Publication Type
Journal Article
UWI Author(s)
Author, Analytic
Harding, Wayne W.; Jacobs, Helen M.; McLean, Stewart; Reynolds, William F.
Author Affiliation, Ana.
Department of Chemistry
Article Title
Structural and 1H and 13C analysis of two new glabretal triterpenoids derivatives from Guarea jamaicensis
Medium Designator
n/a
Connective Phrase
n/a
Journal Title
Magnetic Resonance in Chemistry
Translated Title
n/a
Reprint Status
Refereed
Date of Publication
2001
Volume ID
39
Issue ID
11
Page(s)
719-22
Language
n/a
Connective Phrase
n/a
Location/URL
n/a
ISSN
n/a
Notes
n/a
Abstract
The ¹H and ¹³C NMR spectra of the glabretal derivatives, 21, 24-epoxy-3a, 7a, 21, 23-tetraacetoxy-25-hydroxy-
4a, 4b, 8b -trimethyl-14, 18-cyclo-5a, 13a,14a,17a-cholestane and 21,23-epoxy-3a,7a,21,24,25-pentaacetoxy-4a,4b,8b-trimethyl-14,18-cyclo-5a, 13a, 14a, 17a-cholestane, obtained from an acetylated fraction of extracts of Guarea jamaicensis, were completely assigned. 1D NMR and a number of 2D shift correlated NMR experiments, ¹H, ¹H-COSY, ¹H, ¹³C-HSQC-¹ J(C,H), ¹H, ¹³C-HMBC nJ(C,H) (n=2 and 3) and 2D ¹H, ¹H-NOESY, were utilized.....
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