A new flavonoid, mucroflavone A, is isolated from the terrestrial part of T
anacetopsis mucronata (Regel. et Schmalh.) S. Kovalevsk. IR, mass, UV, and
PMR spectra are compared with those of related compounds to provide a basis
for proposing the structure 5,6,4'-trihydroxy-8,3'-dimethoxyflavone for mu
croflavone A.