Constituents of Umbelliferous Plants. VI. The Structure of Peulustrin, a New Coumarin from Peucedanum palustre L.

Abstract
A coumarin, C24H28O8, obtained from the root of Peucedanum palustre is shown to be 8(S)-(+)-8-(l-(2(R),3(S)-3-angeloyloxy-2-hydroxy-2-methylbutyryloxy)-l-methylethyl)-8,9-dihydro-2H-furo-[2,3-h]-l-benzopyran-2-one.