General Information of Structural Characterization

The general information of structural characterization is given in Sect. 9.2. 

Melting points were measured on a hot-plate microscope apparatus and uncorrected. 

NMR spectra were recorded on a Varian Mercury-Plus 200 spectrometer at 200 MHz or on a Varian XL-300 spectrometer at 300 MHz, or on a Varian Mercury puls-400 spectrometer at 400 MHz, or on a Varian Mercury 600 spectrometer at 

600 MHz. Chemical shifts were reported in S (ppm) relative to tetramethylsilane (TMS) or residual solvent signals as the internal standard (CHCI3, S = 7.26, DMSO-ds, S = 2.50). Spectra data were presented as follows Chemical shifts (S ppm), multiplicity (s = singlet, d = doublet, t = triplet, q = quartet, m = multiplet), coupling constants (Hz), integration, and assignment. 

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