1
|
Chowdhury R, Dubey AK, Ghosh R. Synthesis of Functionalized Organosilicon Compounds/Distal Ketones via Ring-Opening Giese Addition of Cycloalkanols under Organophotocatalytic Conditions. J Org Chem 2024; 89:7187-7200. [PMID: 38669476 DOI: 10.1021/acs.joc.4c00600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024]
Abstract
Visible-light-induced organophotocatalyzed ring-opening followed by remote Giese addition of tertiary cycloalkanols with β-silylmethylene malonates has been developed under mild reaction conditions for the synthesis of organosilicon compounds, bearing a ketone group distally substituted with a silyl group with an additional dialkyl malonate functional handle in moderate to good yields (34-72%). The protocol also worked well with diverse Michael acceptors, such as alkylidene/benzylidene malonates, trifluoro methylidene malonate, benzylidene malononitrile, α-cyano-enone, and α-cyano vinyl sulfone, and delivered desired valuable distally functionalized ketones. To showcase the potential of the method, various synthetic transformations of the obtained product were also demonstrated.
Collapse
Affiliation(s)
- Raghunath Chowdhury
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Akhil K Dubey
- Bio-Organic Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Rajib Ghosh
- Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| |
Collapse
|
2
|
Pérez Sevillano R, Ferreira F, Jackowski O. Transition-Metal-Free Synthesis of Enantioenriched Tertiary and Quaternary α-Chiral Allylsilanes. Chemistry 2023; 29:e202302227. [PMID: 37489288 DOI: 10.1002/chem.202302227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 07/26/2023]
Abstract
Access to enantioenriched tertiary and quaternary α-chiral allysilanes without any transition-metal catalyst is reported. This was achieved by enantioselective allylic displacement of γ-silylated allylic bromides through Lewis base activation of Grignard reagents by a bidentate chiral NHC ligand. The process afforded both high γ-regio- and enantioselectivity and is compatible with a wide range of silyl groups on the substrates.
Collapse
Affiliation(s)
- Rubén Pérez Sevillano
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire IPCM, 4 place Jussieu, F-75005, Paris, France
| | - Franck Ferreira
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire IPCM, 4 place Jussieu, F-75005, Paris, France
| | - Olivier Jackowski
- Sorbonne Université, CNRS, Institut Parisien de Chimie Moléculaire IPCM, 4 place Jussieu, F-75005, Paris, France
| |
Collapse
|
3
|
Bourkhis M, Gaspard H, Rullière P, de Almeida DKC, Listunov D, Joly E, Abderrahim R, de Mattos MC, de Oliveira MCF, Maraval V, Chauvin R, Génisson Y. Skeletal Optimization of Cytotoxic Lipidic Dialkynylcarbinols. ChemMedChem 2018; 13:1124-1130. [PMID: 29603643 DOI: 10.1002/cmdc.201800118] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 03/22/2018] [Indexed: 11/07/2022]
Abstract
In line with a recent study of the pharmacological potential of bioinspired synthetic acetylenic lipids, after identification of the terminal dialkynylcarbinol (DAC) and butadiynyl alkynylcarbinol (BAC) moieties as functional antitumor pharmacophoric units, this work specifically addresses the issue of carbon backbone length. A systematic variation of the aliphatic chain length was thus carried out in both the DAC and BAC series. The critical impact of the length of the lipidic skeleton was first confirmed in the racemic series, with the highest cytotoxic activity observed for C17 to C18 backbones. Enantiomerically enriched samples were prepared by asymmetric synthesis of the optimal C18 DAC and C17 BAC derivatives. Samples with upgraded enantiomeric purity were alternatively produced by enzymatic kinetic resolution. Eutomers possessing the S configuration displayed cytotoxicity IC50 values as low as 15 nm against HCT116 cancer cells, the highest level of activity reached to date in this series.
