Synthesis of Some New Pyrido[3′,2′:4,5]thieno[3,2-<i>d</i>]pyrimidin-4(3<i>H</i>)-Ones and Pyrido[3′,2′: 4,5]thieno[2,3-e]-1,2,4-triazolo[1,5-c]pyrimidine Derivatives
作者:Yuh-Wen Ho
DOI:10.1002/jccs.200100172
日期:2001.12
carbonylmethylene-pyrido[3',2':4,5]]thieno[3,2-d]pyrimidin-4(3H)-one derivatives 13a-d. 3-N-Substituted-pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-ones 15a,b, 16a,b and 18a,b were also obtained by cyclization of carbohydrazide 14 with different reagents under a variety of conditions. On the other hand, cyclization of 3-amino-4-imino-pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-ones 21a,b with appropriate
2,3-二取代-吡啶并[3',2':4,5]噻吩并[3,2-d]嘧啶--4(3H)-ones 8a-8c, 9a-9c 经吡啶并[3]处理得到',2':4,5]噻吩并[3,2-d][1,3]oxazin-4(3H)-one 衍生物 3, 3-二乙酰氨基-噻吩并[2,3-b]吡啶衍生物 5 和 3 -乙氧基亚甲基氨基噻吩并[2,3-b]吡啶衍生物7a分别与适当的胺。化合物 8b、9b 与适当的 α-氯羰基化合物缩合得到相应的 3-取代羰基亚甲基-吡啶并[3',2':4,5]]噻吩并[3,2-d]嘧啶-4(3H)-酮衍生物13a-d。3-N-Substituted-pyrido[3',2':4,5]thieno[3,2-d]pyrimidin-4(3H)-ones 15a,b, 16a,b 和 18a,b 也通过环化得到碳酰肼 14 与不同试剂在各种条件下的关系。另一方面,3-氨基-4-亚氨基-吡啶并[3'