Ni‐Catalyzed Cross‐Coupling of 2‐Iodoglycals and 2‐Iodoribals with Grignard Reagents: A Route to 2‐
<i>C</i>
‐Glycosides and 2’‐
<i>C</i>
‐Nucleosides
作者:Peter Polák、Janine Cossy
DOI:10.1002/chem.202104311
日期:2022.5.11
2-C-glycals and ribals were then transformed into 2-C-2-deoxyglycosides, 2-C-diglycosides and 2'-C-2'-deoxynucleosides. The developed method was applied to the synthesis of a 2-chloroadenine 2'-deoxyribonucleoside - a structural analogue of cladribine (Mavenclad®, Leustatin®) and clofarabine (Clolar®, Evoltra®), two compounds used in the treatment of relapsing-remitting multiple sclerosis and hairy cell
Sodium Borohydride-Nickel Chloride-Methanol Catalytic System for Regioselective Reduction of Electron-Rich Conjugated Dienes and Reductive Cleavage of Allyl Esters Involving π-Allylnickel Intermediates
The regioslective reduction of electron-rich dienes to monoolefins and the reductivecleavage of allyl esters were fulfilled by employing a sodium borohydride-nickel chloride-methanol catalytic system with exceedingly simple manipulations and high functional group tolerability. Both of the reductive reactions may involve π-allylnickel intermediates generated from fresh nickel boride.