- 作者: Ahmed A. Geies
- 作者服務機構: Chemistry Department, Faculty of Science, Assiut University
- 中文摘要: 6-Aminouracil and 6-aminothiouracil (1a,b) were reacted with benzylidenemalononitrile 2a to afford the pyrido[2,3-d]pyrimidines 4a,b. On the other hand, the reaction of 1a,b with benzylidene ethyl cyanoacetata 2b result in a mixture of 5a,b and/or 6a ,b respectively. Pyrido[2,3-d]thiazolo[1,2-b]pyrimidines 8a-c were synthesized from the reaction of 4b with .alpha.-halo compounds to give the intermediate derivatives 7a-c followed by cyclization using 70% H/sub 2/SO/sub 4/.
- 英文摘要: --
- 中文關鍵字: Pyridopyrimidines; Thiazolopyrimidine; Triazolopyridopyrimidine; Aminopyrimidine
- 英文關鍵字: 啶嘧啶;三氮嘧啶;三氮啶嘧啶;胺嘧啶