|
1
|
Mai WP, Liu Y, Sui HD, Xiao YM, Mao P, Lu K. A Novel Ketonitrile Synthesis by Palladium-Catalyzed Carbonylative Coupling Reactions of Amides with Arylboronic Acids. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Wen-Peng Mai
- School of Materials and Chemical Engineering; Henan University of Engineering; 450006 Zhengzhou China
- School of Chemistry and Chemical Engineering; Henan University of Technology; 450001 Zhengzhou China
| | - Yang Liu
- School of Chemistry and Chemical Engineering; Henan University of Technology; 450001 Zhengzhou China
| | - Hong-Dai Sui
- School of Chemistry and Chemical Engineering; Henan University of Technology; 450001 Zhengzhou China
| | - Yong-Mei Xiao
- School of Chemistry and Chemical Engineering; Henan University of Technology; 450001 Zhengzhou China
| | - Pu Mao
- School of Chemistry and Chemical Engineering; Henan University of Technology; 450001 Zhengzhou China
| | - Kui Lu
- School of Materials and Chemical Engineering; Henan University of Engineering; 450006 Zhengzhou China
- School of Chemistry and Chemical Engineering; Henan University of Technology; 450001 Zhengzhou China
- School of Chemical Engineering and Food Science; Zhengzhou Institute of Technology; 450044 Zhengzhou China
| |
Collapse
|
|
2
|
Frichert A, Jones PG, Brönstrup M, Lindel T. Oxidation of the Meroterpenoid (-)-Terreumol C from the Mushroom Tricholoma terreum: Discovery of Cytotoxic Analogues. JOURNAL OF NATURAL PRODUCTS 2017; 80:2652-2658. [PMID: 28956915 DOI: 10.1021/acs.jnatprod.7b00236] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Aiming at the discovery of new cytotoxic meroterpenoids, the chemical reactivity of the natural product (-)-terreumol C from the edible mushroom Tricholoma terreum was investigated. A series of high-yielding oxygenations and brominations at the 10-membered ring were discovered. The regioselectivity of hydroxylation could be guided by installing protecting groups at the hydroquinone section. Dihydroxylation led to the stereoselective formation of a novel tricycle containing an 11-oxabicyclo[5.3.1]undecane system. Several of the compounds proved to be as cytotoxic against cancer cell lines as the natural products terreumols A and C in the single-digit micromolar range. Interestingly, functionalization of the southern rim formed by carbons C5-C6-C7-C8 is tolerated without much loss of cytotoxicity.
Collapse
Affiliation(s)
- Alex Frichert
- Institute of Organic Chemistry, Technical University Braunschweig , Hagenring 30, 38106 Braunschweig, Germany
| | - Peter G Jones
- Institute of Inorganic and Analytical Chemistry, Technical University Braunschweig , Hagenring 30, 38106 Braunschweig, Germany
| | - Mark Brönstrup
- Helmholtz Centre for Infection Research and German Center for Infection Research (DZIF) , Inhoffenstraße 7, 38124 Braunschweig, Germany
| | - Thomas Lindel
- Institute of Organic Chemistry, Technical University Braunschweig , Hagenring 30, 38106 Braunschweig, Germany
| |
Collapse
|
|
3
|
Mendoza-Sanchez R, Corless VB, Nguyen QNN, Bergeron-Brlek M, Frost J, Adachi S, Tantillo DJ, Yudin AK. Cyclols Revisited: Facile Synthesis of Medium-Sized Cyclic Peptides. Chemistry 2017; 23:13319-13322. [PMID: 28771904 DOI: 10.1002/chem.201703616] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Indexed: 12/21/2022]
Abstract
Medium-sized rings, particularly the corresponding cyclic peptides, are challenging synthetic targets. In the present study, we report an approach to medium-sized cyclic peptides through targeted formation and collapse of cyclol intermediates. This methodology operates on β-amino imides derived from 2,5-diketopiperazines and offers a straightforward transition from frequently examined scaffolds in drug discovery to a rarely visited class of medium-sized rings.
Collapse
Affiliation(s)
- Rodrigo Mendoza-Sanchez
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Victoria B Corless
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Q Nhu N Nguyen
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, CA, USA
| | - Milan Bergeron-Brlek
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - John Frost
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Shinya Adachi
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Dean J Tantillo
- Department of Chemistry, University of California Davis, 1 Shields Avenue, Davis, CA, USA
| | - Andrei K Yudin
- Davenport Research Laboratories, Department of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| |
Collapse
|