Plants of the genus Piper have long been used as medicinal herbs. The chemistry species has widely investigated and phytochemical investigations conducted in all parts world led to isolation a number physiologically active compounds. Thus, this study was carried out investigate phytochemicals from abbreviatum their acetylcholinesterase inhibitory activity, which not previously investigated. Fra...

in this paper, 4,4ʹ-bipyridinium dichloride  supported sba-15 (sba@bipy2+ 2cl-) was used for the synthesis of dihydropyrimidinones. the synthesized catalyst was characterized by ft-ir spectroscopy, scanning electron microscopy (sem), transmission electron microscopy (tem) and thermogravimetric analysis (tga). this nanocomposite was shown to be an efficient heterogeneous catalyst for the synthes...

The isomerization of the double bond plays an important role in braking and de-braking light-controlled molecular brake. Therefore, pentiptycene-type (Pp-type) brake system ((E)- (Z)-4ʹ-pentiptycyl vinyl-[1,1ʹ-biphenyl]-4-carbonitrile) containing C = was theoretically studied. Combining 6-31G(d) basis set, ωB97XD functional with dispersion correction applied to implement (E)-configuration (Z)-c...

A new chromium(III) complex containing 4ʹ-hydroxy-2,2ʹ:6ʹ,2ʺ-terpyridine (tpyOH) has been prepared by the reaction of CrCl3. 6H2O with tpyOH in the presence of metallic zinc to afford the new complex [CrCl3(tpyOH)] (1). The complex 1 was used as a suitable precursor for the preparation of Cr2O3 nanoparticles by the simple calcination method at three different annealed temperatures of 400, 600, ...