Preparation of triazolo [1, 5-c] pyrimidines as potential antiasthma agents

…, R Paul, JS Baker, JA Brockman, MT Du…

Index: Medwid, Jeffrey B.; Paul, Rolf; Baker, Jannie S.; Brockman, John A.; Du, Mila T.; et al. Journal of Medicinal Chemistry, 1990 , vol. 33, # 4 p. 1230 - 1241

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Citation Number: 129

Abstract

With the use of the human basophil histamine release assay, 5-aryl-2-amino [1, 2, 4] triazolo [1, 5-c] pyrimidines were found to be active as mediator release inhibitors. These compounds were prepared by reacting arylamidines with sodium ethyl formylacetate or with ethyl propiolate to give pyrimidinones. Treatment with phosphorus oxychloride gave a chloropyrimidme, which was converted to a hydrazinopyrimidine with hydrazine. ...