The asymmetric unit of the title compound, C(10)H(8)BrNO(2), contains three crystallographically independent mol-ecules. Two of the N-C-C-Br side chains adopt anti conformations [torsion angles = -179.8 (5) and -179.4 (4)°] and the other is gauche [-66.5 (6)°]. The crystal structure features short Br⋯O [3.162 (5) Å] contacts, C-H⋯O hydrogen bonds and numerous π-π stacking inter-actions [centroi...

In the title compound, C(14)H(8)INO(2), the dihedral angle between the isoindole ring and the phenyl ring of the 1-iodo-benzene group is 84.77 (15)°. There is a short inter-molecular I⋯O contact of 3.068 (3) Å in the crystal.

In the mol-ecule of the title compound, C(11)H(11)NO(4)S, the isoindoline ring system is almost planar with a maximum deviation of 0.008 (3)Å. In the crystal structure, inter-molecular C-H⋯O inter-actions link the mol-ecules into a three-dimensional network. π-π contacts between the isoindoline rings [centroid-centroid distances = 3.592 (1) and 3.727 (1) Å] may further stabilize the structure.

2-Substituted derivatives of indane-1,3-dione 3a–f , 5a–g, 6a–g were synthesized and investigated as anticoagulant agents. 2-Arylindane-1,3-diones (3) were obtained in the reaction of phthalide with appropriate arylaldehydes. 2-Arylmethyleneindane-1,3-diones (5) were prepared by condensation of indane-1,3-dione with the corresponding arylaldehydes. The compounds 5 were converted into their meth...

Three new purine derivatives, namely, 4-caryboxy-5,6-dihydro-4H,8H-pyrimido[1,2,3-cd]purine-8,10(9H)-dione (1), 7,9-dihydro-1-(3-oxobutyl)-1H-purine-6,8-dione (2), and 7-hydro-9-(3-oxobutyl)-1H-purine-6,8-dione (3) together with six known purine and pyrimidine derivatives were isolated from the EtOH/CH(2)Cl(2) extracts of the South China Sea gorgonian Subergorgia suberosa. The structures of 1-3...

The separation of nine furanonaphthoquinones by micellar electrokinetic chromatography (MEKC) is described. The running electrolytes used in this method were 0.03 M sodium dodecyl sulphate (SDS) in 0.09 M borate buffer (pH 9) containing 10% methanol, with an applied voltage of 20 kV. Application of this technique in the determination of the main furanonaphthoquinones, 5-hydroxy-2-(1-hydroxyethy...

The structure analysis of the title compound, C(14)H(16)O(2)S(2), shows the SMe and H atoms of the bond linking the six-membered rings to be syn and also to be syn to the bridgehead -CH(2)- group. Each of the five-membered rings adopts an envelope conformation at the bridgehead -CH(2)- group. The dione-substituted ring adopts a folded conformation about the 1,4-C⋯C vector, with the ketone group...

Carbonic anhydrase-azosulfonamide dissociation constants (Kd) were determined by gel filtration with high-performance liquid chromatography. By measuring the area of the elution peak at two wavelengths, Kd values were derived without having to measure a shallow trough. The procedure proved to be fast and reliable and has a general application. The dissociation constants were measured for 7-acet...