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

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

2-Methyl-N-[4-(methylsulfonyl)phenyl]-3-oxo-3,4-dihydro-2H-1,2-be nzothiazine-4-carboxamide 1,1-dioxide

2-Methyl-3-oxo-N-[3-(trifluoromethyl)phenyl]-3,4-dihydro-2H-1,2-b enzothiazine-4-carboxamide 1,1-dioxide

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