Skip to main content
. Author manuscript; available in PMC: 2011 Oct 19.
Published in final edited form as: J Nat Prod. 2010 Feb 26;73(2):185–191. doi: 10.1021/np900656g

Figure 2.

Figure 2

Part A shows the chromatogram (254 nm) of the optimized, semipreparative HPLC separation of the active P. nigrum extract (10 mg in 100 μL of DMSO). A total of 30 peaks were collected for off-line microprobe NMR. Peak labeling corresponds to compounds 1–13. Part B shows 1H NMR spectra of selected compounds obtained by the separation mentioned above, whereas part C shows the spectra of two representative 2D NMR experiments.