N-(4-Bromophenyl)-2-methyl-3-oxo-3,4-dihydro-2H-1,2-benzothiazine -4-carboxamide 1,1-dioxide

N-(4-Fluorophenyl)-2-methyl-3-oxo-3,4-dihydro-2H-1,2-benzothiazin e-4-carboxamide 1,1-dioxide

2-Methyl-N-(2-methyl-4-nitrophenyl)-3-oxo-3,4-dihydro-2H-1,2-benz othiazine-4-carboxamide 1,1-dioxide

N-(2,4-Dimethoxyphenyl)-2-methyl-3-oxo-3,4-dihydro-2H-1,2-benzoth iazine-4-carboxamide 1,1-dioxide

N-(4-Methoxyphenyl)-2-methyl-3-oxo-3,4-dihydro-2H-1,2-benzothiazi ne-4-carboxamide 1,1-dioxide