Two dihydropyranocoumarins were isolated from the root of Peucedanum wawrii and the structures were established as 3'(R)-acetoxy-3',4'-dihydroxanthyletin (1) and 3'(R)-acetoxy-4'(S)-angeloyloxy-3',4'-dihydroseselin (2), respectively, by spectroscopic methods. The absolute configurations were deduced by chemical correlations with known compounds.
Two dihydropyranocoumarins were isolated from the root of Peucedanum wawrii and the structures were established as 3'(R)-acetoxy-3',4'-dihydroxanthyletin (1) and 3'(R)-acetoxy-4'(S)-angeloyloxy-3',4'-dihydroseselin (2), respectively, by spectroscopic methods. The absolute configurations were deduced by chemical correlations with known compounds.