background marine sponge/nano-cuo as a natural catalyst efficiently catalyzed the sulfonylation reaction of p-chlorobenzene sulfonyl chlorides with amines in order to prepare sulfonamides. the advantages included use of a natural catalyst, ease of handling, requirement of a very small amount of catalyst, mild reaction condition and appropriateness to high yield. objectives the current study aim...

Human manganese superoxide dismutase (MnSOD) labeled with 3-fluorotyrosine (Tyf) was complexed with the (15)N-labeled inhibitor azide ([(15)N(3)(-)]). The sample was characterized by solid-state NMR (SSNMR) spectroscopy ((19)F-MAS and (15)N-CPMAS). Employing (19)F-(15)N-REDOR spectroscopy, we determined the distances between the fluorine label in Tyrosine-34 and the three (15)N-nuclei of the az...

The effectiveness of fluorescence quenching of pyrene-1-sulfonyl azide, a hydrophobic probe used to photo-label acetylcholine receptor (AcChR)-rich electroplax membranes [Sator, V., Gonzalez-Ros, J. M., Calvo-Fernandez, P., & Martinez-Carrion, M. (1979) Biochemistry 18, 1200], is used to study the accessibility of the covalently attached fluorophore to extramembranous quenchers as a function of...

Direct electrochemical synthesis of sulfonyl amidines from aliphatic amines and sulfonyl azides was realized with good to excellent yields. Traditional tertiary amine substrates were broadened to secondary and primary amines. The reaction intermediates were observed and a reaction mechanism was proposed and discussed.

Sulfonyloxyl radicals, readily generated upon UV irradiation of p-pyridine sulfonyl ethanone oxime derivatives, effectively cleave DNA, in a pH independent manner, and under either aerobic or anaerobic conditions. p-Pyridine sulfonyl ethanone oxime derivatives were synthesized from the reaction of p-pyridine ethanone oxime with the corresponding sulfonyl chlorides in good to excellent yields. A...

A conceptually new and straightforward introduction of sulfonyl groups at the C-7 position of an indole ring has been achieved via AlCl(3) mediated unexpected regioselective sulfonyl group migration for N-alkyl/aryl/heteroarylsulfonyl indoles affording potential inhibitors of Mycobacterium tuberculosis H37Rv chorismate mutase.

Eight novel 1-[2-(1H-tetrazol-5-yl)ethyl]-1H-benzo[d][1,2,3]triazoles (3a-h) have been synthesized in order to obtain new compounds with potential anti-nociceptive and anti-inflammatory activity. The titled compounds were synthesized by the condensation of 1-[2-(1H-tetrazol-5-yl) ethyl]-1H-benzotriazole (2) and appropriate acid chlorides. Compound 2 was synthesized by reacting 3-(1H-benzo[d][1,...

Aziridines are especially in demand because of their natural occurrence in diverse biologically active compounds and their manifold transformations in chemical reactions. The ring constraint renders them very reactive substances. In the presence of nucleophiles (N, O, S, C nucleophiles, and halides) they undergo ring-opening, they are used for [3+2] cycloadditions and [3+3] annulations, and the...