作者:Giuliana Biagi、Irene Giorgi、Oreste Livi、Clementina Manera、Valerio Scartoni
DOI:10.1002/jhet.5570360514
日期:1999.9
Some new 1,2,3-triazolo[4,5-e]-1,2,4-triazolo[3,4-c]pyrimidmes were prepared starting from the corresponding 1,2,3-triazolo[4,5-d]pyrimidines via the formation of the 1,2,4-triazole ring. Thus suitable hydrazino derivatives 6 were condensed with triethyl orthoformate, triethyl orthoacetate and triethyl orthobenzoate to give the expected tricyclic derivatives 7, 8 and 9. Intramolecular cyclization of
一些新的1,2,3-三唑并[4,5- ë ] -1,2,4-三唑并[3,4 - c ^ ] pyrimidmes制备来自相应的1,2,3-三唑并开始并[4,5- d ]嘧啶通过形成1,2,4-三唑环。因此,合适的肼衍生物6用原甲酸三乙酯缩合,原乙酸三乙酯和三乙基orthobenzoate,得到预期三环衍生物7,8和9。乙氧基羰基肼基衍生物10的分子内环化得到在3位带有羟基的三环化合物11。该v在结合测定中针对A 1和A 2A腺苷受体测试了-三唑-三唑并嘧啶衍生物,但它们没有显示任何受体亲和力。