Synthesis of new aminoacyl-adenylate analogs having an N-acyl phosphoramidate linkage
摘要:
New aminoacyl-adenylate analogs (aa-AMPNs), in which the oxygen atom of the mixed anhydride bond of aminoacyl-adenylates is replaced by an NH group, were synthesized by the reaction of an adenosine 5'-phosphoramidite derivative with appropriately protected amino acid amides. Among various reagents studied for activation of the 5'-phosphoramidite derivative, 5-(4-nitrophenyl)-1H-tetrazole was found to give N-acyl phosphoramidate derivatives in good yields. (C) 1998 Elsevier Science Ltd. All rights reserved.
with 1-hydroxy-7-azabenzotriazole to phosphotriesterintermediates; these intermediates reacted smoothly with phosphorylated compounds to give pyrophosphate derivatives. This new phosphorylation approach enabled a facile and rapid synthesis of 5′-adenylated DNA oligomers (A5′ppDNA) on resins using a silyl-type linker. Our new approach could be applied to the synthesis of a 2′-OMe-RNA oligomer containing
New aminoacyl-adenylate analogs (aa-AMPNs), in which the oxygen atom of the mixed anhydride bond of aminoacyl-adenylates is replaced by an NH group, were synthesized by the reaction of an adenosine 5'-phosphoramidite derivative with appropriately protected amino acid amides. Among various reagents studied for activation of the 5'-phosphoramidite derivative, 5-(4-nitrophenyl)-1H-tetrazole was found to give N-acyl phosphoramidate derivatives in good yields. (C) 1998 Elsevier Science Ltd. All rights reserved.