Vinyl 5-(3-bromo-4-fluorophenyl)-4,6-dioxo-4,5,6,7,9,10-hexahydro-1H-pyrano[3,4-b][1,7]naphthyridine-8(3H)-carboxylate

9-(3-bromo-4-fluorophenyl)-2,3,5,9-tetrahydro-4H-pyrano[3,4-b]thieno[2,3-e]pyridin-8(7H)-one 1,1-dioxide

tert-butyl 5-hydroxy-tetrahydro-2H-pyran-3-ylcarbamate

5-(tert-butoxycarbonylamino)tetrahydro-2H-pyran-3-yl methanesulfonate

tert-butyl 5-amino-tetrahydro-2H-pyran-3-ylcarbamate