5-phenyl-11-tert-butyl-17-carbethoxy-23-methyl-25,26,27,28-tetrahydrocalix<4>arene

2-<3-(5-phenylsalicyl)-5-tert-butylsalicyl>-4-methylphenol

2-<3-(5-phenylsalicyl)-5-tert-butylsalicyl>-4-carbethoxyphenol

5-phenyl-11-tert-butyl-17-methyl-23-carbethoxy-25,26,27,28-tetrahydrocalix<4>arene

2-(3-bromo-5-phenylsalicyl)-4-tert-butyl-6-(bromomethyl)phenol