A facile synthesis of pyrrolo [3, 2??d] pyrimidines from 6??azidouracils and ylide phosphoranes

WM Abdou, AFM Fahmy, AA Kamel

Index: Abdou, Wafaa M.; Fahmy, Amin F. M.; Kamel, Azza A. Heteroatom Chemistry, 2002 , vol. 13, # 4 p. 357 - 365

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Citation Number: 14

Abstract

Abstract A series of the title compounds, 9-deazaxanthines, was regioselectively prepared in reasonable yields as major products from the reactions of 6-azidouracils 1a, b with stabilized ester-2a, b or keto-2c ylide phosphoranes and a moderated phosphorus ylide 3, instead of the expected triazoles. Side products were also observed wherein pyrimido [5, 4-g] pteridine- 2, 4, 5, 7-tetrone (15) and other fused ring systems or acyclic-substituted uracil derivatives ...