Gold(I)-catalysed synthesis of a furan analogue of thiamine pyrophosphate
作者:Amjid Iqbal、El-Habib Sahraoui、Finian J Leeper
DOI:10.3762/bjoc.10.270
日期:——
short and efficient route, involving gold(I)-catalysed cyclisation of an alkynyl alcohol to form the furan ring. The furan analogue of thiamine diphosphate (ThDP) was also made and tested for binding to and inhibition of pyruvate decarboxylase (PDC) from Zymomonas mobilis (overexpressed in E. coli with a N-terminal His-tag). It is a very strong inhibitor, with a K i value of 32.5 pM. It was also shown
Design of thiamine analogues for inhibition of thiamine diphosphate (ThDP)-dependent enzymes: Systematic investigation through Scaffold-Hopping and C2-Functionalisation
作者:Alex H.Y. Chan、Terence C.S. Ho、Rimsha Irfan、Rawia A.A. Hamid、Emma S. Rudge、Amjid Iqbal、Alex Turner、Anna K.H. Hirsch、Finian J. Leeper
DOI:10.1016/j.bioorg.2023.106602
日期:2023.9
inhibition is to use thiamine/ThDP analogues, which typically feature a neutral aromatic ring in place of the positively charged thiazolium ring of ThDP. While ThDP analogues have aided work in understanding the structural and mechanistic aspects of the enzyme family, at least two key questions regarding the ligand design strategy remain unresolved: 1) which is the best aromatic ring? and 2) how can we achieve
Hg(II) salts are identified as highly efficient catalysts for the versatile construction of spiroketals from alkyne diols in aqueous conditions. Monounsaturated spiroketals and furans were accessed with equal ease when propargylic triols (or propargylic diols) were subjected to similar conditions. Even the semiprotected alkyne diols gave the corresponding spiroketals with the same ease in a cascade manner. The reactions are Instant and high yielding at ambient temperatures. Regioselectivity issues are well addressed.
Furan-based inhibitors of pyruvate dehydrogenase: SAR study, biochemical evaluation and computational analysis
作者:Alex H. Y. Chan、Terence C. S. Ho、Daniel R. Parle、Finian J. Leeper
DOI:10.1039/d2ob02272a
日期:——
Many neutral derivatives of the furan analogue of thiamine were tested to explore the SAR of the two thiamine pyrophosphate (TPP)-binding pockets and the substrate-binding C2-pocket: the optimum inhibitor bound 77-fold more tightly than TPP.