(S,E)-3-(3,4-dihydroxyphenyl)-2-((3-(3,4-dihydroxyphenyl)acryloyl)oxy)propanoic acid

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

(E)-3-(3,4-Dihydroxy-phenyl)-acrylic acid (S)-1-allyloxycarbonyl-2-(3,4-bis-allyloxy-phenyl)-ethyl ester

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

(1R,2S)-1-(3,4-Dihydroxy-phenyl)-6,7-dihydroxy-1,2-dihydro-naphthalene-2,3-dicarboxylic acid bis-[(S)-1-allyloxycarbonyl-2-(3,4-bis-allyloxy-phenyl)-ethyl] ester