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. Author manuscript; available in PMC: 2007 Nov 21.
Published in final edited form as: Tetrahedron Asymmetry. 2007 Jul 4;18(12):1391–1397. doi: 10.1016/j.tetasy.2007.06.012

Figure 5.

Figure 5

13C NMR spectra for C3 and the methyl group of compound 21. (A) 13C NMR signal for C2 in the absence of FBTrp. (B) Same as in Figure A but in the presence of FBTrp. (C) 13C NMR signal of the methyl group in the absence of FBTrp. (D) Same as in Figure C but in the presence of FBTrp.