A practical preparation of various 2, 3-dihydro-5H-oxazolo[3, 2-a]thieno[3, 2-d]-, [3, 4-d]-, and [2, 3-d]pyrimidin-5-one derivatives was developed starting from the corresponding aminothiopheneesters in two steps, and their chloro-substituted derivatives were prepared. These compounds were evaluated for gastric antisecretory activity in pylorus-ligated rats, compared to the anti-ulcer standard, cimetidine, and their structure-activity relationships are discussed.
一种实用的方法被开发用于合成多种2, 3-二氢-5H-
噁唑并
噻吩的[3, 2-a]、[3, 4-d]和[2, 3-d]
嘧啶-5-酮衍
生物,该过程从相应的
氨基
噻吩酯出发,仅需两步,并且其
氯取代衍
生物也被合成。这些化合物在幽门结扎大鼠中评估了其抗胃分泌活性,并与抗溃疡标准药物
西咪替丁进行了比较,同时讨论了它们的结构-活性关系。