Prenylation of a Nonaromatic Carbon of Indolylbutenone by a Fungal Indole Prenyltransferase
摘要:
FtmPT1 from Aspergillus fumigatus is a fungal indole prenyltransferase (PT) that normally catalyzes the regiospecific prenylation of brevianamide F (cyclo-L-Trp-L-Pro) at the C-2 position of the indole ring with dimethylallyl diphosphate (DMAPP). Interestingly, FtmPT1 exhibited remarkable substrate tolerance and accepted (E)-4-(1H-indol-3-yl)but-3-en-2-one (1) as a substrate to produce an unnatural novel alpha-prenylindolylbutenone (la). This is the first demonstration of the prenylation of a nonaromatic carbon of the acceptor substrate by a fungal indole PT.