Chromone

Chromone (or 1,4-benzopyrone) is a derivative of benzopyran with a substituted keto group on the pyran ring. It is an isomer of coumarin.

Derivatives of chromone are collectively known as chromones. Most, though not all, chromones are also phenylpropanoids.

6,7-dimethoxy-2,3-dihydrochromone has been isolated from Sarcolobus globosus.

Examples

 * Roger Altounyan studied chromones and eventually found disodium cromoglicate. This drug was found to inhibit antigen challenge as well as stress induced symptoms. Cromoglicate is used as a mast cell stabilizer in allergic rhinitis, asthma and allergic conjunctivitis. Comparatively free of side-effects, unfortunately its short half-life limited its value.
 * Nedocromil sodium was found to have a somewhat longer half-life.