7687-45-8

Upstream product

• 58-61-7 adenosine 
• 362-75-4 2',3'-isopropylidene adenosine 
• 124-63-0 methanesulfonyl chloride 

Downstream Products

• 40982-79-4 N⁶,N⁶-dibenzoyl-5'-O-mesyl-2',3'-O-isopropylidene adenosine 
• 40653-96-1 N⁶-benzoyl-2',3'-O-isopropylidene-5'-O-methylsulfonyladenosine 
• 1381761-52-9 1-(3-((((2R,3S,4R,5R)-5-(6-amino-9H-purin-9-yl)-3,4-dihydroxytetrahydrofuran-2-yl)methyl)(isopropyl)amino)propyl)-3-(4-(tertbutyl)phenyl)urea 
• 1381761-51-8 C₃₀H₄₄N₈O₄ 

Relevant academic research and scientific papers

In Situ Proteome Profiling and Bioimaging Applications of Small-Molecule Affinity-Based Probes Derived from DOT1L Inhibitors

DOT1L is the sole protein methyltransferase that methylates histone H3 on lysine 79 (H3K79), and is a promising drug target against cancers. Small-molecule inhibitors of DOT1L such as FED1 are potential anti-cancer agents and useful tools to investigate the biological roles of DOT1L in human diseases. FED1 showed excellent in vitro inhibitory activity against DOT1L, but its cellular effect was relatively poor. In this study, we designed and synthesized photo-reactive and "clickable" affinity-based probes (AfBPs), P1 and P2, which were cell-permeable and structural mimics of FED1. The binding and inhibitory effects of these two probes against DOT1L protein were extensively investigated in vitro and in live mammalian cells (in situ). The cellular uptake and sub-cellular localization properties of the probes were subsequently studied in live-cell imaging experiments, and our results revealed that, whereas both P1 and P2 readily entered mammalian cells, most of them were not able to reach the cell nucleus where functional DOT1L resides. This offers a plausible explanation for the poor cellular activity of FED1. Finally with P1/P2, large-scale cell-based proteome profiling, followed by quantitative LC-MS/MS, was carried out to identify potential cellular off-targets of FED1. Amongst the more than 100 candidate off-targets identified, NOP2 (a putative ribosomal RNA methyltransferase) was further confirmed to be likely a genuine off-target of FED1 by preliminary validation experiments including pull-down/Western blotting (PD/WB) and cellular thermal shift assay (CETSA). Minimalist "clickable" probes: Small-molecule probes P1 and P2 based on FED1 (a known DOT1L inhibitor) were developed and successfully used in experiments including live-cell imaging, in situ proteome profiling, and off-target identification (see scheme).

New S-adenosyl-L-methionine analogues: Synthesis and reactivity studies

Two new and complementary synthetic strategies for 5'-N-chloroethylamino- 5'-deoxyadenosines are presented. Additionally, the reaction kinetics of their conversion into aziridines under typical enzyme assay conditions is reported using time-resolved NMR spectroscopy. A stable photocaged derivative of 5'-N-chloroethylamino-5'-deoxyadenosine has also been synthesized, and its stability and activation in aqueous solution at physiological pH have been examined.

Synthesis of asymmetrically substituted cyclen-based ligands for the controlled sensitisation of lanthanides

A series of unsymmetrical cyclen-based ligands incorporating an antenna and a quencher have been prepared for the complexation of the visible- (Eu, Tb) and near IR-emitting (Nd, Yb) lanthanides. Eu and Tb were sensitised with coumarin 2, and Nd and Yb with rhodamine. Both antennae were paired with nucleoside (uridine and adenosine) quenchers. The interaction between the quencher and the antenna can be regulated by the addition of the complementary base or DNA to the complexes, resulting in changes in the lanthanide luminescence intensity and lifetime. The Royal Society of Chemistry.

Synthesis of an uncharged cAMP-analogue

3'-O,5'-N-(N-phenylsulfonyliminocarbonyl)-5'-amino-5'-deoxy adenosine, an uncharged cAMP-analogue was synthesized. This was accomplished by treatment of 5'amino-5'-deoxy-2',3'-O-isopropylidene adenosine with dimethyl N-phenylsulfonyldithiocarbamate. After removal of the isopropylidene protecting group and treatment of the intermediate with benzoyl chloride, cyclisation was carried out in DMF containing 10 equivalents of potassium tert-butoxide. Final deprotection of the adenine moiety was carried out with hydrazine hydrate.

The Base-sugar Conformation of Certain Derivatives of Adenosine

Base-sugar conformations of a range of adenosine derivatives have been confirmed by n.m.r. and c.d. measurements.The implications of the conformations for certain chemical properties, such as the formation of 5',8-cycloderivatives, are discussed.