Plumeriapropionics A-E, Carboxyl-Substituted Phenylpropionic Acid Derivatives with Anti-Inflammatory Activity from L.

Five rare carboxyl-substituted phenylpropionic acid derivatives, plumeriapropionics A-E (-), together with one known analog, cerberic acid B (), were isolated from flowers of L. Their structures were elucidated using comprehensive spectroscopic methods. To date, only one compound of this structural type has been reported.