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Kutateladze DA, Mai BK, Dong Y, Zhang Y, Liu P, Buchwald SL. Stereoselective Synthesis of Trisubstituted Alkenes via Copper Hydride-Catalyzed Alkyne Hydroalkylation. J Am Chem Soc 2023; 145:17557-17563. [PMID: 37540777 PMCID: PMC10569085 DOI: 10.1021/jacs.3c06479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/06/2023]
Abstract
Alkenes are ubiquitous in organic chemistry, yet many classes of alkenes remain challenging to access by current synthetic methodology. Herein, we report a copper hydride-catalyzed approach for the synthesis of Z-configured trisubstituted alkenes with high stereo- and regioselectivity via alkyne hydroalkylation. A DTBM-dppf-supported Cu catalyst was found to be optimal, providing a substantial increase in product yield compared to reactions conducted with dppf as the ligand. DFT calculations show that the DTBM substitution leads to the acceleration of alkyne hydrocupration through combined ground and transition state effects related to preventing catalyst dimerization and enhancing catalyst-substrate dispersion interactions, respectively. Alkyne hydroalkylation was successfully demonstrated with methyl and larger alkyl tosylate electrophiles to produce a variety of (hetero)aryl-substituted alkenes in moderate to high yields with complete selectivity for the Z stereochemically configured products. In the formation of the key C-C bond, computational studies revealed a direct SN2 pathway for alkylation of the vinylcopper intermediate with in situ-formed alkyl iodides.
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Affiliation(s)
- Dennis A Kutateladze
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Binh Khanh Mai
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Yuyang Dong
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Yu Zhang
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, Pittsburgh, Pennsylvania 15260, United States
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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Blackburn MAS, Wagen CC, Bodrogean MR, Tadross PM, Bendelsmith AJ, Kutateladze DA, Jacobsen EN. Dual-Hydrogen-Bond Donor and Brønsted Acid Cocatalysis Enables Highly Enantioselective Protio-Semipinacol Rearrangement Reactions. J Am Chem Soc 2023. [PMID: 37428959 PMCID: PMC10387361 DOI: 10.1021/jacs.3c02960] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/12/2023]
Abstract
A catalytic protio-semipinacol ring-expansion reaction has been developed for the highly enantioselective conversion of tertiary vinylic cyclopropyl alcohols into cyclobutanone products bearing α-quaternary stereogenic centers. The method relies on the cocatalytic effect of a chiral dual-hydrogen-bond donor (HBD) with hydrogen chloride. Experimental evidence is provided for a stepwise mechanism where protonation of the alkene generates a short-lived, high-energy carbocation, which is followed by C-C bond migration to deliver the enantioenriched product. This research applies strong acid/chiral HBD cocatalysis to weakly basic olefinic substrates and lays the foundation for further investigations of enantioselective reactions involving high-energy cationic intermediates.
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Affiliation(s)
- Melanie A S Blackburn
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Corin C Wagen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - M Raul Bodrogean
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Pamela M Tadross
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Andrew J Bendelsmith
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Dennis A Kutateladze
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
| | - Eric N Jacobsen
- Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, United States
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Abril YLN, Fernandez IR, Hong JY, Chiang YL, Kutateladze DA, Zhao Q, Yang M, Hu J, Sadhukhan S, Li B, He B, Remick B, Bai JJ, Mullmann J, Wang F, Maymi V, Dhawan R, Auwerx J, Southard T, Cerione RA, Lin H, Weiss RS. Pharmacological and genetic perturbation establish SIRT5 as a promising target in breast cancer. Oncogene 2021; 40:1644-1658. [PMID: 33479498 PMCID: PMC7935767 DOI: 10.1038/s41388-020-01637-w] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 12/12/2020] [Accepted: 12/18/2020] [Indexed: 12/14/2022]
Abstract
SIRT5 is a member of the sirtuin family of NAD+-dependent protein lysine deacylases implicated in a variety of physiological processes. SIRT5 removes negatively charged malonyl, succinyl, and glutaryl groups from lysine residues and thereby regulates multiple enzymes involved in cellular metabolism and other biological processes. SIRT5 is overexpressed in human breast cancers and other malignancies, but little is known about the therapeutic potential of SIRT5 inhibition for treating cancer. Here we report that genetic SIRT5 disruption in breast cancer cell lines and mouse models caused increased succinylation of IDH2 and other metabolic enzymes, increased oxidative stress, and impaired transformation and tumorigenesis. We therefore developed potent, selective, and cell permeable small molecule SIRT5 inhibitors. SIRT5 inhibition suppressed the transformed properties of cultured breast cancer cells and significantly reduced mammary tumor growth in vivo, in both genetically engineered and xenotransplant mouse models. Considering that Sirt5 knockout mice are generally normal, with only mild phenotypes observed, these data establish SIRT5 as a promising target for treating breast cancer. The new SIRT5 inhibitors provide useful probes for future investigations of SIRT5 and an avenue for targeting SIRT5 as a therapeutic strategy.
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Affiliation(s)
| | - Irma R Fernandez
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14853, USA.,Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Jun Young Hong
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Ying-Ling Chiang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Dennis A Kutateladze
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Qingjie Zhao
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Min Yang
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Jing Hu
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Sushabhan Sadhukhan
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - Bo Li
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA.,Department of Molecular Medicine, Cornell University, Ithaca, NY, 14853, USA
| | - Bin He
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA.,School of Pharmacy, Guizhou Medical University, Guiyang, 550004, China
| | - Brenna Remick
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14853, USA
| | - Jessica Jingyi Bai
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA
| | - James Mullmann
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14853, USA.,Department of Molecular Medicine, Cornell University, Ithaca, NY, 14853, USA
| | - Fangyu Wang
- Department of Molecular Medicine, Cornell University, Ithaca, NY, 14853, USA
| | - Viviana Maymi
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14853, USA
| | - Ravi Dhawan
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14853, USA
| | - Johan Auwerx
- Laboratory for Integrative Systems Physiology, Institute of Bioengineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
| | - Teresa Southard
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14853, USA
| | - Richard A Cerione
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA.,Department of Molecular Medicine, Cornell University, Ithaca, NY, 14853, USA
| | - Hening Lin
- Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA. .,Howard Hughes Medical Institute; Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, 14853, USA.
| | - Robert S Weiss
- Department of Biomedical Sciences, Cornell University, Ithaca, NY, 14853, USA.
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