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Gao S, Duan M, Liu J, Yu P, Houk KN, Chen M. Stereochemical Control via Chirality Pairing: Stereodivergent Syntheses of Enantioenriched Homoallylic Alcohols. Angew Chem Int Ed Engl 2021; 60:24096-24106. [PMID: 34608723 DOI: 10.1002/anie.202107004] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Indexed: 12/14/2022]
Abstract
We report herein the development of stereodivergent syntheses of enantioenriched homoallylic alcohols using chiral nonracemic α-CH2 Bpin-substituted crotylboronate. Chiral phosphoric acid (S)-A-catalyzed asymmetric allyl addition with the reagent gave Z-anti-homoallylic alcohols with excellent enantioselectivities and Z-selectivities. When the enantiomeric acid catalyst (R)-A was utilized, the stereoselectivity was completely reversed and E-anti-homoallylic alcohols were obtained with high E-selectivities and excellent enantioselectivities. By pairing the chirality of the boron reagent with the catalyst, two complementary stereoisomers of chiral homoallylic alcohols can be obtained selectively from the same boron reagent. DFT computational studies were conducted to probe the origins of the observed stereoselectivity. These reactions generate highly enantioenriched homoallylic alcohol products that are valuable for rapid construction of polyketide structural frameworks.
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Affiliation(s)
- Shang Gao
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, 36849, USA
| | - Meng Duan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California, 90095, USA.,Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Jiaming Liu
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, 36849, USA
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California, 90095, USA
| | - Ming Chen
- Department of Chemistry and Biochemistry, Auburn University, Auburn, AL, 36849, USA
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Gao S, Duan M, Liu J, Yu P, Houk KN, Chen M. Stereochemical Control via Chirality Pairing: Stereodivergent Syntheses of Enantioenriched Homoallylic Alcohols. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107004] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Shang Gao
- Department of Chemistry and Biochemistry Auburn University Auburn AL 36849 USA
| | - Meng Duan
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles California 90095 USA
- Department of Chemistry and Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Jiaming Liu
- Department of Chemistry and Biochemistry Auburn University Auburn AL 36849 USA
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles California 90095 USA
| | - Ming Chen
- Department of Chemistry and Biochemistry Auburn University Auburn AL 36849 USA
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Kita M, Oka H, Usui A, Ishitsuka T, Mogi Y, Watanabe H, Tsunoda M, Kigoshi H. Total Synthesis of Mycalolides A and B through Olefin Metathesis. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507795] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Masaki Kita
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennodai, Tsukuba 305‐8571 (Japan)
| | - Hirotaka Oka
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennodai, Tsukuba 305‐8571 (Japan)
| | - Akihiro Usui
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennodai, Tsukuba 305‐8571 (Japan)
| | - Tomoya Ishitsuka
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennodai, Tsukuba 305‐8571 (Japan)
| | - Yuzo Mogi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennodai, Tsukuba 305‐8571 (Japan)
| | - Hidekazu Watanabe
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennodai, Tsukuba 305‐8571 (Japan)
| | - Masaki Tsunoda
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennodai, Tsukuba 305‐8571 (Japan)
| | - Hideo Kigoshi
- Graduate School of Pure and Applied Sciences, University of Tsukuba, 1‐1‐1 Tennodai, Tsukuba 305‐8571 (Japan)
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Kita M, Oka H, Usui A, Ishitsuka T, Mogi Y, Watanabe H, Tsunoda M, Kigoshi H. Total Synthesis of Mycalolides A and B through Olefin Metathesis. Angew Chem Int Ed Engl 2015; 54:14174-8. [DOI: 10.1002/anie.201507795] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Indexed: 11/09/2022]
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Nath N, d'Auvergne EJ, Griesinger C. Long-Range Residual Dipolar Couplings: A Tool for Determining the Configuration of Small Molecules. Angew Chem Int Ed Engl 2015; 54:12706-10. [PMID: 26359945 DOI: 10.1002/anie.201504432] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2015] [Revised: 07/14/2015] [Indexed: 11/07/2022]
Abstract
Together with NOE and J coupling, one-bond residual dipolar coupling (RDC), which reports on the three-dimensional orientation of an internuclear vector in the molecular frame, plays an important role in the conformation and configuration analysis of small molecules in solution by NMR spectroscopy. When the molecule has few C-H bonds, or too many bonds are in parallel, the available RDCs may not be sufficient to obtain the alignment tensor used for structure elucidation. Long-range RDCs that connect nuclei over multiple bonds are normally not parallel to the single bonds and therefore complement one-bond RDCs. Herein we present a method for extracting the long-range RDC of a chosen proton or group of protons to all remotely connected carbon atoms, including non-protonated carbon atoms. Alignment tensors fitted directly to the total long-range couplings (T=J+D) enabled straightforward analysis of both the long-range and one-bond RDCs for strychnine.
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Affiliation(s)
- Nilamoni Nath
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen (Germany)
| | - Edward J d'Auvergne
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen (Germany)
| | - Christian Griesinger
- Department of NMR-based Structural Biology, Max Planck Institute for Biophysical Chemistry, 37077 Göttingen (Germany).
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Nath N, d'Auvergne EJ, Griesinger C. Long-Range Residual Dipolar Couplings: A Tool for Determining the Configuration of Small Molecules. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504432] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Xue WJ, Zhang W, Zheng KL, Dai Y, Guo YQ, Li HZ, Gao FF, Wu AX. Formation of 2-Acyloxazoles by a Multipathway Coupled Domino Strategy: One-Pot Metal-Free Oxidative Cyclization Applicable to Various Substrates. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300124] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
A stereoselective total synthesis of the reported structure of goniotrionin (4) has been accomplished. The key steps involved the opening of a chiral epoxide, a highly diastereoselective Mukaiyama aerobic oxidative cyclization, a selective 1,2-syn Mukaiyama aldol reaction, and a Noyori reduction.
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Affiliation(s)
- Luiz C Dias
- Chemistry Institute, State University of Campinas, UNICAMP, 13083-970, C.P. 6154, Campinas, SP, Brazil.
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Schuetz A, Murakami T, Takada N, Junker J, Hashimoto M, Griesinger C. RDC-Enhanced NMR Spectroscopy in Structure Elucidation of Sucro-Neolambertellin. Angew Chem Int Ed Engl 2008; 47:2032-4. [DOI: 10.1002/anie.200705037] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Schuetz A, Murakami T, Takada N, Junker J, Hashimoto M, Griesinger C. RDC-Enhanced NMR Spectroscopy in Structure Elucidation of Sucro-Neolambertellin. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200705037] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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