The Reactivity of Related 6-Amino- and 5,6-Diaminouracils Derived from 2-Amino-5-(phenoxymethyl)-2-oxazoline: Efficient Access to Bicyclic Pyrimidine Derivatives
作者:Jean Guillon、Stéphane Massip、Pascal Sonnet、Jean-Michel Léger、Jean-Jacques Bosc、Christa Müller、Christian Jarry
DOI:10.1055/s-2007-983748
日期:——
8-(Dimethylamino)-3-(2-hydroxy-3-phenoxypropyl)-xanthine has been obtained from 6-amino-1-(2-hydroxy-3-phenoxypropyl)uracil by an azodicarboxylate Michael-type addition involving a reactive diene. 6-Amino-1-(2-hydroxy-3-phenoxy-propyl)uracil was easily prepared from racemic 2-amino-5-(phenoxymethyl)-2-oxazoline. Moreover, these chemical investigations also led to the identification of a racemic 7-aminooxazolo[5,4-d]pyrimidin-5(6H)-one, obtained by the condensation reaction of the phosgeniminium chloride, Viehe’s salt, with 5,6-diamino-1-(2-hydroxy-3-phenoxypropyl)uracil.
8-(二甲基氨基)-3-(2-羟基-3-苯氧基丙基)-黄嘌呤是由 6-氨基-1-(2-羟基-3-苯氧基丙基)脲嘧啶通过偶氮二甲酸酯迈克尔型加成反应(涉及一个活性二烯)而得到的。6- 氨基-1-(2-羟基-3-苯氧基丙基)尿嘧啶很容易从外消旋 2-氨基-5-(苯氧基甲基)-2-噁唑啉中制备出来。此外,这些化学研究还发现了一种外消旋 7-氨基恶唑并[5,4-d]嘧啶-5(6H)-酮,它是由光气基氯化铵(维赫盐)与 5,6-二氨基-1-(2-羟基-3-苯氧基丙基)脲嘧啶发生缩合反应而得到的。