Amides from Peperomia tetraphylla

To investigate the chemical constituents of Peperomia tetraphylla.The constituents of EtOAc-soluble portion were isolated and purified by chromatography. Their structures were identified by spectral features.Six amides were isolated and identified as, aristololactam All (1), aristololactam B II (2), N-trans-feruloyltyramine (3), N-trans-sinapoyltyramine (4), N-trans-feruloylmethoxytyramine (5), N-p-coumaroyltyramine (6).All compounds were isolated from this plant for the first time.