methanolic ammonia under drastic conditions. Condensation of 2 or 29 with 2‐oxo‐2‐(thiophen‐2‐yl)acetaldehyde oxime (11) gave the 6‐(2‐thienyl)‐pteridine‐4‐one (12) and 5‐chloro‐2‐(2‐thienyl)pyrido[3,4‐b]pyrazine (31), respectively. All compounds were evaluated for their antiviral activity against the replication of HIV‐1 and HIV‐2 in MT‐4. Some of the synthesized compounds were tested against the bacterial
4,5-二
氨基嘧啶2和3与2,2ʹ-联
吡啶(4)的缩合分别得到6,7-双(2-
吡啶基)蝶啶-2-一类似物5和7。类似地,6,7-双(2-
吡啶基)luamzine衍
生物13,15,17,和23,从5,6-二
氨基-2- thiopyrimidines反应合成13,14,和22与4,分别,而缩合4,5,6-三
氨基嘧啶(25)或5,6-二
氨基类似物26与4分别提供了4-
氨基蝶啶类似物27和28。得到4-
硫代类似物的新蝶啶和lumazines的
硫杂化6,8,16,和24。用
甲醇氨水处理6和8分别得到4-异is呤类似物9和10。用取代的
苯甲酰氯将15烷基化,得到18和19,它们环化为
噻唑并蝶啶衍
生物20和21分别用多
磷酸处理。或者,在剧烈条件下,用
甲醇氨处理24,制得27。2或29与2-氧代-2-(
噻吩-2-基)
乙醛肟(11)的缩合得到6-(2-
噻吩基)-
哌啶-4-基(12)和5-
氯-2-(- 2-
噻吩基]
吡啶并[3