Expanding the Structural Diversity of Polyketides by Exploring the Cofactor Tolerance of an Inline Methyltransferase Domain
摘要:
A strategy for introducing structural diversity into polyketides by exploiting the promiscuity of an in-line methyltransferase domain in a multidomain polyketide synthase is reported. In vitro investigations using the highly-reducing fungal polyketide synthase CazF revealed that its methyltransferase domain accepts the nonnatural cofactor propargylic Se-adenosyl-L-methionine and can transfer the propargyl moiety onto its growing polyketide chain. This propargylated polyketide product can then be further chain-extended and cyclized to form propargyl-alpha pyrone or be processed fully into the alkyne-containing 4'-propargyl-chaetoviridin A.
Ru-catalyzed sequence for the synthesis of cyclic amido-ethers
作者:Barry M. Trost、Ehesan U. Sharif、James J. Cregg
DOI:10.1039/c6sc02849g
日期:——
Efficient synthesis of versatile building blocks for enabling medicinal chemistry research has always challenged synthetic chemists to develop innovative methods. Of particular interest are the methods that are amenable to...