MATERIALS AND METHODS
General Experimental Procedures
Mps. (uncorr.) were determined using the Leica Gallen III apparatus. IR spectra were recorded on a Perkin-Elmer 1650 FTIR spectrophotometer. NMR spectra were recorded on a Bruker Avance 300 Spectrometer, 1H NMR spectra were measured at 300 MHz and 13C NMR spectra were measured at 75 MHz. Deuterated solvent of chloroform (CDCl3) was used as