3-Propionylsalicyclic acid derivatives and process for the preparation of the same
申请人:Yamamoto Chemical Industrial Company, Limited
公开号:EP0105484A2
公开(公告)日:1984-04-18
This invention relates to derivatives of 3-propionyl. salicylic acid represented by the formula (1)
wherein R represents a hydrogen atom, a lower alkyl group or a group
(wherein R1 and R2 represent a lower alkyl group or R1 and R2, when taken together with the nitrogen atom to which they are attached, may form a heterocyclic ring with or without an intervening hetero atom, and n is an integer of 1 to 4.), and X represents a hydrogen atom or a halogen atom, R being the group
when X is a hydrogen atom.
This invention also relates to processes for preparing the same.
本发明涉及 3-丙酰基水杨酸的衍生物,由式(1)表示
其中 R 代表氢原子、低级烷基或基团
(其中 R1 和 R2 代表低级烷基或 R1 和 R2 与它们所连接的氮原子一起可形成一个杂环,中间有或没有杂原子,n 为 1 至 4 的整数。),X 代表氢原子或卤素原子,R 为基团
当 X 为氢原子时。
本发明还涉及制备上述物质的工艺。