4-hydroxy-2-quinolones. 42. Synthesis and biological activity of 1-R-2-oxo-3-(2H-1,2,4-benzothiadiazine-1,1-dioxid-3-yl)-4-hydroxyquinolines

A preparative method for the synthesis of 1-R-2-oxo-3-(2H-1,2,4-benzothiadiazine-1,1-dioxid-3-yl)-4-hydroxyquinolines has been developed. The diuretic and antitubercular activity of the obtained compounds have been studied.