under hydrogenolytic conditions to N-H triazoles 7. Saponification and cyclization with either polyphosphoric acid or phosphoric oxide in methanesulphonic acid leads to the novel 9-oxo-1H,9H-benzopyrano[2,3-d]-v-triazole system 9, members of which have potential as antiasthmatic agents.
1-苄基-5-
氯- v -三
唑-4-羧酸乙酯(3)经历与容易
苯酚离子的卤原子的亲核置换,得到aryloxytriazolecarboxylates 4其中debenzylate氢解的条件下,以NH三唑7。皂化和环化与
甲磺酸通向新颖-9-氧代1或者多
磷酸或
磷酸氧化物ħ,9 ħ -苯并
吡喃并[2,3- d ] - v -三唑系统9,其成员有可能作为抗哮喘药。