In the search of a convenient synthesis for isocordoin (1), a potential ant
icancer natural product, 2 ' ,4 ' -dihydroxychalcone was inoculated in cell
suspension cultures of Morus nigro, which were expected to contain an acti
ve prenyltransferase. After 24 hours the target compound was easily isolate
d from the metabolite extract. Optimization of the biotransformation result
ed in a 85% yield of the prenyl derivative.