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A new formylated chalcone from Humulus lupulus with protective effect on HUVECs injury by angiotensin II
Nenling Zhang1,2, Birong Tian1,2, Shuang Zhao1,2
1a Key Laboratory of Optimal Utilization of Natural Medicinal Resources , Guizhou Medical University , Guiyang , PR China.
Abstract:
One new formylated chalcone, 3'- formyl xanthohumol (1) was isolated from the EtOAc-soluble partition of the cones of Humulus lupulus, along with two other known chalcones, namely dehydrocycloxanthohumol (2) and xanthohumol (3). The structure of compound 1 was elucidated on the basis of its 1D, 2D NMR and MS data. The structures of the known compounds were identified by comparison of their spectroscopic data with those reported by the literatures. The isolates were tested for their protective effects on human umbilical vein endothelial cells (HUVECs) injured by angiotensin II (Ang II), all the three compounds protected against the cell injury at the concentration of 20 μΜ, and compound 3 showed the most potent activity by improving cell viability from 53.9 to 74.9%.
