due to high resolution power of sulfated cyclodextrins (hs-cds), utilization of these selectors for chiral resolution of 7 basic and 2 zwitterionic drugs have been examined. experiments were performed on a hp3dce instrument equipped with an on-column diode array uv absorbance detector. fused silica capillaries with an inner diameter of 50 ?m, an outer diameter of 365 ?m, and a total length of 4...

chiral pyrrolidines and pyrrolizidines with spirooxindole ring systems are the central skeletons for numerous alkaloids and pharmacologically important compounds. gelesmine, pseudotabersonine, formosanine, isoformosanine, morroniside and mitraphylline are some of the alkaloids containing spirooxindole ring systems. derivatives of spirooxindole find very wide biological applications as anti micr...

the distribution behavior of ofloxacin enantiomers was examined in the aqueous and organic solvent of a two-phase system containing chiral selector l-tartarate. the effect of extraction equilibrium time, buffer ph, organic solvents and length of alkyl chain of l-tartarate on the partition coefficients and enantioselectivity of racemic ofloxacin were investigated, respectively. the l-tartarate f...

Bi-isotropic media constitute a proper scenario for scrutinizing optical effects stemming from magnetoelectric parameters. Chiral magnetic current is macroscopic effect arising the chiral that enriches phenomenology of classical dielectric medium. This paper examines aspects bi-isotropic in presence Ohmic and conductivity. The full isotropic manifests circular birefringence described by dispers...

Different Chiral Ionic Liquids (CIL) based on L-proline have been developed. Simple and efficient synthetic methodologies are used, allowing preparation in good yields for twelve novel CILs using as a cation or anion combined with suitable counter-ions. A detailed physical chemical characterization of the was performed to evaluate influence counter-ions final properties. The most promissory wer...

Propagation of surface waves in a radially inhomogeneous chiral waveguide is considered. The setting reduced to boundary eigenvalue problem for the longitudinal components electromagnetic field Sobolev spaces. To find solution, variational formulation used. analysis an operator-valued function. Discreteness spectrum proved and distribution characteristic numbers function on complex plane determ...