Synthesis and Stereochemical Revision of the C31–C67 Fragment of Amphidinol 3

Yuma Wakamiya, Makoto Ebine, Mariko Murayama, Hiroyuki Omizu, Nobuaki Matsumori, Michio Murata, Tohru Oishi

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


Amphidinol 3 (AM3) is a marine natural product produced by the dinoflagellate Amphidinium klebsii. Although the absolute configuration of AM3 was determined in 1999 by extensive NMR analysis and degradation of the natural product, it was a daunting task because of the presence of numerous stereogenic centers on the acyclic carbon chain and the limited availability from natural sources. Thereafter, revisions of the absolute configurations at C2 and C51 were reported in 2008 and 2013, respectively. Reported herein is the revised absolute configuration of AM3: 32S, 33R, 34S, 35S, 36S, and 38S based on the chemical synthesis of partial structures corresponding to the C31–C67 fragment of AM3 in combination with degradation of the natural product. The revised structure is unique in that both antipodal tetrahydropyran counterparts exist on a single carbon chain. The structural revision of AM3 may affect proposed structures of congeners related to the amphidinols.

Original languageEnglish
Pages (from-to)6060-6064
Number of pages5
JournalAngewandte Chemie - International Edition
Issue number21
Publication statusPublished - May 22 2018

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry


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