申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0322691A1
公开(公告)日:1989-07-05
1-Acyl-2-pyrazoline derivatives represented by the formula
where R¹ denotes a hydrogen atom, pyridyl group, pyrazinyl group, alkyl group, aryl group, or alkoxy group; and R², R³, and R⁴ independently denote a hydrogen atom, furyl group, pyridyl group, alkyl group, or aryl group, are produced by cyclizing by heating an acylhydrazone derivative represented by the formula
where R¹, R², R³, and R⁴ are defined as above, to produce compounds having useful anti-cerebral edema activity.
1-酰基-2-吡唑啉衍生物,由式表示
式中 R¹表示氢原子、吡啶基、吡嗪基、烷基、芳基或烷氧基;R²、R³和R⁴独立地表示氢原子、糠基、吡啶基、烷基或芳基,通过加热环化由式表示的酰基腙衍生物而制得。
其中 R¹、R²、R³ 和 R⁴ 的定义同上,从而制得具有有效抗脑水肿活性的化合物。