A new C polyacetylene and seven isoprenylated pterocarpans from .

A new C polyacetylene, erysectol A (), and seven isoprenylated pterocarpans, phaseollin (), phaseollidin (), cristacarpin (), (3')-erythribyssin D/(3'S)-erythribyssin D () and dolichina A/dolichina B () were isolated from the twigs and leaves of Their structures were determined based on their NMR spectral data. Except for -, all the other compounds were isolated from this plant for the first time. Erysectol A was the first reported C polyacetylene from plants.