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. Author manuscript; available in PMC: 2011 Mar 3.
Published in final edited form as: J Am Chem Soc. 2010 Mar 3;132(8):2530–2531. doi: 10.1021/ja910654t

Figure 1.

Figure 1

X-ray structure of 2n. Selected bond lengths [Å] and angles [°]: N1-C1 1.448, C1-O1 1.405, C1-O2 1.416, C1-C2 1.543, C6-N1-C1-O1 −38.1, C7-N1-C1-O1 177.0, C7-N1-C1-O2 61.5, C6-N2-C1-O1 −153.7