Total syntheses of FR900482

Hidetoshi Tokuyama, Masashi Suzuki, Tohru Fukuyama

Research output: Contribution to journalReview articlepeer-review

5 Citations (Scopus)


This review focuses on total syntheses of antitumor antibiotic FR 900482. After a brief discussion of synthetic problems of this compound, the first racemic total synthesis of FR 900482 by Fukuyama is described, which provided some important insights for the designing synthetic route through the 8-membered N-hydroxybenzazocinone key intermediate. Then, recently disclosed total syntheses as well as formal total syntheses and synthesis of derivatives were described including Martin's formal total synthesis utilizing the Grubbs' olefin metathesis for the formation of benzazocin ring, Ciufolini's characteristic formation of benzazocin ring by a sequential reaction (intramolecular [1,3]-dipolar cycloaddition of azide, photomediated conversion of triazorine to aziridine, and a fragmentation initiated by a homo-Brook rearrangement), Williams' total synthesis employing an intramolecular reductive animation to construct the benzazocin ring and an unusual deprotective oxidation of N-PMB group to form hydroxylamine, Paleo and Rapoport's formal synthesis taking convergent route using an epoxy α-amino acid segment derived from vinylglycin, and Fukuyama's synthetic approach using intramolecular [3+2] cycloaddition of nitrone and enantiospecific total synthesis utilizing a novel ketone synthesis and reductive intramolecular hydroxyamination.

Original languageEnglish
Pages (from-to)470-480
Number of pages11
JournalYuki Gosei Kagaku Kyokaishi/Journal of Synthetic Organic Chemistry
Issue number5
Publication statusPublished - 2007 May


  • Aldol reaction
  • Benzazocin
  • FR 900482
  • Hemiacetal
  • Hydroxylamine
  • Intramolecular cycloaddition
  • Medium-sized ring
  • Total synthesis


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