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3β-(Stearyloxy)olean-12-ene from Austroplenckia populnea: Structure Elucidation by 2D-NMR and Quantitative 13C-NMR Spectroscopy

✍ Scribed by S. A. Vieira Filho; L. P. Duarte; G. D. F. Silva; O. W. Howarth; I. S. Lula

Publisher
John Wiley and Sons
Year
2003
Tongue
German
Weight
77 KB
Volume
86
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

3__β__‐(Stearyloxy)olean‐12‐ene was isolated from a hexane extract of Austroplenckia populnea Reiss (Celastraceae) leaves. The structure was solved by means of quantitative ^13^C‐NMR, HMBC, HMQC, COSY, NOESY, and NOE difference spectra. The mass spectrum showed an [M+1]^+^ ion peak at m/z 693, and the molecular formula C~48~H~84~O~2~ was confirmed by combustion analysis.

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