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. Author manuscript; available in PMC: 2010 Jul 7.
Published in final edited form as: Tetrahedron. 2007 Sep 6;63(32):7733–7742. doi: 10.1016/j.tet.2007.04.037

Figure 1.

Figure 1

1H NMR (500 MHz) spectra of (+)-germacrene A at different temperatures: A) 50° C, B) 25° C, C) 0° C, D) −20° C, and E) −50° C. The letters a, b and c designate peaks for three conformers a, b and c.