Chemical constituents from leaves of Lagerstroemia speciosa L.

This work describes the isolation and characterization of fourteen compounds from Lagerstroemia speciosa (L.) Pers, including four triterpenes (1-4), eight ellagic acids (5-12), one coumarin (13) and one neolignan (14). Their structures were elucidated on the basis of various spectroscopic methods (UV, IV and NMR, including 2D experiments). It was the first report of compounds 14 from the genus Lagerstroemia and the first report of compounds 9-12 from the family Lythraceae.