Gas chromatographic investigation of phenylpropenoid glycerides from aspen (Populus tremula L.) buds

20 phenylpropenoid glycerides were synthesized by esterification of glycerol by p-coumaric, ferulic and caffeic acids. Main diagnostic ions in mass spectra and linear temperature programmed retention indices (LTPRI) of trimethylsilyl derivatives of these compounds were determined by GC/MS analysis. On the basis of these analytical parameters 39 in various degree substituted phenylpropenoid glycerides were for the first time identified in diethyl ether and ethyl acetate extracts from aspen buds.