Examples of enantioselective catalysts, including homogeneous supported catalysts and biphasic liquid/liquid, are described and compared. In the case of asymmetric hydride transfer, polythiourea was proven to be more efficient for ruthenium-catalyzed reduction of aryl ketones, although the iridium complexes gave rise to higher ee when using amino sulfonamide bound to a polystyrene matrix. In th...

The title compound, C(9)H(12)N(2)O(2)S, is a useful precursor of a variety of modified sulfonamide mol-ecules. Due to the importance of these mol-ecules in biological systems (antibacterials, antidepressants and many other applications), there is a growing inter-est in the discovery of new biologically active compounds. In the title compound, the mol-ecules are linked by N-H⋯O inter-molecular h...

Ab initio/DFT analysis of the conformational properties of free Ac-Ala-NMe(2) (N-acetyl-L-alanine-N',N'-dimethylamide) in terms of the N-H.O, N-H.N, C-H.O hydrogen bonds and C(delta+) = O(delta-) dipole attractions was performed. The Ala residue combined with the C-terminal tertiary amide prefers an extended conformation and that characteristic of the (i + 1)th position of the betaVIb turn. The...

The naphthalene sulfonamide calmodulin antagonists, N-(6-aminohexyl)-5-chloro-1-naphthalenesulfonamide and N-(4-aminobutyl)-5-chloro-2-naphthalenesulfonamide, both induce limited myeloid differentiation of the human promyelocytic cell line, HL-60. In addition, these inhibitors augment the differentiation observed when HL-60 cells are induced with retinoic acid, dimethyl sulfoxide, or dibutyryl ...

The crystal structures of three isomeric compounds of formula C14H13Cl2NO2S, namely 3,5-di-chloro-N-(2,3-di-methyl-phen-yl)-benzene-sulfonamide (I), 3,5-di-chloro-N-(2,6-di-methyl-phen-yl)benzene-sulfonamide (II) and 3,5-di-chloro-N-(3,5-di-methyl-phen-yl)benzene-sulfonamide (III) are described. The mol-ecules of all the three compounds are U-shaped with the two aromatic rings inclined at 41.3 ...

The title compound, C(10)H(14)N(2)O(3)S, crystallized with two mol-ecules (A and B) in the asymmetric unit. The terminal methyl group of the ethyl-sulfonamide moiety in mol-ecule B is disordered over two sets of sites with an occupancy ratio of 0.61 (1):0.39 (1). Both mol-ecules have L-shaped conformations. In mol-ecule A, the dihedral angles between the benzene ring and its ethyl-sulfonamide a...