Pd−Xantphos-Catalyzed Direct Arylation of Nucleosides
摘要:
Direct arylation of the exocyclic amino groups of nucleosides represents a simple approach to N-aryl nucleoside derivatives. To date, one limitation has been that only electron-deficient aryl bromides and triflates possessed adequate reactivity for efficient, direct N-arylation of nucleosides. We demonstrate herein that Pd-Xantphos catalytic systems lead to successful N-arylation of suitably protected 2'-deoxyadenosine and 2'-deoxyguanosine with a wide range of aryl bromides.
Pd−Xantphos-Catalyzed Direct Arylation of Nucleosides
作者:Felix N. Ngassa、Kyle A. DeKorver、Theothora S. Melistas、Edmund A.-H. Yeh、Mahesh K. Lakshman
DOI:10.1021/ol0619516
日期:2006.9.1
Direct arylation of the exocyclic amino groups of nucleosides represents a simple approach to N-aryl nucleoside derivatives. To date, one limitation has been that only electron-deficient aryl bromides and triflates possessed adequate reactivity for efficient, direct N-arylation of nucleosides. We demonstrate herein that Pd-Xantphos catalytic systems lead to successful N-arylation of suitably protected 2'-deoxyadenosine and 2'-deoxyguanosine with a wide range of aryl bromides.
Benzimidazopurine nucleosides from N<sup>6</sup>-aryl adenosine derivatives by PhI(OAc)<sub>2</sub>-mediated C–N bond formation, no metal needed
作者:Sakilam Satishkumar、Mahesh K. Lakshman
DOI:10.1039/c6cc07722f
日期:——
N6-Aryl 2′-deoxyadenosine and adenosine derivatives are readily cyclized to benzimidazopurine nucleoside analogues by simple exposure to PhI(OAc)2in 1,1,1,3,3,3-hexafluoro-2-propanol.