Studies on terpenoids and steroids, 25. complete 1H- and 13C-nmr spectral assignments of salaciquinone, a new 7-oxo-quinonemethide dinortriterpenoid

Yasuhiro Tezuka, Tohru Kikuchi, Bhavani Dhanabalasingham, Veranja Karunaratne, A. A.Leslie Gunatilaka

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

A new 7-oxo-quinonemethide dinortriterpenoid, salaciquinone [1], and a known quinonemethide dinortriterpenoid, isoiguesterin [3], were isolated from the root bark of Salada reticulata var. β-diandra (Celastraceae). The structure elucidation of salaciquinone was based on detailed 2D and nOe-difference nmr spectroscopy, leading to the complete assignment of the 1H- and13C-nmr spectra and revision of some 1H-nmr spectral assignments made previously for the related 7-oxo-quinonemethide nortriterpenoid, dispermoquinone [2]. Complete 1H- and 13C-nmr spectral assignments of isoiguesterin were also made, also leading to revision of some13C-nmr assignments previously made for this compound.

Original languageEnglish (US)
Pages (from-to)270-276
Number of pages7
JournalJournal Of Natural Products
Volume57
Issue number2
DOIs
StatePublished - Feb 1 1994
Externally publishedYes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Molecular Medicine
  • Pharmacology
  • Pharmaceutical Science
  • Drug Discovery
  • Complementary and alternative medicine
  • Organic Chemistry

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