论文部分内容阅读
Three neolignans, (±)-demethylnitidanin(1), herpetol(2) and salvinal(3) were synthesized from methyl 4,5-dihydroxy-3-methoxy cinnamate or methyl 4-hydroxy-3-methoxy cinnamate with Ag2O-catalyzed biomimetic oxidative coupling as the key step of the sy