New [f]??fused xanthines: Synthesis of 1, 3??dipropyl??1H, 3H??pyrazino, pyrido, pyrimido and pyrrolo [2, 1??f] purine??2, 4??diones

…, MRD Giudice, A Borioni, C Mustazza

Index: Gatta; Del Giudice; Borioni; Mustazza Journal of Heterocyclic Chemistry, 1994 , vol. 31, # 1 p. 81 - 86

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Citation Number: 13

Abstract

Abstract Synthesis of 1, 3-dipropyl-1H, 3H-pyrazino, pyrido, pyrimido and pyrrolo [2, 1-f] purine-2, 4-diones, starting from 5, 6-diamino-1, 3-dipropylpyrimidine-2, 4-dione 1 and 6- chloro-1, 3-dipropylpyrimidine-2, 4-dione 14 is described. A new synthetic approach to 1, 3- dipropyl-1H, 3H-pyrido (or pyrazino)[1′, 2′-1, 2] pyrimido [4, 5-d] pyrimidine-2, 4, 5-triones 19 e, f, h has been also developed.