Iridoids from Spathodea Campanulata P. Beauvais Leaves

Abstract

Three new and four known iridoids have been isolated from the leaves of Spathodea campanulata, the structures of the new compounds were determined as 6- O-trans-caffeoyl-decinnamoyl globularimin, 6- O-trans-caffeoyl-asystasioside E and 6- O-trans-caffeoyl-5,7-bisdeoxycynanchoside and provisionally named as spatheosides A (1), B (2) and C (3) respectively. The known iridoids were identified as verminoside (4), 6′- O-trans-caffeoyl-loganic acid (5), catalpol (6) and ajugol (7). The structures of the isolated compounds were characterized by different spectroscopic methods.