A <i>Streptomyces</i> P450 enzyme dimerizes isoflavones from plants
作者:Run-Zhou Liu、Shanchong Chen、Lihan Zhang
DOI:10.3762/bjoc.18.113
日期:——
enables rapid structural diversification of natural products. However, our understanding of the dimerization enzymes involved in this biotransformation is still limited compared to the numerous reported dimeric natural products. Here, we report the characterization of three new isoflavone dimers from Streptomyces cattleya cultured on an isoflavone-containing agar plate. We further identified a cytochrome
Kudzuisoflavone-A was successfully synthesised via oxidativedimerisation of daidzein in the presence of cuprous chloride. Appropriately substituted isoflavones also undergo regioselective oxidativedimerisation when treated with thallium trifluoroacetate to give novel 6′,6′″-biisoflavones in good yield. A rationale for the regioselectivity is proposed.