Amino acids in the synthesis of heterocyclic systems. The synthesis of 4??oxo??4H??pyrido [1, 2??a] pyridines and 4??oxo??4H??pyrido [1, 2??a] pyrimidines

J Smodiŝ, B Stanovnik, M Tiŝler

Index: Smodis, Janez; Stanovnik, Branko; Tisler, Miha Journal of Heterocyclic Chemistry, 1994 , vol. 31, # 1 p. 125 - 128

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Citation Number: 11

Abstract

Abstract The pyridine and quinoline derivatives 2, 3, and 6 with an activated methylene group atα-position in respect to the ring nitrogen atom were converted with 1, 8, or 9 into fused pyrido [1, 2-a] pyridine derivatives 4, 5, 7, and 10. In an analogous manner were the aminopyridines 16 and 17 transformed with thiazolone 9 into pyrido [1, 2-a] pyrimidine derivatives 20, 21, 25, and 26.