Methanesulfonic acid 1-[2,6-bis-(tert-butyl-dimethyl-silanyloxy)-phenyl]-4-oxo-3-phenylacetylamino-azetidin-2-ylmethyl ester
N-[8-(tert-Butyl-dimethyl-silanyloxy)-1-oxo-1,2,2a,3-tetrahydro-4-oxa-8b-aza-cyclobuta[a]naphthalen-2-yl]-2-phenyl-acetamide
N-(8-Hydroxy-1-oxo-1,2,2a,3-tetrahydro-4-oxa-8b-aza-cyclobuta[a]naphthalen-2-yl)-2-phenyl-acetamide
[2,6-Bis-(tert-butyl-dimethyl-silanyloxy)-phenyl]-[(E)-3-phenyl-prop-2-en-(E)-ylidene]-amine