Three minor hydroxycinnamic acid spermidines were isolated from pollen
of Quercus dentata, and identified as N-1-feruloyl-N-5,N-10-dicaffeoy
lspermidine, -p-coumaroyl-N-5-caffeoyl-N-10-feruloylspermidine, and as
N-1,N-5-di-p-coumaroyl-N-10-caffeoylspermidine. Copyright (C) 1996 Pu
blished by Elsevier Science Ltd