Synthesis and cardiotonic activity of pyrimido[5,4-<i>b</i>][1,4]oxazinones and 1,4-dioxino[2,3-<i>d</i>]pyrimidines
作者:Péter Mátyus、Nándor Makk、Anikó Tegdes、Judit Kosáry、Endre Kasztreiner、Benjamin Podányi、György Rabloczky、Mária Kiirthy
DOI:10.1002/jhet.5570270207
日期:1990.2
The new pyrimido[5,4-b][1,4]oxazinones 4a-c and 6a,b, 7a,c were obtained from 6-amino-2,3-dimethyl-4(3H)-pyrimidone (1) and 4-substituted pyrimido[5,4–6][1,4]oxazinones 5, 7a, respectively, while derivatives 8a-e of the novel ring system 1,4-dioxino[2,3-d]pyrimidine were prepared starting from 2b.
从6-氨基-2,3-二甲基-4(3 H)-嘧啶酮(1)获得了新的嘧啶并[5,4- b ] [1,4]恶嗪酮4a-c和6a,b,7a,c。和4-取代的嘧啶并[5,4-b] [1,4] oxazinones 5,图7A,分别,而新颖的环系统1,4-二恶英并[2,3-的衍生物8A-E d ]嘧啶开始制备从2b开始。