Synthesis of 9-oxo-8,9-dihydrothiazolo[5,4-f]quinazoline-2-carbonitrile (1) or 6-oxo-6,7-dihydrothiazolo[4,5-h]quinazoline-2-carbonitrile (2) was reinvestigated with the ambition of varying the position of the thiazole ring linked to the quinazolin-4-one moiety, in order to synthesize two novel linear tricyclic 8-oxo-7,8-dihydrothiazolo[4,5-g]quinazoline-2-carbonitrile (3) and 8-oxo-7,8-dihydrothiazolo[5
9-氧代8,9-二氢
噻唑[5,4- f ]
喹唑啉-2-腈(1)或6-氧代6,7-二氢
噻唑[4,5 - h ]
喹唑啉-2-腈(2)的合成)进行了重新研究,目的是改变与
喹唑啉4-one部分相连的
噻唑环的位置,以便合成两个新颖的线性
三环式8-氧代-7,8-二氢
噻唑并[4,5- g ]
喹唑啉- 2-甲腈(3)和8-氧代7,8-二氢
噻唑并[5,4 - g ]
喹唑啉-2-甲腈(4)。本文描述的途径为获得有效的
生物活性
杂环化合物文库提供了各种替代和转化途径。