128252-98-2Relevant articles and documents
Total Synthesis and Structural Revision of Chaetoviridins A
Makrerougras, Mehdi,Coffinier, Romain,Oger, Samuel,Chevalier, Arnaud,Sabot, Cyrille,Franck, Xavier
, p. 4146 - 4149 (2017/08/14)
The first synthesis of the proposed structures of chaetoviridins A 1-4 has been achieved in 10 steps by controlling the syn- or anti-aldol side chain. The angular lactone has been regioselectively introduced by condensation of a chiral dioxin-4-one to cazisochromene. Comparison of the NMR and circular dichroism data of the synthesized and reported natural products led to the complete reassignment and renaming of the chaetoviridins.
Expanding the structural diversity of polyketides by exploring the cofactor tolerance of an inline methyltransferase domain
Winter, Jaclyn M.,Chiou, Grace,Bothwell, Ian R.,Xu, Wei,Garg, Neil K.,Luo, Minkui,Tang, Yi
supporting information, p. 3774 - 3777 (2013/08/23)
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-α pyrone or be processed fully into the alkyne-containing 4′-propargyl-chaetoviridin A.