23248-47-7Relevant articles and documents
On the Use of Hydrophobic Probes in the Chromatographic Purification of Solid-phase-synthesized Peptides
Garcia-Echeverria, Carlos
, p. 779 - 780 (1995)
A strategy for the reversed-phase chromatographic purification of solid-phase-synthesized peptides is described and illustrated by the synthesis of a 23-mer model peptide; the target peptide is distinguished from terminated by-products by the attachment of a hydrophobic probe to the resin-bound peptide.
Sulfur makes the difference: Synthesis and mesomorphic properties of novel thioether-functionalized imidazolium ionic liquid crystals
Mansueto, Markus,Kre?, Katharina Christina,Laschat, Sabine
, p. 6258 - 6264 (2015/03/30)
Novel thioether-linked imidazolium ionic liquid crystals were synthesized starting from methyl 2-mercaptoacetate. The mesomorphic properties were determined by differential scanning calorimetry (DSC), polarizing optical microscopy (POM), and X-ray diffraction. All mesogens displayed smectic A mesophase geometries with strongly interdigitated bilayer structures. Comparison of the thioether-linked imidazolium salts with the corresponding amine- and amide-linked imidazolium salts as well as simple N-alkyl-imidazolium salts showed that both mesophase width and stability increased with increasing softness of the linking unit, thus indicating the beneficial effect of sulfur. Additionally, an increase of the length of the linking unit decreased the interdigitation of the alkyl chains.
In Vitro Evaluation of Phosphocholine and Quaternary Ammonium Containing Lipids as Novel Anti-HIV Agents
Meyer, Karen L.,Marasco, Canio J.,Morris-Natschke, Susan L.,Ishaq, Khalid S.,Piantadosi, Claude,Kucera, Louis S.
, p. 1377 - 1383 (2007/10/02)
A series of synthetic lipids containing a two- or three-carbon backbone substituted with a thio, oxy, or amidoalkyl functionality and either a phosphocholine or quaternary ammonium moiety was evaluated as potential anti-HIV-1 agents.Several analogues were identified as possessing activity with the most promising compound being rac-3-octadecanamido-2-ethoxypropylphosphocholine (8).Compound 8 exhibited an IC50 for the inhibition of plaque formation of 0.16 μM wich was 84-fold lower than the IC50 value determined for CEM-SS cell growth inhibition.Initial mechanistic studies have indicated that these compounds, unlike AZT, are not reverse transcriptase (RT) inhibitors, but instead appear to inhibit a late step in HIV replication involving virus assembly and infectious virus production.Since these lipids are acting via a different mechanism, they represent an alternative approach to the chemotherapeutic treatment of AIDS as well as candidates for combination therapy with AZT.
