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Horchar AH, Dean JE, Lake AR, Carsley JE, Lillevig TR, Liu S, Petersen KS. Synthesis of Lactams via a Chiral Phosphoric Acid-Catalyzed Aniline Cyclization. J Org Chem 2024; 89:12725-12738. [PMID: 39120519 PMCID: PMC11382273 DOI: 10.1021/acs.joc.4c01060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/10/2024]
Abstract
The enantioenriched lactams disclosed in this work are synthesized concisely in four steps. In the penultimate reaction, a benzylamine species complexes with a chiral phosphoric acid to produce benzo-fused δ-lactams equipped with an all-carbon quaternary stereocenter. Partial and full reductions were carried out on the ester and amide moieties, and a Suzuki-Miyaura cross-coupling expanded the molecule from the aromatic ring. Finally, our method was successful at a >1 g scale, indicating that the method has important practical use.
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Affiliation(s)
- Abigail H Horchar
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, 301 McIver Street, Greensboro, North Carolina 27412, United States
| | - Jonathan E Dean
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, 301 McIver Street, Greensboro, North Carolina 27412, United States
| | - Alexander R Lake
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, 301 McIver Street, Greensboro, North Carolina 27412, United States
| | - Jessica E Carsley
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, 301 McIver Street, Greensboro, North Carolina 27412, United States
| | - Tiana R Lillevig
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, 301 McIver Street, Greensboro, North Carolina 27412, United States
| | - Shubin Liu
- Department of Chemistry, The University of North Carolina at Chapel Hill, 125 South Road, Chapel Hill, North Carolina 27514, United States
| | - Kimberly S Petersen
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, 301 McIver Street, Greensboro, North Carolina 27412, United States
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Natsutani I, Iwata R, Yamai Y, Ishida K, Nagaoka Y, Sumiyoshi T. Design, synthesis and evaluations of spiro‐fused benzoxaborin derivatives as novel boron‐containing compounds. Chem Biol Drug Des 2019; 93:657-665. [DOI: 10.1111/cbdd.13496] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Revised: 01/15/2019] [Accepted: 01/19/2019] [Indexed: 02/06/2023]
Affiliation(s)
- Itaru Natsutani
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Riyo Iwata
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Yu‐suke Yamai
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Kyoji Ishida
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Yasuo Nagaoka
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
| | - Takaaki Sumiyoshi
- Department of Life Science and BiotechnologyFaculty of Chemistry, Materials and BioengineeringKansai University Suita Osaka Japan
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Sumiyoshi T, Ishida K, Shimizu M, Yamai YS, Natsutani I, Uesato S, Nagaoka Y. Asymmetric Synthesis of t-Butyl 3-Alkyl-oxindole-3-carboxylates via Chiral Phosphoric Acid Catalyzed Desymmetrization of Di-t-butyl 2-Alkyl-2-(2-aminophenyl)malonates. HETEROCYCLES 2019. [DOI: 10.3987/com-18-s(f)87] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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