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. Author manuscript; available in PMC: 2018 Jul 5.
Published in final edited form as: Tetrahedron Lett. 2017 May 25;58(27):2675–2680. doi: 10.1016/j.tetlet.2017.05.084

Fig. 2.

Fig. 2

1H NMR spectra for synthesized wollamides. (A) The free base form of wollamide B (2); (B) The TFA salt form of wollamide B (2); (C) The free base form of wollamide A (3); (D) The TFA salt form of wollamide A (3). Samples for 1H NMR were dissolved in DMSO-d6 and spectra were collected on a Bruker AVANCE DRX-400 MHz NMR spectrometer (Bruker, Billerica, MA, USA) at 298 K.