Diels–Alder Additions, Ene Reactions, and Condensations of 4-(Acylamino)-5-nitrosopyrimidines – Synthesis of 8-Substituted Guanines and of 6-Substituted Pteridinones
作者:Thomas Steinlin、Andrea Vasella
DOI:10.1002/hlca.200890048
日期:2008.3
condensation to provide 8-substituted guanines, or by a Diels–Alder cycloaddition, or an ene reaction, to provide 6-substituted pteridinones, depending on the nature of the acyl group and the reaction conditions. Experimental details are provided for the transformation of (acylamino)-nitrosopyrimidines to 8-substituted guanines, and the scope of the reaction is further demonstrated by transforming the trifluoro