A Novel Synthetic Routes to New 3-Substituted4-oxo-3,4,5,6,7,8-hexahydropyrido[, , ] thieno[, ]pyrimidine-7-carboxylic Acid Ethyl Ester Derivatives
作者:M. A. Ameen、E. Kh. Ahmed、F. F. Abdel-latif
DOI:10.1080/104265090507812
日期:2005.1.1
5-phenyl-oxadiazol-2-thione and triethylorthoformate to afford the open structures, 2 , 13 and 15 . These compounds were subjected to ensuing cyclization in one step or more yielding 3-substituted-5,6-dihydro-8H-4-oxopyrido[ [4] , [4] , [5] ]thieno[ [2] , [3] ]pyrimidine-7(6H)-carboxylic acid ethyl ester derivatives.
摘要 通过与氯甲酸乙酯、5-苯基-恶二唑-2-硫酮和原甲酸三乙酯反应得到开放结构2、13和15,研究了邻氨基酯1。这些化合物在一个或多个步骤中进行随后的环化,得到 3-取代的-5,6-二氢-8H-4-氧代吡啶并[[4]、[4]、[5]]噻吩并[[2]、[3] ]嘧啶-7(6H)-羧酸乙酯衍生物。