1,4-二氧六环

N-(2-hydroxyethyl)-2-phthalimidoaceto-2',6'-xylidide

3-(4-chloro-phenyl)-2-cyano-1-phthalimido-aziridine-2-carboxylic acid methyl ester

2-cyano-3-(isopropylimino)-2-(methoxycarbonyl)-4-(p-methoxyphenyl)-1-phthalimidoazetidine

2-cyano-2-(methoxycarbonyl)-4-(p-chlorophenyl)-1-phthalimido-3-(tert-butylimino)azetidine