4-Meth-oxy-N-(4-meth-oxy-2-nitro-phen-yl)benzamide.

In the title compound, C(15)H(14)N(2)O(5), the central amide C-C(=O)-N-C unit forms dihedral angles of 28.17 (13) and 26.47 (13)° with the two benzene rings, whereas the two benzene rings are almost coplanar, making a dihedral angle of 4.

2-Azido-1-(4-nitro-phen-yl)ethanone.

In the title compound, C(8)H(6)N(4)O(3), the ketone [C-C(=O)-C] and nitro groups are tilted with respect to the benzene ring by 18.92 (6) and 24.11 (15)°, respectively.

2-Azido-1-(4-methyl-phen-yl)ethanone.

In the mol-ecule of the title compound, C(9)H(9)N(3)O, the angle formed by the least-squares line through the azide group with the normal to the plane of the benzene plane ring is 46.62 (16)°. The crystal structure features C-H⋯O hydrogen bonds, which link the mol-ecules into zigzag chains running parallel to [010].

2-Azido-1-(4-fluoro-phen-yl)ethanone.

The crystal structure of the title compound, C(8)H(6)FN(3)O, is stabilized by C-H⋯O hydrogen bonds, which link the mol-ecules into chains running parallel to the a axis.

Paniculacin, a new coumarin derivative from Murraya paniculata.

Paniculacin (1), a new coumarin derivative, has been isolated from the ethyl acetate soluble fraction of the ethanolic extract of Murraya paniculata along with umbelliferone, scopoletin, 4-hydroxybenzoic acid, trans-cinnamic acid, and β-sitosterol. Their structures were elucidated on the basis of spectral data.

Unsymmetrically disubstituted urea derivatives: a potent class of antiglycating agents.

A series of unsymmetrically disubstituted urea derivatives 1-28 has been synthesized and screened for their antiglycation activity in vitro. Compounds 26 (IC(50)=4.26+/-0.