Advances in Inorganic Chemistry and Radiochemistry. Volume 3.

Fatty Acids of Thalictrum revolutum Fruit Lipid

“…The fact that transisomers of unsaturated fatty acids travels faster than the cisisomers through a silver nitrate treated column or tic has been established by a number of workers (11)(12)(13)(14). In the present study, fatty acids having a particular number of double bonds were eluted by a solvent system of definite composition (7), and the trans-isomers were eluted in earlier fractions, followed by the cis-isomers.…”

Lipid Geometrical Isomerism: From Chemistry to Biology and Diagnostics

“…Since their discovery in 1962, , argentation techniques have been one of the more important tools for lipid analysis, allowing the separation of different lipid classes based on the unsaturation degree of molecules. The technique is based on the chemical ability of silver ions to form weak charge-transfer complexes with electron-rich olefinic double bonds. , These complexes are stronger with cis than trans double bonds, allowing their separation by thin-layer (TLC) and high-performance liquid (HPLC) chromatography. , …”

Single-Step Synthesis of Cell-Permeable Protein Dimerizers That Activate Signal Transduction and Gene Expression

“…Because useful levels of stereoselectivity could not be coaxed from the metathesis, the product alkenes 3 were separated by chromatography (Ag + impregnated SiO 2 ) . Due to obscured olefin resonances and geometric isomerism, the stereoisomers 3E and 3Z were assigned on the basis of a comparison of the 13 C chemical shifts of the allylic (C38) and olefinic (C39) carbons obtained by an inverse-detected 1 H− 13 C HMQC experiment.…”