Acetophenones Isolated from Acronychia Pedunculata and their Anti-proliferative Activities

Structure Elucidation of Procyanidins Isolated from Rhododendron formosanum and Their Anti-Oxidative and Anti-Bacterial Activities.

Rhododendron formosanum is an endemic species distributed in the central mountains of Taiwan. In this study, the biological activities of major procyanidins isolated from the leaf extract of R. formosanum were investigated. Four compounds, including two procyanidin dimers, procyanidin A1 (1) and B3 (2), and two procyanidin trimmers, procyanidin C4 (4) and cinnamtannin D1 (5), were isolated and ...

Comparative study on alkaloids and their anti-proliferative activities from three Zanthoxylum species

BACKGROUND Alkaloids have been considered as the most promising bioactive ingredients in plant species from the genus Zanthoxylum. This study reports on the compositions and contents of the Zanthoxylum alkaloids (ZAs) from three Zanthoxylum species, and their potential anti-proliferation activities. METHODS An HPLC-UV/ESI-MS/MS method was established and employed to analyze the alkaloids in d...

Polyphenols with anti-proliferative activities from Penthorum chinense Pursh.

Two new polyphenols, penthorumin C (1) and 2,6-dihydroxyacetophenone-4-O- [4',6'-(S)-hexahydroxydiphenoyl]-β-D-glucose (2), along with four known polyphenolic acids, pinocembrin-7-O-[4",6"-hexahydroxydiphenoyl]-β-D-glucose(3), pinocembrin-7-O-[3"-O- galloyl- 4",6"-hexahydroxydiphenoyl]-β-D-glucose (4), thonningianin A (5), and thonningianin B (6) were isolated from Penthourm chinense. All compo...

Polyphenols Isolated from Xanthoceras sorbifolia Husks and Their Anti-Tumor and Radical-Scavenging Activities.

Xanthoceras sorbifolia Bunge. is used in traditional medicine in North China. To evaluate the anti-tumor and radical-scavenging activities of X. sorbifolia husks polyphenols and determine their structure-activity relationships, 37 polyphenols 1-37 were obtained by bioassay-guided fractionation. Two new compounds 1-2, and compounds 5, 6, 8, 9, 11, 14-17, 21-25, 27-29, 31, 33, 34, 36, and 37 were...

anti-proliferative and apoptotic activities of chrysin in neuroblastoma cells