juan de la Cierva 3, 28006, Madrid, Spain
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Wang P, Lindsey JS. Synthesis of AD-Dihydrodipyrrins Equipped with Latent Substituents of Native Chlorophylls and Bacteriochlorophylls. J Org Chem 2021; 86:11794-11811. [PMID: 34347485 DOI: 10.1021/acs.joc.1c01239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Native chlorophylls and bacteriochlorophylls share a common trans-substituted pyrroline ring D (17-propionic acid, 18-methyl), whereas diversity occurs in ring A particularly at the 3-position. Two dihydrodipyrrins equipped with native-like D-ring substituents and tailorable A-ring substituents have been synthesized. The synthesis relies on a Schreiber-modified Nicholas reaction to construct the stereochemically defined precursor to ring D, a dialkyl-substituted pent-4-ynoic acid. The carboxylic acid group of the intact propionic acid proved unworkable, whereupon protected propionate (-CO2tBu) and several latent propyl ethers were examined. The tert-butyldiphenylsilyl-protected propanol substituent proved satisfactory for reaction of the chiral N-acylated oxazolidinone, affording (2S,3S)-2-(3-((tert-butyldiphenylsilyl)oxy)propyl)-3-methylpent-4-ynoic acid in ∼30% yield over 8 steps. Two variants for ring A, 2-tert-butoxycarbonyl-3-Br/H-5-iodo-4-methylpyrrole, were prepared via the Barton-Zard route. Dihydrodipyrrin formation from the pyrrole and pentynoic acid entailed Jacobi Pd-mediated lactone formation, Petasis methenylation, and Paal-Knorr-type pyrroline formation. The two AD-dihydrodipyrrins bear the D-ring methyl and protected propanol groups with a stereochemical configuration identical to that of native (bacterio)chlorophylls, and a bromine or no substitution in ring A corresponding to the 3-position of (bacterio)chlorophylls. The analogous β-position of a lactone-pyrrole intermediate on the path to the dihydrodipyrrin also was successfully brominated, opening opportunities for late-stage diversification in the synthesis of (bacterio)chlorophylls.
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Affiliation(s)
- Pengzhi Wang
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
| | - Jonathan S Lindsey
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, United States
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Kaneda K. [Synthesis of Cyclic Compounds Containing Aminobenzenesulfonamide]. YAKUGAKU ZASSHI 2020; 140:1087-1094. [PMID: 32879240 DOI: 10.1248/yakushi.20-00139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This review, based on my research work, introduces and summarizes the synthesis and characterization of novel cyclic compounds containing aminobenzenesulfonamide. The review discusses the (1) development of sequential Nicholas and Pauson-Khand reactions for the synthesis of unique polyheterocyclic compounds, (2) production of 2-aminobenzenesulfonamide-containing cyclononyne (ABSACN) as a multifunctional click cycloalkyne agent, and (3) improvement of the intramolecular Pauson-Khand reaction of the nitroarene-enyne substrate for the synthesis of cyclopenta[c]piperidine alkaloids. This research work will facilitate the discovery of sulfonamide or sultam-based functional molecules and pharmaceuticals. Thus, I believe that aminobenzenesulfonamide derivatives are versatile and valuable chemical moieties not only in organic syntheses but also in the pharmaceutical industry. If you are interested in the details of this topic, please refer to the original papers.
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Affiliation(s)
- Kyosuke Kaneda
- Faculty of Pharmaceutical Sciences, Hokkaido University of Science
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Zirngast M, Marschner C, Baumgartner J. Spectroscopic and Structural Study of Some Oligosilanylalkyne Complexes of Cobalt, Molybdenum and Nickel. Molecules 2019; 24:molecules24010205. [PMID: 30626049 PMCID: PMC6337173 DOI: 10.3390/molecules24010205] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Revised: 12/23/2018] [Accepted: 12/27/2018] [Indexed: 11/16/2022] Open
Abstract
Metal induced stabilization of α-carbocations is well known for cobalt- and molybdenum complexed propargyl cations. The same principle also allows access to reactivity enhancement of metal coordinated halo- and hydrosilylalkynes. In a previous study, we have shown that coordination of oligosilanylalkynes to the dicobalthexacarbonyl fragment induces striking reactivity to the oligosilanyl part. The current paper extends this set of oligosilanylalkyne complexes to a number of new dicobalthexacarbonyl complexes but also to 1,2-bis(cyclopentadienyl)tetracarbonyldimolybdenum and (dippe)Ni complexes. NMR-Spectroscopic and crystallographic analysis of the obtained complexes clearly show that the dimetallic cobalt and molybdenum complexes cause rehybridization of the alkyne carbon atoms to sp3, while in the nickel complexes one π-bond of the alkyne is retained. For the dicobalt and dimolybdenum complexes, strongly deshielded 29Si NMR resonances of the attached silicon atoms indicate enhanced reactivity, whereas the 29Si NMR shifts of the respective nickel complexes are similar to that of respective vinylsilanes.
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Affiliation(s)
- Michaela Zirngast
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria.
| | - Christoph Marschner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria.
| | - Judith Baumgartner
- Institut für Anorganische Chemie, Technische Universität Graz, Stremayrgasse 9, A-8010 Graz, Austria.
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Lyapunova AG, Danilkina NA, Rumyantsev AM, Khlebnikov AF, Chislov MV, Starova GL, Sambuk EV, Govdi AI, Bräse S, Balova IA. Relative Reactivity of Benzothiophene-Fused Enediynes in the Bergman Cyclization. J Org Chem 2018; 83:2788-2801. [DOI: 10.1021/acs.joc.7b03258] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Anna G. Lyapunova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Natalia A. Danilkina
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Andrey M. Rumyantsev
- Department
of Genetics and Biotechnology, Saint Petersburg State University (SPbSU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - A. F. Khlebnikov
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Mikhail V. Chislov
- Research
Centre for Thermogravimetric and Calorimetric Research, St. Petersburg State University, Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Galina L. Starova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Elena V. Sambuk
- Department
of Genetics and Biotechnology, Saint Petersburg State University (SPbSU), Universitetskaya nab. 7/9, 199034 Saint Petersburg, Russia
| | - Anastasia I. Govdi
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
| | - Stefan Bräse
- Institute
of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany
- Institute
of Toxicology and Genetics (ITG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
| | - Irina A. Balova
- Institute
of Chemistry, Saint Petersburg State University (SPbSU), Universitetskaya
nab. 7/9, 199034 Saint Petersburg, Russia
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Miranda S, Lobo F, Gomez AM, Lopez JC. Ferrier-Nicholas Cations from C-3-Alkynylglycals: Access to C-3-Branched Allylic Glycosides and Ring-Opening Derivatives. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700189] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Silvia Miranda
- Department of Bio-Organic Chemistry; Instituto de Química Orgánica General (IQOG-CSIC); Juan de la Cierva 3 28006 Madrid Spain
| | - Fernando Lobo
- Department of Bio-Organic Chemistry; Instituto de Química Orgánica General (IQOG-CSIC); Juan de la Cierva 3 28006 Madrid Spain
| | - Ana M. Gomez
- Department of Bio-Organic Chemistry; Instituto de Química Orgánica General (IQOG-CSIC); Juan de la Cierva 3 28006 Madrid Spain
| | - J. Cristobal Lopez
- Department of Bio-Organic Chemistry; Instituto de Química Orgánica General (IQOG-CSIC); Juan de la Cierva 3 28006 Madrid Spain
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10
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Grice KA. Carbon dioxide reduction with homogenous early transition metal complexes: Opportunities and challenges for developing CO 2 catalysis. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.01.007] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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