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. Author manuscript; available in PMC: 2016 Jun 30.
Published in final edited form as: J Nat Prod. 2006 Dec;69(12):1739–1744. doi: 10.1021/np060006n

Figure 1.

Figure 1

(a) Conformation of 1 with minimized energy. (b) Conformation of 2 with minimized energy. The arrows show the NOE correlations, and the data are the distances in Å between correlated protons.