Chemical and Chemotaxonomical Studes of Ferns. LXXXIII. Constituent Variation of Microlepia Marginata

Abstract

The variation of constituent of Microlepia marginata in the southwestern part of Kyushu was observed. According to the constituent pattern, it was divided into the following four strains; 1 : microlepin and/or 4-epimicrolepin, 2 : microlepin and/or 4-epimicrolepin and a new flavanone glycoside, 3 : a new flavanone glycoside, 4 : two new pimarane glycosides. The structures of these new compounds were respectively determined as naringenin 7-O-α-L-rhamnopyranosyl-(1→2)-(4-O-methyl)-β-D-glucoside, 3α-α-L-arabinofuranosyloxy-12α-β-D-xylopyranosyloxy-ent-pimara-8(14), 15-diene and 3α-α-L-arabinofuranosyloxy-12α-(β-D-4-O-acetylxylopyranosyloxy)-ent-pimara-8(14), 15-diene.