Glucose-conjugation of the flavones of Psiadia arabica by Cunninghamella elegans

Abstract Microbial transformation of psiadiarabin and its 6-desmethoxy analogue 5,3′ dihydroxy-7,2′,4′,5′-tetramethoxyflavone by Cunninghamella elegans NRRL 1392 gave the 3′-glucoside conjugates of the two flavones. Structural elucidation of these two new metabolites was achieved using 1D and 2D NMR spectroscopy and CIMS.