J. Nat. Prod., 67, 1744 (2004)
In this article a
lupane derivative (compound-#1) is given. The C-NMR data are displayed
in CSEARCH as follows:
this display the 'on-the-fly-check' using CSEARCH-NN-Technology is
activated, which highlights 4 positions within the
p-hydroxybenzoyl-moiety. The shiftvalues from the article are shown
The next slide
shows the differences between experimental values and predicted ones,
which reveals a significant difference in a well-seperated spin-system.
the paper the claim 'Compound 1 is
the first example of a lupane attached to a p-hydroxybenzoyl moiety'
is given on page 1745 - according to my opinion the p-hydroxybenzoyl
moiety is based on very pure analytical data.
written by: Wolfgang.Robien(-at-)c13nmr.at
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