Collapse
Affiliation(s)
- Maroua Bourkhis
- SPCMIB, UMR-CNRS 5068, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, 31062, Toulouse Cedex 9, France.,05/UR/13-01, LPMLNMH, Carthage University, Faculty of Sciences of Bizerte, 7021, Jarzouna, Tunisia
| | - Hafida Gaspard
- SPCMIB, UMR-CNRS 5068, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, 31062, Toulouse Cedex 9, France
| | - Pauline Rullière
- SPCMIB, UMR-CNRS 5068, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, 31062, Toulouse Cedex 9, France
| | - Diana K C de Almeida
- Laboratory of Biotechnology and Organic Synthesis, Federal University of Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Dymytrii Listunov
- SPCMIB, UMR-CNRS 5068, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, 31062, Toulouse Cedex 9, France.,LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Etienne Joly
- Institute of Pharmacology and Structural Biology, UMR5089 CNRS/UPS, Department of Structural Biology and Biophysics, Université Paul Sabatier-Toulouse III, 205 route de Narbonne, 31077, Toulouse Cedex 4, France
| | - Raoudha Abderrahim
- 05/UR/13-01, LPMLNMH, Carthage University, Faculty of Sciences of Bizerte, 7021, Jarzouna, Tunisia
| | - Marcos C de Mattos
- Laboratory of Biotechnology and Organic Synthesis, Federal University of Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Maria C F de Oliveira
- Laboratory of Biotechnology and Organic Synthesis, Federal University of Ceará, Campus do Pici, Fortaleza, Ceará, Brazil
| | - Valérie Maraval
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Remi Chauvin
- LCC-CNRS, Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Yves Génisson
- SPCMIB, UMR-CNRS 5068, Université Paul Sabatier-Toulouse III, 118 route de Narbonne, 31062, Toulouse Cedex 9, France
| |
Collapse
|
4
|
Liu T, Tian L, Lai J, Min D, Qu M, Tang S. Alcohol-mediated direct dithioacetalization of alkynes with 2-chloro-1,3-dithiane for the synthesis of Markovnikov dithianes. Org Biomol Chem 2017; 15:4068-4071. [PMID: 28443876 DOI: 10.1039/c7ob00795g] [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
An alcohol-mediated dithioacetalization process that gains direct access to the corresponding Markovnikov-selective 1,3-dithianes using unactivated alkynes and nonthiolic/odorless 2-chloro-1,3-dithiane in a highly efficient manner has been developed. This methodology has the advantage of having mild reaction conditions, and the dithioacetalization process gives good to excellent yields with high Markovnikov-selectivity.
Collapse
Affiliation(s)
- Teng Liu
- School of Pharmacy and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China.
| | | | | | | | | | | |
Collapse
|
5
|
Misra S, Chauhan AK, Srivastava RC, Butcher RJ, Duthie A. Electrophilic addition/substitution of an alkynyl methyl ketone with tellurium tetrahalides: A novel synthetic approach to telluracyclopentenones. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
6
|
Liu T, Min D, Liang Y, Yuan X, Zhang Y, Liu J, Tang S. Regiodivergent radical oxidative coupling of vinyl ethers with dithiane by copper or iron catalysis. Org Chem Front 2017. [DOI: 10.1039/c7qo00422b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Direct regioselective C–H dithioacetalization of readily available vinyl ethers to yield a variety of substituted dithianes under a copper or iron catalysis has been developed.
Collapse
Affiliation(s)
- Teng Liu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Deng Min
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yongping Liang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xinyu Yuan
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jian Liu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shouchu Tang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
- State Key Laboratory of Applied Organic Chemistry
| |
Collapse
|
7
|
Kurosawa F, Nakano T, Soeta T, Endo K, Ukaji Y. (Z)-Selective Enol Triflation of α-Alkoxyacetoaldehydes: Application to Synthesis of (Z)-Allylic Alcohols via Cross-Coupling Reaction and [1,2]-Wittig Rearrangement. J Org Chem 2015; 80:5696-703. [PMID: 25970239 DOI: 10.1021/acs.joc.5b00647] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The stereoselective transformation of α-alkoxyacetoaldehydes to the corresponding (Z)-vinyl triflates was achieved by treatment with phenyl triflimide and DBU. The stereochemistry was explained by the "syn-effect," which was attributed primarily to an σ → π* interaction. The β-alkoxy vinyl triflates obtained were applied to the stereoselective synthesis of structurally diverse (Z)-allylic alcohols via transition metal-catalyzed cross-coupling reaction and [1,2]-Wittig rearrangement.
