New CuCl2-induced glucoside esters and other constituents from Portucala oleracea
作者:Bin Wu、Liyan Yu、Xiaodan Wu、Jianbo Chen
DOI:10.1016/j.carres.2012.01.012
日期:2012.4
Two new glucoside esters 1 and 2 were produced as stress metabolites in the fresh leaves of Portulaca oleracea, in response to abiotic stress elicitation by CuCl(2). A new sugar ester (3) and two known compounds (4 and 5) were also isolated. Their structures were established by spectroscopic means. The antioxidative activities of stress metabolites and the related isolates were evaluated by DPPH assay