Chemoselective and Diastereoselective Synthesis of
<i>C</i>
‐Aryl Nucleoside Analogues by Nickel‐Catalyzed Cross‐Coupling of Furanosyl Acetates with Aryl Iodides
作者:Yuxi Li、Zheng Wang、Luyang Li、Xiaoying Tian、Feng Shao、Chao Li
DOI:10.1002/anie.202110391
日期:2022.1.3
The facile synthesis of C-aryl nucleoside analogues from readily available furanose acetates and aryl iodides is disclosed. This nickel-catalyzed cross-electrophile coupling showed good functional-group compatibility and excellent β-selectivity. The high chemoselectivity with respect to aryl iodides enabled the efficient preparation of a variety of C-aryl halide furanosides suitable for various po
Synthesis of Stable NAD
<sup>+</sup>
Mimics as Inhibitors for the
<i>Legionella pneumophila</i>
Phosphoribosyl Ubiquitylating Enzyme SdeC
作者:Jerre M. Madern、Robbert Q. Kim、Mohit Misra、Ivan Dikic、Yong Zhang、Huib Ovaa、Jeroen D. C. Codée、Dmitri V. Filippov、Gerbrand J. Heden van Noort
DOI:10.1002/cbic.202000230
日期:2020.10.15
Modestly modified: Three stable NAD+ analogues namely, c‐NAD+, S‐NAD+ and BAD were prepared by using an optimized chemoenzymatic procedure and were compared side‐by‐side for enzyme inhibition of Legionella effector enzyme SdeC, which is important in bacterial virulence. Minimal structural variation in the furanose ring or nicotinamide part of NAD+ leads to efficient inhibitors.
Efficient Synthesis of Benzamide Riboside, a Potential Anticancer Agent
作者:Laurent F. Bonnac、Guang-Yao Gao、Liqiang Chen、Steven E. Patterson、Hiremagalur N. Jayaram、Krzysztof W. Pankiewicz
DOI:10.1080/15257770701528222
日期:2007.11.26
An efficient five step synthesis of benzamide riboside (BR) amenable for a large scale synthesis has been developed. It allows for extensive pre-clinical studies of BR as a potentialanticanceragent.
penetration ability of benzamide riboside [BR, (1-β-D-ribofuranosyl) benzene-3-carboxamide], which is a novel C-glycoside analogue of nicotinamide riboside and has excellent cytotoxic activity, we designed and synthesized two phosphordiamidates (1a and 1b) as prodrugs to deliver phosphorylated BR into cells. However, the bioactivity evaluation shows that 1a and 1b have lower biological activity (IC50 > 200 μM
activity against Staphylococcus aureus. Here, we show that this compound, a di-adenosine derivative, is inactive against the NADK enzyme from the Gram-negative bacteria Pseudomonas aeruginosa (PaNADK). This lack of activity can be explained by the crystal structure of PaNADK, which was determined in complex with NADP+ in this study. Structural analysis led us to design and synthesize a benzamide adenine