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. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: Bioorg Med Chem Lett. 2011 Oct 24;22(1):683–688. doi: 10.1016/j.bmcl.2011.10.054

Figure 3.

Figure 3

Comparison of 13C NMR chemical shifts and CD spectra of 1 (-COO− form), 2 (-COOH form), protonated 1 and semisynthetic 2 (A) 13C NMR chemical shifts comparison; (B) CD absorption curve of 1 and 2 with protonated 1 and semisynthetic 2.

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