Benzyl 3-methyl-2-oxo-3-butenoate

benzyl-2-(1-benzyloxycarbonyl-4-methyl-2-oxopent-3-enylidene)-2,3-dihydro-5-methyl-6H,1,3-thiazine-4-carboxylate

4-Hydroxy-2-[methoxy-methoxycarbonyl-(2-methoxycarbonyl-benzoylamino)-methyl]-5-methyl-5,6-dihydro-4H-[1,3]thiazine-4-carboxylic acid benzyl ester

2-[1-(1,3-Dioxo-1,3-dihydro-isoindol-2-yl)-1-methoxycarbonyl-meth-(Z)-ylidene]-5-methyl-3,6-dihydro-2H-[1,3]thiazine-4-carboxylic acid benzyl ester

dibenzyl 7,8-dihydro-3-methyl-6-oxo-7-phenylacetamido-2H,6H-pyrido<2,1-b><1,3>thiazine-4,9-dicarboxylate

2-(4-Benzyloxycarbonyl-5-methyl-3,6-dihydro-[1,3]thiazin-2-ylidene)-malonic acid dimethyl ester

dibenzyl 7,8-dihydro-3-methyl-6-oxo-7-phthalimido-2H,6H-pyrido<2,1-b><1,3>thiazine-4,9-dicarboxylate