Orirubenones D to G, novel phenones from the Tricholoma orirubens mushroom

Abstract

In the course of isolating hyaluronan-degradation inhibitors from the Tricholoma orirubens mushroom, new phenones, orirubenones D to G, were isolated. Although none of the compounds had the inhibitory activity, this result and the result in the previous paper allow us to conclude that the catechol moiety in the molecules was indispensable for exhibiting inhibitory activity.