Total synthesis of C-glycosylangucycline, urdamycinone B, using an unprotected sugar

Goh Matsuo, Yuko Miki, Masaya Nakata, Shuichi Matsumura, Kazunobu Toshima

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47 Citations (Scopus)


The total synthesis of urdamycinone B (1), a prototypical member of the C-glycosylangucycline antibiotics, was achieved by a novel and effective strategy without any protecting group in the sugar moiety. The unprotected C- glycosyljuglone 6 was effectively synthesized by the aryl C-glycosidation of 1,5-naphthalenediol (16) with the totally unprotected D-olivose (8) and the subsequent regioselective photooxygenation of the resultant C- glycosylnaphthalenediol 17. On the other hand, the diene 7 was prepared from 3-methyl-2-cyclohexen-1-one (9) in a short step via the cross-coupling of the vinyl triflate 20 and vinylbutyltin (21) and the Wittig reaction of the aldehyde 24 and the phosphine 25. Finally, the regioselective Diels-Alder reaction of the unprotected C-glycosyljuglone 6 and the diene 7, followed by the regioselecitive introduction of the ketone function at the C1 position, led to the total synthesis of 1.

Original languageEnglish
Pages (from-to)7101-7106
Number of pages6
JournalJournal of Organic Chemistry
Issue number19
Publication statusPublished - 1999 Sept 17

ASJC Scopus subject areas

  • Organic Chemistry


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