noun
definition
A cyclic intramolecular ester derived from a hydroxy acid.
Examples of lactones in a Sentence
The acid, when distilled slowly, is decomposed and yields a and 0-angelica lactones.
As an illustration it may be pointed out that in the case of the two known types of lactones - the y-lactones, which contain four carbon atoms and one oxygen atom in the ring, are more readily formed and more stable (less readily hydrolysed) than the S-lactones, which contain one oxygen and five carbon atoms in the ring.
The unsaturated acids also received much attention, and he discovered the internal anhydrides of oxyacids, termed lactones.
Extract standardized to 24% flavone glycosides and 6% terpene lactones.
These findings suggest that the allergens of Liriodendron may be sesquiterpene lactones.
Potentially allergenic sesquiterpene lactones have been isolated from this species.
These findings suggest that such lactones may be the allergens of Magnolia.
Reaction (e) is a special case for hydroxyl lactones which results in cleavage across the lactone ring.