3-dimethylcarbamoyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonamide 、
异氰酸正丁酯 以there is obtained 1-butyl-3-[(3-dimethylcarbamoyl-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl) sulfonyl]urea, m.p. 93° C. (with decomposition)的产率得到1-butyl-3-[(3-dimethylcarbamoyl-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl) sulfonyl]urea