Abstract:A new named infexusin(1) together with a known compound,kamebacetal A,were usilated from the leaves of Rabdosia inflexus (Thumb.)Kundo collected at Song county,Henan Province,and their were determined by spectroscopic analysis. Inflexusin is elucidated as ent-1β,6,11β,15α-tertraacetoxy-6,7-secopirolactone-kaur-16-ent(1).