Disulfide- and terminal alkyne-modified magnetic silica particles (DA-MSPs) were synthesized and used to covalently capture and reductively release azido glycopeptides via click chemistry and dithiothreitol treatment. Using DA-MSPs, an efficient and specific enrichment method for separating azido glycopeptides has been developed.

Various 1,2,3-triazole and 1,2,3,4-tetrazole fused multi-cyclic compounds were synthesized from carbohydrate derived azido-alkyne and azido-cyanide substrates. The acid sensitive 1,2-O-isopropylidene group of the furanosyl sugar was utilized for diversification to glycosides and nucleosides under Fischer glycosidation and Vorbruggen's conditions, respectively.

A novel photoreactive analog of cholesterol, 3alpha-(4-azido-3-[125I]iodosalicylic)-cholest-5-ene ([125I]azido-cholesterol), was used to label both native acetylcholine receptor (AChR)-rich membranes from Torpedo californica and affinity-purified Torpedo AChRs reconstituted into lipid vesicles. In both cases all four AChR subunits incorporated [125I]azido-cholesterol on an equal molar basis and...

The HKR of racemic syn- or anti- alkoxy- and azido epoxides catalyzed by Co(salen) complex affords a practical access to a series of enantioenriched syn- or anti- alkoxy- and azido epoxides and the corresponding 1,2-diols. This strategy has been successfully employed in the concise, enantioselective synthesis of bioactive molecules such as (S,S)-reboxetine and (+)-epi-cytoxazone.

Cytochrome b was identified as one of the ubiquinone-binding proteins in bovine heart mitochondrial ubiquinol-cytochrome c reductase by photoaffinity labeling using 3-azido-2-methyl-5-methoxy-6-(3,7-dimethyl[3H]-octyl)-1,4-benzoquinone ([3H]azido-Q). The [3H]azido-Q-labeled cytochrome b protein was purified to homogeneity from the azido-Q-labeled ubiquinol-cytochrome c reductase by a procedure ...

We describe a synergistic effect of combinations of foscarnet and 3'-azido-3'-deoxythymidine against human immunodeficiency virus type 1 multiplication in cell culture, an additive effect of foscarnet and 3'-azido-3'-deoxythymidine triphosphate against human immunodeficiency virus type 1 reverse transcriptase, and a low toxicity in cell culture of combinations of the two drugs.

A facile strategy for the synthesis of trifunctional molecules involving three sequential selective triazole-forming reactions is proposed. This method exploits three kinds of mechanistically different azido-type-selective cycloadditions. Three different azidophiles could be efficiently connected to a triazido platform molecule with three types of azido groups in a consecutive manner, which ren...