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. Author manuscript; available in PMC: 2011 Aug 11.
Published in final edited form as: Tetrahedron Lett. 2010 Aug 11;51(32):4233–4236. doi: 10.1016/j.tetlet.2010.06.036

Figure 2.

Figure 2

Partial 1H NMR spectra of tosylated salt of L (5mM) with the increasing amount of sodium sulfate (50 mM) in D2O at pH 2.1. a = NCH3, b = NCH2, c = NCH2CH2 and d = ArCH2.