C28H23N3O2S
N-(tert-butyl)-3,4-dihydro-9-[4-(4-propargyloxymethyl)benzoylphenyl]-2H,6H-pyrimido[1,2-c][1,3]benzothiazin-6-imine
N-(tert-butyl)-9-{4-[4-(tert-butyldiphenylsilyloxy)methyl]benzoylphenyl}-3,4-dihydro-2H,6H-pyrimido[1,2-c][1,3]benzothiazin-6-imine
3,4-dihydro-9-(3-nitrophenyl)-2H,6H-pyrimido[1,2-c][1,3]benzothiazin-6-imine
N-(tert-butyl)-3,4-dihydro-9-(3-nitrophenyl)-2H,6H-pyrimido[1,2-c][1,3]benzothiazin-6-imine