Microbial transformation of silybin by Trichoderma koningii

Biotransformation of silybin diastereomers with Trichoderma koningii gave two pairs of glucosylated derivatives, silybin 3-O-β-d-glucopyranosides (3 and 5) and silybin 7-O-β-d-glucopyranosides (4 and 6).