7-O-β-D-Glucosyl-3′,4′,5-trihydroxy-6-methyl flavanone—a new C-methyl flavanone glycoside from Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco] roots

Abstract

A new C-methyl flavanone, 7-O-β-D-glucosyl-3′,4′,5-trihydroxy-6-methyl flavanone, has been obtained from healthy Douglas-fir [Pseudotsugamenziesii (Mirb.) Franco] root bark in a high yield of 2.6%. Its structure was elucidated by high resolution and mass spectrometry together with a variety of chemical and physical tests and confirmed by synthesis of its methylated aglycone. Pathological testing of this new glucoside against Poriaweirii Murr. is being undertaken.