Melting point was determined on an electrochemical micro-melting point apparatus. IR spectra were recorded (KBr discs) on a Shimadzu IR470A spectrophotometer, validation (νmax in cm-1). 1HNMR and 13C-NMR spectra were recorded on a Bruker R32 (400 MHz) instrument in CDCl3 and DMSO-d6 with TMS as an internal standard (chemical shifts in δ, ppm). UV spectra were recorded on HATACHI, U-2000 spectrophotometer Ultrospeck in methanol (λmax in nm). Mass spectra were recorded on a Varian 3800 mass spectrophotometer. TLC was performed using silica gel GF254. Freshly distilled solvents were used for extraction, isolation and purification. Evaporations were performed under reduced pressure on a Buchii rotary evaporator.