(E)-3-(3,4-Bis-benzyloxy-phenyl)-acrylic acid 2-(3,4-bis-benzyloxy-phenyl)-1-carboxy-ethyl ester

(E)-3-(3,4-Bis-benzyloxy-phenyl)-acrylic acid 2-(3,4-bis-benzyloxy-phenyl)-1-(2-trimethylsilanyl-ethoxycarbonyl)-ethyl ester

allyl 3-(3,4-dimethoxyphenyl)-2-hydroxypropanoate

3-(3,4-Bis-allyloxy-phenyl)-2-hydroxy-propionic acid allyl ester

(E)-3-(3,4-Bis-benzyloxy-phenyl)-acrylic acid 1-allyloxycarbonyl-2-(3,4-bis-benzyloxy-phenyl)-ethyl ester