Polycyclic N-Heterocyclic Compounds. Part 62: Reaction of N-(Quinazolin-4-yl)amidine Derivatives with Hydroxylamine Hydrochloride and Anti-platelet Aggregation Activity of the Products
作者:Kensuke Okuda、Ying-Xue Zhang、Hiromi Ohtomo、Takashi Hirota、Kenji Sasaki
DOI:10.1248/cpb.58.369
日期:——
The reactions of N-(5,6,7,8-tetrahydroquinazolin-4-yl)amidines and their amide oximes with hydroxylamine hydrochloride gave abnormal cyclization products via a ring cleavage of pyrimidine component accompanied with a ring closure of 1,2,4-oxadiazole to give N-[2-([1,2,4]oxadiazol-5-yl)cyclohexen-1-yl]formamide oximes. Similarly, N-(quinazolin-4-yl)amidines reacted with hydroxylamine hydrochloride gave
N-(5,6,7,8-四氢喹唑啉-4-基)am及其酰胺肟与羟胺盐酸盐的反应通过嘧啶组分的环裂解以及1,2,4的闭环而产生异常的环化产物-恶二唑得到N- [2-([1,2,4]恶二唑-5-基)环己烯-1-基]甲酰胺肟。类似地,N-(喹唑啉-4-基)am与盐酸羟胺反应得到相同的结果。还描述了在体外对血小板聚集的抑制活性的评估,以显示一种衍生物具有有效的活性。