A “Radical Dance” in Thiamin Biosynthesis: Mechanistic Analysis of the Bacterial Hydroxymethylpyrimidine Phosphate Synthase
作者:Abhishek Chatterjee、Amrita B. Hazra、Sameh Abdelwahed、David G. Hilmey、Tadhg P. Begley
DOI:10.1002/anie.201003419
日期:2010.11.8
Tricky things with ThiC: Hydroxymethylpyrimidinephosphate (HMP‐P) synthase (ThiC) catalyzes one of the most complex rearrangement reactions in primary metabolism. Deuteration experiments show that under reducing conditions, in the presence of aminoimidazole ribonucleotide, the 5′‐deoxyadenosyl radical generated at the active site of ThiC reacts directly with the substrate and performs two iterative
Synthesis of Mixed Dinucleotides by Mechanochemistry
作者:Faisal Hayat、Mikhail V. Makarov、Luxene Belfleur、Marie E. Migaud
DOI:10.3390/molecules27103229
日期:——
We report the synthesis of vitamin B1, B2, and B3 derived nucleotides and dinucleotides generated either through mechanochemical or solution phase chemistry. Under the explored conditions, adenosine and thiamine proved to be particularly amenable to milling conditions. Following optimization of the chemistry related to the formation pyrophosphate bonds, mixed dinucleotides of adenine and thiamine (vitamin