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Ungarean CN, Galer P, Zhang Y, Lee KS, Ngai JM, Lee S, Liu P, Sarlah D. Synthesis of (+)-ribostamycin by catalytic, enantioselective hydroamination of benzene. NATURE SYNTHESIS 2022; 1:542-547. [PMID: 36213185 PMCID: PMC9536474 DOI: 10.1038/s44160-022-00080-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 04/13/2022] [Indexed: 05/09/2023]
Abstract
Aminoglycosides (AGs) represent a large group of pseudoglycoside natural products, in which several different sugar moieties are harnessed to an aminocyclitol core. AGs constitute a major class of antibiotics that target the prokaryotic ribosome of many problematic pathogens. Hundreds of AGs have been isolated to date, with 1,3-diaminocyclohexanetriol, known as 2-deoxystreptamine (2-DOS), being the most abundant aglycon core. However, owning to their diverse and complex architecture, all AG-based drugs are either natural substances or analogues prepared by late-stage modifications. Synthetic approaches to AGs are rare and lengthy; most studies involve semi-synthetic reunion of modified fragments. Here we report a bottom-up chemical synthesis of the 2-DOS-based AG antibiotic ribostamycin, which proceeds in ten linear operations from benzene. A key enabling transformation involves a Cu-catalyzed, enantioselective, dearomative hydroamination, which set the stage for the rapid and selective introduction of the remaining 2-DOS heteroatom functionality. This work demonstrates how the combination of a tailored, dearomative logic and strategic use of subsequent olefin functionalizations can provide practical and concise access to the AG class of compounds.
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Affiliation(s)
- Chad N Ungarean
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois, United States
| | - Petra Galer
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois, United States
| | - Yu Zhang
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Ken S Lee
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois, United States
| | - Justin M Ngai
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois, United States
| | - Sungjong Lee
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - David Sarlah
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois, United States
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Chapter 12. Aminocyclitol and Other Antibiotics. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 1977. [DOI: 10.1016/s0065-7743(08)61550-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register]
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