... European Journal of Medicinal Chemistry. ... Apart from the medicinal applications coumarins are also used as sweetener, fixative of perfumes [7], enhancer of natural oils such as lavender, a food ... C-4 CH 3 ), 6.01 (1H, s, C-3H), 7.01 (1H, d, J = 8.4 Hz, C-7H) 7.12 (1H, d, J = 8.4 Hz ...