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. Author manuscript; available in PMC: 2013 Feb 24.
Published in final edited form as: J Nat Prod. 2012 Jan 31;75(2):175–180. doi: 10.1021/np2007044

Figure 1.

Figure 1

6-carbon unit consistent with COSY, HSQC, and HMBC spectra of 1. Bolded bonds indicate COSY network. Arrows indicate HMBC correlations (carbon detected by indicated proton). Double-headed arrows indicate reciprocal HMBC correlations.