Establishment of the structure of gymnemagenin by x-ray analysis and the structure of deacylgymnemic acid

Yoshisuke Tsuda, Fumiyuki Kiuchi, Hong Min Liu

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The structure of gymnemagenin, the sapogenin of antisweet principle of Gymnema syrvestre, was firmly established as 3β,16β,21β,22α,23,28-hexahydroxy-olean-12-ene by the X-ray analysis of the 3β,23;21β,2???α-di-O-isopropylidene derivative. On the basis of this result, the structure of deacylgymnemic acid was elucidated as the 3-O-β-glucuronide by comparisons of the 13C-NMR spectra.

Original languageEnglish
Pages (from-to)361-362
Number of pages2
JournalTetrahedron Letters
Issue number3
Publication statusPublished - 1989


ASJC Scopus subject areas

  • Biochemistry
  • Drug Discovery
  • Organic Chemistry

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