Collapse
Affiliation(s)
- Fumiya Kurosawa
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Takeo Nakano
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Takahiro Soeta
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Kohei Endo
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| | - Yutaka Ukaji
- Division of Material Chemistry, Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1192, Japan
| |
Collapse
|
8
|
Thaharn W, Soorukram D, Kuhakarn C, Tuchinda P, Pakawatchai C, Saithong S, Reutrakul V, Pohmakotr M. Asymmetric Synthesis of gem-Difluoromethylenated Linear Triquinanes via Cascade gem-Difluoroalkyl Radical Cyclization. J Org Chem 2014; 80:816-27. [DOI: 10.1021/jo5022579] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Watcharaporn Thaharn
- Center
of Excellence for Innovation in Chemistry (PERCH−CIC) and Department
of Chemistry Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Darunee Soorukram
- Center
of Excellence for Innovation in Chemistry (PERCH−CIC) and Department
of Chemistry Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Chutima Kuhakarn
- Center
of Excellence for Innovation in Chemistry (PERCH−CIC) and Department
of Chemistry Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Patoomratana Tuchinda
- Center
of Excellence for Innovation in Chemistry (PERCH−CIC) and Department
of Chemistry Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Chaveng Pakawatchai
- Center
of Excellence for Innovation in Chemistry (PERCH−CIC) and Department
of Chemistry Faculty of Science, Prince of Songkla University, Hat Yai,
Songkla 90112, Thailand
| | - Saowanit Saithong
- Center
of Excellence for Innovation in Chemistry (PERCH−CIC) and Department
of Chemistry Faculty of Science, Prince of Songkla University, Hat Yai,
Songkla 90112, Thailand
| | - Vichai Reutrakul
- Center
of Excellence for Innovation in Chemistry (PERCH−CIC) and Department
of Chemistry Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| | - Manat Pohmakotr
- Center
of Excellence for Innovation in Chemistry (PERCH−CIC) and Department
of Chemistry Faculty of Science, Mahidol University, Rama VI Road, Bangkok 10400, Thailand
| |
Collapse
|
9
|
Cao T, Linton EC, Deitch J, Berritt S, Kozlowski MC. Copper(II)- and palladium(II)-catalyzed enantioselective Claisen rearrangement of allyloxy- and propargyloxy-indoles to quaternary oxindoles and spirocyclic lactones. J Org Chem 2012; 77:11034-55. [PMID: 23167569 PMCID: PMC3528852 DOI: 10.1021/jo302039n] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In this Article, a strategy to obtain highly enantioselective catalysts for the Claisen rearrangement of allyloxy- and propargyloxy-indoles is outlined. Ultimately, copper BOX and palladium BINAP or PHOX catalysts were discovered as superior in catalyzing Claisen rearrangements of allyloxy- or proparyloxy-substituted indoles to generate oxindoles bearing allyl- or allenyl-substituted quaternary centers. This method proved to be tolerant of a broad range of functional groups. Tandem reactions of the silyl-allene products provide rapid access to a variety of spirocyclic oxindoles in one operation.
Collapse
Affiliation(s)
- Trung Cao
- Department of Chemistry and Penn-Merck High Throughput Experimentation Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Elizabeth C. Linton
- Department of Chemistry and Penn-Merck High Throughput Experimentation Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Joshua Deitch
- Department of Chemistry and Penn-Merck High Throughput Experimentation Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Simon Berritt
- Department of Chemistry and Penn-Merck High Throughput Experimentation Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| | - Marisa C. Kozlowski
- Department of Chemistry and Penn-Merck High Throughput Experimentation Laboratory, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, United States
| |
Collapse
|
10
|
Buniuchi K, Oriyama T. Development of Catalyst-free Reactions Utilizing Characteristic Property of DMSO in the Presence of MS 4A. J SYN ORG CHEM JPN 2012. [DOI: 10.5059/yukigoseikyokaishi.70.1041] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|