(5E)-8-(tert-butyldiphenylsilanyloxy)-2-((2R,E)-1-tritylaziridin-2-ylmethylene)oct-5-enoic acid methyl ester

(5E)-2-((2R,E)-aziridin-2-ylmethylene)-8-(tert-butyldiphenylsilanyloxy)oct-5-enoic acid methyl ester

(5E)-2-((2R,E)-1-acetylaziridin-2-ylmethylene)-8-(tert-butyldiphenylsilanyloxy)oct-5-enoic acid methyl ester

(4R)-4-[(3E)-6-(tert-butyldiphenylsilanyloxy)hex-3-enyl]-2-oxo-2,3,4,7-tetrahydro-1H-azepine-4-carboxylic acid methyl ester