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1
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Wu X, Iwata T, Scharf A, Qin T, Reichl KD, Porco JA. Asymmetric Synthesis of Gonytolide A: Strategic Use of an Aryl Halide Blocking Group for Oxidative Coupling. J Am Chem Soc 2018; 140:5969-5975. [PMID: 29658717 PMCID: PMC5943148 DOI: 10.1021/jacs.8b02535] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The first synthesis of the chromanone lactone dimer gonytolide A has been achieved employing vanadium(V)-mediated oxidative coupling of the monomer gonytolide C. An o-bromine blocking group strategy was employed to favor para- para coupling and to enable kinetic resolution of (±)-gonytolide C. Asymmetric conjugate reduction enabled practical kinetic resolution of a chiral, racemic precursor and the asymmetric synthesis of (+)-gonytolide A and its atropisomer.
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Affiliation(s)
| | | | - Adam Scharf
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - Tian Qin
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - Kyle D. Reichl
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
| | - John A. Porco
- Department of Chemistry and Center for Molecular Discovery (BU-CMD),
Boston University, Boston, Massachusetts 02215, United States
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2
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Zhang Z, Gao X, Yu H, Bi J, Zhang G. Tandem Oxidative α-Hydroxylation/β-Acetalization Reaction of β-Ketoamides and Its Applications. ACS OMEGA 2017; 2:7746-7754. [PMID: 31457331 PMCID: PMC6645376 DOI: 10.1021/acsomega.7b01526] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 10/30/2017] [Indexed: 06/10/2023]
Abstract
A tandem oxidative α-hydroxylation/β-acetalization reaction of β-ketoamides was developed in the presence of PIDA and NaOH. This reaction proceeded at 25 °C in the absence of a metal catalyst to provide 2-hydroxy-3,3-dimethoxy-N-substituted butanamides in good to excellent yields from readily available starting materials. The application of this chemistry to the construction of α-hydroxy-β-ketoamides and quinolinones was also described.
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Affiliation(s)
- Zhiguo Zhang
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
- Jilin
Province Key Laboratory of Organic Functional Molecular Design &
Synthesis, Northeast Normal University, Changchun, Jilin 130024, China
| | - Xiaolong Gao
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
| | - Haifeng Yu
- School
of Chemistry and Life Science, Anshan Normal
University, 33# Ping
An Street, Tiedong District, Anshan, Liaoning 114007, China
| | - Jingjing Bi
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
| | - Guisheng Zhang
- Key
Laboratory of Green Chemical Media and Reactions, Ministry of Education,
School of Chemistry and Chemical Engineering, Henan Key Laboratory
of Organic Functional Molecule and Drug Innovation, Henan Normal University, 46# East of Construction Road, Xinxiang, Henan 453007, China
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3
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Suzue A, Honda H, Kadokura M, Tanaka S, Tukada H. Investigation of New Cooling Systems Based on Complexes of Temperature-Responsive Poly(N-isopropylacrylamide) with Porous Materials. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20140187] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Atsushi Suzue
- Graduate School of Nanobioscience, Yokohama City University
| | - Hisashi Honda
- Graduate School of Nanobioscience, Yokohama City University
| | - Meiko Kadokura
- International College of Arts and Sciences, Yokohama City University
| | - Susumu Tanaka
- Department of Materials Science, Yonago National College of Technology
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4
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Purohit VC, Allwein SP, Bakale RP. Catalytic Oxidative 1,2-Shift in 1,1′-Disubstituted Olefins Using Arene(iodo)sulfonic Acid as the Precatalyst and Oxone as the Oxidant. Org Lett 2013; 15:1650-3. [DOI: 10.1021/ol400432x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Vikram C. Purohit
- Chemical Process Research and Development, Teva Pharmaceuticals, 383 Phoenixville Pike, Malvern, Pennsylvania 19355, United States
| | - Shawn P. Allwein
- Chemical Process Research and Development, Teva Pharmaceuticals, 383 Phoenixville Pike, Malvern, Pennsylvania 19355, United States
| | - Roger P. Bakale
- Chemical Process Research and Development, Teva Pharmaceuticals, 383 Phoenixville Pike, Malvern, Pennsylvania 19355, United States
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