Sesquiterpene lactones and flavonoids from Helenium radiatum
作者:Elisa Petenatti、Mauricio J. Pestchanker、Ming Guo、Eduardo Guerreiro
DOI:10.1016/0031-9422(90)85301-u
日期:1990.1
Abstract The aerial parts of Helenium radiatum afforded two known flavones, the pseudoguaianolide 9- O -desacetylspathulin-2- O -angelate and the guaianolide 2-desoxypleniradin-4- O -α- l -rhamnopyranoside. The structures were elucidated by spectroscopic methods and chemical transformations.