Chemische und Chemotaxonomische Untersuchungen der Pterophyten. L. Chemische Untersuchungen der Inhaltsstoffe von Plagiogyria matsumureana MAKINO

Abstract

From the fronds of Plagiogyria matsumureana MAKINO, besides fern-9 (11)-ene and astragalin, plagiogyrin A (I) and B (II) were isolated. The structure and the absolute configuration of plagiogyrin B were determined mainly by spectroscopic methods and chemical transformation to plagiogyrin A. The biosynthetic origin of I and II is probably 4-O-p-coumaroyl-D-glucose, followed by a condensation of the C₆-C₃ unit with the 3-dehydroglucose moiety.