p. 1447 - 1456
(2007/10/03)saccharin
methyl 4-hydroxy-2H-1,2-benzothiazine-3-carboxylate 1,1-dioxide
methyl 3-oxo-2,3-dihydrobenzo[d][1,2]thiazol-2-acetate 1,1-dioxide
trifluoromethylsulfonic anhydride
4-hydroxy-2-(4-methoxy-benzyl)-1,1-dioxo-1,2-dihydro-1λ6-benzo[e][1,2]thiazine-3-carboxylic acid methyl ester