Three novel and one known hydroxycinnamic acid amides were isolated from pollen of Quercus dentata Thunb. They were identified as $N^1, N^5, N^{10}$ -tricaffeoylspermidine, $N^1$ -p-coumaroyl- $N^5, N^{10}$ -dicaffeoylspermidine, $N^1$ , $N^{10}$ -di-p-coumaroyl- $N^5$ -caffeoylspermidine and $N^1$ , $N^5$ , $N^{10}$ -tri-p-coumaroylspermidine, respectively. Information on the position of the hydroxycinnamoyl moieties was derived from electrospray mass spectral fragmentation patterns.