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. Author manuscript; available in PMC: 2013 May 2.
Published in final edited form as: J Am Chem Soc. 2012 Apr 18;134(17):7282–7285. doi: 10.1021/ja3018253

Figure 2.

Figure 2

1H NMR comparison of (a) 13→14 and (b) 15→16. Signal assignments based on 1D coupling constants and 2D NMR experiments (see Supporting Information for further details).