A. Presser et al.
0
0
1
1
1
.67–1.61 (m, 1H, H-8 ), 1.64–1.57 (m, 1H, H-7 ),
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(1998) Indian J Chem Sect B Org Chem Incl Med Chem
0
0
.58–1.51 (m, 1H, H-8a), 1.48–1.41 (m, 1H, H-8 ),
0
3
8. Ferreir JFS, Janick J (1996) Phytochemistry 41:97
7B:1161
0
.47–1.37 (m, 1H, H-6), 1.36–1.27 (m, 1H, H-5 ), 1.29
1
(
s, 3H, H-13), 1.19 (dd, J = 11.3, 6.4 Hz, 1H, H-5a),
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00
1
0
.02–0.88 (m, 1H, H-7 ), 0.89 (d, J = 6.4 Hz, 3H, H-14),
1
3
.77 (d, J = 7.1 Hz, 3H, H-15) ppm.;
C NMR
(
2010) J Nat Prod 3:161
(
100 MHz, DMSO-d ): d = 173.7 (C-20), 171.5 (C-17),
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2
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04.0 (C-3), 92.2 (C-10), 91.1 (C-12), 80.3 (C-12a), 51.6
C-5a), 45.0 (C-8a), 36.4 (C-4, C-6), 34.2 (C-7), 32.1 (C-9),
9.2* (C-18), 28.9* (C-19), 26.0 (C-13), 24.7 (C-5), 21.5
C-8), 20.5 (C-14), 12.2 (C-15) ppm.
(
2
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(
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Acknowledgements Open access funding provided by University of
Graz. We are grateful to Priv.-Doz. W. Schuehly for discussions, to
the MMV and the German Medical Aid Organization action medeor
e.V. for financial support.
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Open Access This article is distributed under the terms of the
use, distribution, and reproduction in any medium, provided you give
appropriate credit to the original author(s) and the source, provide a
link to the Creative Commons license, and indicate if changes were
made.
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