2. Experimental
2.1. General
IR spectra were recorded in CHCl3 on FTIR-8900 spectrophotometer.
MPs were determined on Buchi 535 melting point
apparatus, and were uncorrected. Optical rotations were measured
on JASCO DIP-360 digital polarimeter. The 1H and 13C NMR
spectra were recorded in CDCl3 solutions on Bruker AMX at 500
and 125 MHz, respectively, chemical shifts ı in ppm rel. to SiMe4
as internal standard, coupling constants J in Hz. The EI MS and
HREI MS were measured on Jeol JMS-600H mass spectrometer. TLC
was performed with Si gel Merck precoated plates (PF254, 20 × 20,
0.25 mm). Compound 1 was gifted by University of Peshawar,
Pakistan.