N. Artizzu et al., N-SUBSTITUTED-2-OXO-(2H)1-BENZOPYRAN-3-CARBOXAMIDE DERIVATIVES WITH ANALGESIC AND OR DIURETIC ACTIVITIES/, Il Farmaco, 50(12), 1995, pp. 853-856
The synthesis of N-substituted-2-oxo-(2H)1-Benzopyran-3-Carboxamide de
rivatives starting from semicarbazones or thiosemicarbazones and Carbo
n Suboxide (ratio 1:2) is described. Some compounds showed an interest
ing analgesic and/or diuretic activity in mice.