Novel synthetic routes to N-(2-amino-9H-purin-6-yl)-substituted amino acids
作者:Alexey Yu. Vigorov、Viktor P. Krasnov、Dmitry A. Gruzdev、Alisa A. Men'shikova、Alexander M. Demin、Galina L. Levit、Valery N. Charushin
DOI:10.1016/j.mencom.2013.12.011
日期:2014.1
Reaction of N-2-protected 2-amino-6-chloropurine with tert-butyl (S)-phenylalaninate, (R)- and (S)-valinates followed by deprotection affords 2-aminopurines bearing at 6-position the corresponding amino acid moieties, whose chiral centre is partially racemized.
Synthesis of enantiomers of N-(2-aminopurin-6-yl)amino acids
作者:V. P. Krasnov、A. Yu. Vigorov、D. A. Gruzdev、G. L. Levit、A. M. Demin、I. A. Nizova、A. A. Tumashov、L. Sh. Sadretdinova、E. B. Gorbunov、V. N. Charushin
DOI:10.1007/s11172-015-1125-x
日期:2015.9
Nonracemic N-(2-aminopurin-6-yl)-substituted aminoacids were synthesized by nucleophilic substitution of chlorine atom in 2-acetamido-6-chloropurine upon treatment with aminoacid tert-butyl esters and subsequent removal of protecting groups. Their enantiomeric composition was determined by HPLC on chiral stationary phases.