Coupling of (Z)-1-(3-amino-4-methoxyphenyl)-2-(3,4,5-trimethoxyphenyl)- ethene (I) with N-Fmoc-O-acetyl-L-serine (II) in the presence of DCC and HOBt provided the corresponding serineamide (III). Further deprotection of Fmoc and acetyl groups with NaOH furnished the title compound.