Synthesis of 6,7,8-Trisubstituted Purines via a Copper-Catalyzed Amidation Reaction
摘要:
We report herein an efficient method for the synthesis of 6,7,8-trisubstituted purines via a copper-catalyzed amidation reaction from easily accessible starting materials. Furthermore, the resulting 6-benzylsulfanyl-substituted purine derivatives may be readily oxidized for substitution by nucleophiles to give access to 6,7,8- trisubstituted purines for biological screening purposes.
Synthesis of 6,7,8-Trisubstituted Purines via a Copper-Catalyzed Amidation Reaction
摘要:
We report herein an efficient method for the synthesis of 6,7,8-trisubstituted purines via a copper-catalyzed amidation reaction from easily accessible starting materials. Furthermore, the resulting 6-benzylsulfanyl-substituted purine derivatives may be readily oxidized for substitution by nucleophiles to give access to 6,7,8- trisubstituted purines for biological screening purposes.
A series of 8-arylated purine derivatives bearing either an aniline or an alkyl amide at position 6 were found to inhibit glycogen synthase kinase-3, with good selectivity over ten kinases. Molecular modeling studies indicated that the most active compounds (8a and 8e), adopt a planar conformation, close to the shape of AMPPNP in the crystal structure of GSK-3. These compounds are stabilized by hydrophobic contacts between the 8-aromatic group and the protein adenine pocket and by electrostatic contacts. (C) 2010 Elsevier Masson SAS. All rights reserved.
Synthesis of 6,7,8-Trisubstituted Purines via a Copper-Catalyzed Amidation Reaction
作者:Nada Ibrahim、Michel Legraverend
DOI:10.1021/jo802248g
日期:2009.1.2
We report herein an efficient method for the synthesis of 6,7,8-trisubstituted purines via a copper-catalyzed amidation reaction from easily accessible starting materials. Furthermore, the resulting 6-benzylsulfanyl-substituted purine derivatives may be readily oxidized for substitution by nucleophiles to give access to 6,7,8- trisubstituted purines for biological screening purposes.