Synthesis, structure and Hirshfeld surface analysis of 2-oxo-2-chromen-6-yl 4--butyl-benzoate: work carried out as part of the AFRAMED project.

In the title compound, CHO, the dihedral angle between the 2-chromen-2-one ring system and the phenyl ring is 89.12 (5)°. In the crystal, the mol-ecules are connected through C-H⋯O hydrogen bonds to generate [010] double chains that are reinforced by weak aromatic π-π stacking inter-actions.

Pharmacological Evaluation of the Bronchorelaxant Effect of L. (Malvaceae) Extracts on Rat Trachea.

L. (Malvaceae) is a plant used in Burkina Faso for the treatment of various ailments including asthma. The aim of the study was to evaluate the pharmacological relaxant effect of the leafy stem extracts of and thereby verify claim of use in treating asthma.

Crystal structure of 2-oxo-2-chromen-7-yl 4-fluoro-benzoate.

In the title compound, CHFO, (I), the benzene ring is oriented at an acute angle of 59.03 (15)° relative to the coumarin plane (r.m.

Crystal structure of 2-oxo-2-chromen-3-yl propano-ate.

In the title compound, CHO, the dihedral angle between the coumarin ring system [maximum deviation = 0.033 (8) Å] and the propionate side chain is 78.48 (8)°.