Photoreactions of 6-(1′-triazolyl)uracils. Synthesis of 7,8-disubstituted pyrrolo[2,3-d]pyrimidines and pyrimido[4,5-c]isoquinolines
摘要:
A series of 6-(1'-triazolyl)uracils 4a-f were subject to photolysis at 254 nm in acetonitrile. The C4', C5'-disubstituted triazoles 4a-c afforded pyrrolo[2,3-d]pyrimidines 5a-c whereas mono-substituted triazoles gave rise to polymeric mixtures. C5'-phenyl substituted adducts 4e,f generated pyrimido[4,5-c]isoquinolines 7 and 8 via a novel photorearrangement process.
Studies on uracils: an efficient method for the synthesis of novel 1-allyl-6-(1′,2′,3′-triazolyl) analogues of HEPT
作者:Pulak J. Bhuyan、Harsha N. Borah、Jagir S. Sandhu
DOI:10.1039/a906222j
日期:——
An efficient synthetic method for preparing novel 1-allyl-6-(1â²,2â²,3â²-triazolyl) analogues of HEPT, an anti-HIV reverse transcriptase inhibitor, is reported. The key step is based upon selective intermolecular cycloaddition of azide to acetylenes.
Photoreactions of 6-(1′-triazolyl)uracils. Synthesis of 7,8-disubstituted pyrrolo[2,3-d]pyrimidines and pyrimido[4,5-c]isoquinolines
作者:Eric D. Edstrom、Wei Yuan
DOI:10.1016/s0040-4039(00)92618-2
日期:1991.1
A series of 6-(1'-triazolyl)uracils 4a-f were subject to photolysis at 254 nm in acetonitrile. The C4', C5'-disubstituted triazoles 4a-c afforded pyrrolo[2,3-d]pyrimidines 5a-c whereas mono-substituted triazoles gave rise to polymeric mixtures. C5'-phenyl substituted adducts 4e,f generated pyrimido[4,5-c]isoquinolines 7 and 8 via a novel photorearrangement process.