Euphormins A and B, New Pyranocoumarin Derivatives from Hayata, and Their Anti-Inflammatory Activity.

Euphormin-A () and euphormin-B (), two new pyranocoumarin derivatives, and forty known compounds (-) were isolated from Hayata (Euphorbiaceae). The chemical structures of all compounds were established based on spectroscopic analyses. Several isolates were evaluated for their anti-inflammatory activity.