| Summary: | 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 <i>N</i>-6 of 4-amino-5-cyano-6-bromo-pyrrolo[2,3-<i>d</i>]pyrimidine, a Vorbrüggen glycosylation with 1,2,3-tri-<i>O</i>-acetyl-5-deoxy-β-D-ribofuranose afforded a completely regioselective <i>N</i>-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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