Chinese Journal of Magnetic Resonance ›› 2005, Vol. 22 ›› Issue (1): 35-41.

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Complete NMR Chemical Shift Assignments for Three Serratane Triterpenoids Isolated from Moss Homalia Trichomanoides

  

  1. School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
  • Received:2004-08-23 Revised:2004-11-01 Online:2005-03-05 Published:2005-03-05
  • Supported by:

    国家自然科学基金资助项目(30271537).

Abstract:

The chemical structures of three serratane type triterpenoids isolated from the moss Homalia trichomanoides (Hedw.) B. S. G. were elucidated as 3α-methoxyserrat-14-en-21β-ol (1), 3β-methoxy-serrat-14-en-21β-ol (2) and 3β-methoxyserrat-14-en-21-one (3). Their 1H and 13C chemical shifts were assigned using 1D and 2D NMR spectroscopy (including 1H-1H COSY, HMQC and HMBC). Stereochemistry of C-3 for the three compounds and that of C-21 for compounds 1 and 2 were determined by coupling patterns in the 1H NMR spectra.

Key words: NMR, assignment, HMQC, HMBC, serratane type triterpeniods, Homalia trichomanoides

CLC Number: