Dong X, Tang J, Hu C, Bai J, Ding H, Xiao Q. An Expeditious Total Synthesis of 5'-Deoxy-toyocamycin and 5'-Deoxysangivamycin.
Molecules 2019;
24:molecules24040737. [PMID:
30791372 PMCID:
PMC6413189 DOI:
10.3390/molecules24040737]
[Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 02/15/2019] [Accepted: 02/16/2019] [Indexed: 01/28/2023] Open
Abstract
In present paper, an expeditious total synthesis of naturally occurring 5′-deoxytoyocamycin and 5′-deoxysangivamycin was accomplished. Because of the introduction of a benzoyl group at N-6 of 4-amino-5-cyano-6-bromo-pyrrolo[2,3-d]pyrimidine, a Vorbrüggen glycosylation with 1,2,3-tri-O-acetyl-5-deoxy-β-D-ribofuranose afforded a completely regioselective N-9 glycosylation product, which is unambiguously confirmed by X-ray diffraction analysis. All of the involved intermediates were well characterized by various spectra.
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